JPH05285690A - Composite material for welding and its production - Google Patents
Composite material for welding and its productionInfo
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- JPH05285690A JPH05285690A JP9541392A JP9541392A JPH05285690A JP H05285690 A JPH05285690 A JP H05285690A JP 9541392 A JP9541392 A JP 9541392A JP 9541392 A JP9541392 A JP 9541392A JP H05285690 A JPH05285690 A JP H05285690A
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、アルミニウムおよびア
ルミニウム合金の表面に耐摩耗性を改善するための表面
硬化層を形成する肉盛溶接法に使用する溶接用複合材お
よびその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding composite material used in a build-up welding method for forming a surface hardened layer for improving wear resistance on the surfaces of aluminum and aluminum alloys, and a method for producing the same.
【０００２】[0002]
【従来の技術】アルミニウムおよびアルミニウム合金は
軽量、耐食性、熱伝導性が良好なことより、自動車部
品、航空機部品等に広く使用されている。しかし、鉄鋼
材料に比べて耐摩耗性が劣るため、硬質アルマイト加
工、クロムメッキ処理等が施されたり、あるいはアルミ
ニウムの表面にミリオーダーの厚膜表面硬化層を形成す
るための表面溶融合金化法（電子ビーム、レーザービー
ム、プラズマ粉体アーク等）が実用化されている。2. Description of the Related Art Aluminum and aluminum alloys are widely used in automobile parts, aircraft parts, etc. because of their light weight, good corrosion resistance and good thermal conductivity. However, since it is inferior in wear resistance to steel materials, it is subjected to hard alumite processing, chrome plating treatment, etc., or a surface melt alloying method for forming a thick film hardened layer of millimeter order on the surface of aluminum. (Electron beam, laser beam, plasma powder arc, etc.) have been put to practical use.
【０００３】さらに、今日、簡便で汎用性に富みイニシ
ャルコストの低いＴＩＧ，ＭＩＧ肉盛溶接法に適用する
ため、Ａｌ−Ｃｕ，Ａｌ−Ｓｉ，Ａｌ−Ｎｉ，Ａｌ−Ｆ
ｅ合金棒をフープ材（溶加材）として用いたオーバーレ
イ肉盛コーティングが実用化されているが、溶接時の連
続自動化の面で不可欠なフープ材の供給の面で難点があ
った。すなわち、上記合金棒は最大５０cm程度の長さし
かなく、しかも脆い（合金化して脆い金属間化合物にな
る）という欠点があった。また、上記合金では比抵抗が
高いので、溶接電流を安定させることも困難であった。Further, in order to apply to the TIG and MIG overlay welding methods which are simple and versatile and have a low initial cost, Al-Cu, Al-Si, Al-Ni and Al-F are used today.
Although overlay overlay coating using an e-alloy rod as a hoop material (filler material) has been put into practical use, it has a problem in terms of supply of the hoop material, which is essential in terms of continuous automation during welding. That is, the alloy rod has a drawback that it has a maximum length of about 50 cm and is brittle (alloying into a brittle intermetallic compound). Further, since the above-mentioned alloy has a high specific resistance, it was difficult to stabilize the welding current.
【０００４】そこで、近時、図３に示すように、Ｃｕ，
Ｎｉ，Ｆｅ等の金属パイプからなる被覆材２０にアルミ
ニウムの芯材２１を挿入して連続的に被覆加工した複合
ワイヤーが開発されている。このものは、溶接電流が安
定化し、また非常に軟らかくリールに連続的に巻回でき
る等の利点がある。Therefore, recently, as shown in FIG. 3, Cu,
A composite wire has been developed in which an aluminum core material 21 is inserted into a coating material 20 made of a metal pipe of Ni, Fe or the like and continuously coated. This has the advantages that the welding current is stabilized, and that it is very soft and can be continuously wound on a reel.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
複合ワイヤーを用いて、ＴＩＧ，ＭＩＧ溶接法により肉
盛加工を行い、表面硬化層をつくっても、表面硬化層の
硬度が不均一であり、またブローホールや肉盛部の割れ
等が生じるという欠点があった。本発明の目的は、上述
の技術的課題を解決し、表面硬化層の硬度の不均一、ブ
ローホール、肉盛部の割れ等の発生を防止した溶接用複
合材およびその製造方法を提供することである。However, even if a hardened surface layer is formed by overlaying a conventional composite wire by TIG or MIG welding method, the hardness of the hardened surface layer is not uniform, Further, there is a defect that blowholes and build-up portions are cracked. An object of the present invention is to solve the above technical problems and to provide a welding composite material in which the occurrence of nonuniform hardness of a surface hardened layer, blowholes, cracks in a buildup portion, and the like, and a manufacturing method thereof. Is.
【０００６】[0006]
【課題を解決するための手段および作用】上記の目的を
達成するための本発明の溶接用複合材は、Ｍｇ，Ｓｉお
よびＣｕを含むアルミニウム合金を芯材とし、この芯材
を、Ｎｉ，Ｆｅ，Ｓｉ，Ｔｉ，Ｃｒ，ＭｇおよびＭｎよ
りなる群から選ばれる少なくとも１種を総量に対して０
〜１０重量％の割合で含む銅または銅合金にて面積被覆
率８〜５０％で被覆したものである。The welding composite material of the present invention for achieving the above object has an aluminum alloy containing Mg, Si and Cu as a core material, and the core material is made of Ni, Fe. , Si, Ti, Cr, Mg and Mn, at least one selected from the group is 0 based on the total amount.
The area coverage is 8 to 50% with copper or a copper alloy containing 10 to 10% by weight.
【０００７】本発明の他の溶接用複合材は、Ｍｇ，Ｓｉ
およびＣｕを含むアルミニウム合金を芯材とし、この芯
材を、無酸素銅または無酸素銅合金にて面積被覆率８〜
５０％で被覆したものである。本発明のさらに他の溶接
用複合材は、Ｍｇ，ＳｉおよびＣｕを含むアルミニウム
合金を芯材とし、この芯材を、Ｎｉ合金（Ｎｉ：９９重
量％以上）、Ｆｅ合金（Ｆｅ：９９重量％以上）、Ｔｉ
合金（Ｔｉ：９９重量％以上）およびＦｅ−Ｃｒ−Ｎｉ
合金（Ｃｒ：２５重量％以下）よりなる群から選ばれる
少なくとも１種（換言すれば、少なくとも１層）にて面
積被覆率８〜５０％で被覆したものである。Another welding composite material of the present invention is Mg, Si.
And an aluminum alloy containing Cu as a core material, and the area coverage of the core material with oxygen-free copper or oxygen-free copper alloy
It is coated with 50%. Still another welding composite material of the present invention has an aluminum alloy containing Mg, Si and Cu as a core material, and the core material is made of a Ni alloy (Ni: 99% by weight or more) and an Fe alloy (Fe: 99% by weight). Above), Ti
Alloy (Ti: 99% by weight or more) and Fe-Cr-Ni
The area coverage is 8 to 50% with at least one kind (in other words, at least one layer) selected from the group consisting of alloys (Cr: 25% by weight or less).
【０００８】前記アルミニウム合金は、Ｍｇ：１．５〜
５．０重量％、Ｓｉ：１．０〜５．０重量％およびＣ
ｕ：１．０〜５．０重量％を１種以上含むアルミニウム
合金である。前記無酸素銅または無酸素銅合金は、酸素
量が１０ｐｐｍ以下、Ｐｂ：１０ｐｐｍ以下およびＰ：
３ｐｐｍ以下を含有する。The aluminum alloy is Mg: 1.5-
5.0 wt%, Si: 1.0-5.0 wt% and C
u: An aluminum alloy containing one or more of 1.0 to 5.0% by weight. The oxygen-free copper or oxygen-free copper alloy has an oxygen content of 10 ppm or less, Pb: 10 ppm or less, and P:
Contains 3 ppm or less.
【０００９】前記Ｎｉ合金は、Ｃ：０．１重量％以下、
Ｓｉ：０．３重量％以下、Ｍｎ：０．２重量％以下、
Ｐ：０．０２重量％以下、Ｓ：０．０１重量％以下を含
有し、残部９９．０重量％以上がＮｉである。前記Ｆｅ
合金は、Ｃ：０．２重量％以下、Ｓｉ：０．３重量％以
下、Ｍｎ：０．２重量％以下、Ｐ：０．０２重量％以
下、Ｓ：０．０１重量％以下を含有し、残部９９．０重
量％以上がＦｅである。The Ni alloy is C: 0.1% by weight or less,
Si: 0.3 wt% or less, Mn: 0.2 wt% or less,
P: 0.02% by weight or less, S: 0.01% by weight or less, and the balance 99.0% by weight or more is Ni. Fe
The alloy contains C: 0.2 wt% or less, Si: 0.3 wt% or less, Mn: 0.2 wt% or less, P: 0.02 wt% or less, S: 0.01 wt% or less. The balance is 99.0% by weight or more of Fe.
【００１０】前記Ｔｉ合金は、Ｃ：０．１重量％以下、
Ｓｉ：０．３重量％以下、Ｍｎ：０．２重量％以下、
Ｐ：０．０２重量％以下、Ｓ：０．０１重量％以下を含
有し、残部９９．０重量％以上がＴｉである。前記Ｆｅ
−Ｃｒ−Ｎｉ合金は、Ｃｒ：１０〜２５重量％以下、Ｎ
ｉ：１０重量％以下、Ｃ：０．１重量％以下、Ｓｉ：
０．３重量％以下、Ｍｎ：０．２重量％以下、Ｐ：０．
０２重量％以下、Ｓ：０．０１重量％以下を含有し、残
部がＦｅである。The Ti alloy contains C: 0.1% by weight or less,
Si: 0.3 wt% or less, Mn: 0.2 wt% or less,
P: 0.02% by weight or less, S: 0.01% by weight or less, and the balance 99.0% by weight or more is Ti. Fe
-Cr-Ni alloy, Cr: 10 to 25 wt% or less, N
i: 10% by weight or less, C: 0.1% by weight or less, Si:
0.3 wt% or less, Mn: 0.2 wt% or less, P: 0.
02% by weight or less, S: 0.01% by weight or less, and the balance being Fe.
【００１１】また、本発明の溶接用複合材の製造方法
は、線径６．０mm以上の前記アルミニウム合金芯材を、
前記したいずれかの被覆材にて連続的に被覆しながら、
被覆材のみを超硬アロイ材質でダイス半角α＝１５〜３
０度のダイスを用いて、減面率３０％以上の加工を加え
て嵌合線とした後、この嵌合線をダイス半角α＝４〜１
５度の伸線ダイスで７０％以上の伸線加工を行った後
に、焼鈍熱処理を行うことを特徴とする。In the method for manufacturing a composite material for welding according to the present invention, the aluminum alloy core material having a wire diameter of 6.0 mm or more is used.
While continuously coating with any of the above coating materials,
Die half-angle α = 15 to 3 with cemented carbide material for the coating material only
After using a 0 degree die to process the surface reduction rate of 30% or more to form a fitting line, the fitting line is made into a die half angle α = 4 to 1
It is characterized in that annealing heat treatment is performed after 70% or more wire drawing is performed with a 5 degree wire drawing die.
【００１２】前記焼鈍熱処理は、２００〜４００℃の温
度範囲で１分〜２４時間行われる。前記焼鈍熱処理後、
減面率５０％以上の冷間伸線を少なくとも１回以上繰り
返してもよい。本発明者は、アルミニウム芯材について
研究を重ねた結果、肉盛部のブローホールや割れの防止
には、アルミニウム中にＭｇ，ＳｉおよびＣｕを添加す
ることが有効であり、とくに溶接割れ感受性が小さくな
ることがわかった。また、フープ材としたときに芯材で
あるアルミニウム合金の強度向上にも有効であることが
わかった。The annealing heat treatment is performed in the temperature range of 200 to 400 ° C. for 1 minute to 24 hours. After the annealing heat treatment,
Cold drawing with a surface reduction rate of 50% or more may be repeated at least once. As a result of repeated studies on the aluminum core material, the present inventor has found that it is effective to add Mg, Si and Cu to the aluminum in order to prevent blowholes and cracks in the build-up portion, and particularly, the weld crack sensitivity is high. It turned out to be smaller. It was also found that the hoop material is effective for improving the strength of the aluminum alloy which is the core material.
【００１３】かかるアルミニウム合金の芯材は、前記Ｍ
ｇ，ＳｉおよびＣｕのうち少なくとも１種と、Ｃｒ，Ｍ
ｎと、通常の不純物と、残部Ａｌとからなる。Ｍｇは
１．５％未満では強度不足となり、逆に５％を超え、と
くに１０％を超えると、きわめて伸線加工性が悪くな
る。同様に、ＳｉやＣｕも１．０％未満では強度不足に
なり、５％を超えると伸線加工性が劣るようになる。な
お、強度を必要としない場合はアルミニウム合金でなく
ても、純度９９．９％以上のアルミニウムでもよいが、
溶接割れの防止に対しては、Ｍｇ，ＳｉおよびＣｕのう
ち少なくとも１種を添加するのが望ましい。The core material of the aluminum alloy is M
At least one of g, Si and Cu, and Cr, M
n, normal impurities, and the balance Al. If the Mg content is less than 1.5%, the strength becomes insufficient, and conversely, if it exceeds 5%, and particularly if it exceeds 10%, the wire drawability becomes extremely poor. Similarly, if Si or Cu is less than 1.0%, the strength becomes insufficient, and if it exceeds 5%, the wire drawability becomes poor. If strength is not required, aluminum having a purity of 99.9% or more may be used instead of the aluminum alloy.
To prevent weld cracking, it is desirable to add at least one of Mg, Si and Cu.
【００１４】次に、本発明者がアルミニウム合金の芯材
を被覆材料について研究を重ねた。すなわち、ＴＩＧ，
ＭＩＧ溶接法においては、溶接用複合材を溶かして種々
の金属間化合物（合金）をアルミニウム母材中に均一に
分散させることにより、用途に応じた各種の硬度のもの
を得ることができる。例えば母材がアルミニウム（ＡＣ
２Ｂ、硬度Ｈｖ＝６０〜８０）であるとき、要求される
硬度をＨｖ＝２００〜８００とすると、被覆材料として
種々の材料組成が使用できる。すなわち、一般に、Ｈｖ
＝２００〜３００程度ではＣｕ−Ａｌ合金、Ａｌ−Ｓｉ
合金、Ｈｖ＝４００〜８００程度ではＡｌ−Ｔｉ合金、
Ａｌ−Ｎｉ合金、Ａｌ−Ｆｅ合金、Ａｌ−Ｃｒ合金等を
使用するのが適当である。また、二元合金でなくても、
三元、四元合金とすることにより、硬度を任意に変えら
れることもわかった。これをより詳細に説明すると、以
下のとおりである。 (1) Ａｌ−Ｃｕ系合金の場合 被覆する銅または銅合金の面積被覆率は８〜５０％とす
るのが好ましい。面積被覆率が８％未満、特に５％未満
になると、目的とするＡｌ−Ｃｕからなる金属間化合物
の分散量が少ないためにＨｖ＝１００程度しかならず、
目的とする硬度が得られない。また、面積被覆率が５０
％を超え、特に６０％を超えると、銅リッチの層に変わ
り、母材のＡｌとのマッチング性が悪くなり、割れが発
生しやすい。面積被覆比率は、より好ましくは１０〜３
０％である。なお、面積被覆比率は、複合材の断面を見
たとき、（被覆層面積／全面積）×１００（％）で表さ
れる。Next, the present inventor conducted extensive research on coating materials for aluminum alloy core materials. That is, TIG,
In the MIG welding method, various intermetallic compounds (alloys) are uniformly dispersed in the aluminum base material by melting the welding composite material to obtain materials having various hardness according to the application. For example, if the base material is aluminum (AC
2B and hardness Hv = 60 to 80), if the required hardness is Hv = 200 to 800, various material compositions can be used as the coating material. That is, in general, Hv
= About 200 to 300, Cu-Al alloy, Al-Si
Alloy, Al-Ti alloy at Hv = 400 to 800,
It is suitable to use an Al-Ni alloy, an Al-Fe alloy, an Al-Cr alloy, or the like. Also, even if it is not a binary alloy,
It was also found that the hardness can be arbitrarily changed by using a ternary or quaternary alloy. This will be described in more detail as follows. (1) In the case of Al-Cu-based alloy The area coverage of copper or copper alloy to be coated is preferably 8 to 50%. If the area coverage is less than 8%, particularly less than 5%, the target amount of the intermetallic compound made of Al—Cu is small, and thus only Hv = 100 or so.
The desired hardness cannot be obtained. The area coverage is 50
%, Particularly above 60%, the layer changes to a copper-rich layer, the matching property with Al of the base material deteriorates, and cracks easily occur. The area coverage ratio is more preferably 10 to 3
It is 0%. The area coverage ratio is expressed by (covering layer area / total area) × 100 (%) when the cross section of the composite material is viewed.
【００１５】また、Ｃｕ中に、Ｎｉ，Ｆｅ，Ｓｉ，Ｔ
ｉ，Ｃｒ，ＭｇおよびＭｎの少なくとも１種を添加する
ことにより、Ａｌ−Ｃｕの金属間化合物以外のさらに硬
度の高い金属間化合物をも分散させることができる。こ
のような硬度の高い金属間化合物としては、例えばＮｉ
Ａｌ3 ，ＦｅＡｌ3 ，ＳｉＡｌ3 ，ＴｉＡｌ3 ，ＣｒＡ
ｌ7 ，Ａｌ3 Ｍｇ2 ，ＭｎＡｌ3 などがあげられる。上
記元素の少なくとも１種の添加量を総量で１０％以下と
したのは、特に１５％以上になると、Ｃｕと合金を形成
して加工性がきわめて悪い材料となるからである。より
好ましい配合量は総量に対して約１〜５％である。In addition, Cu, Ni, Fe, Si, T
By adding at least one of i, Cr, Mg and Mn, it is possible to disperse an intermetallic compound having a higher hardness in addition to the Al—Cu intermetallic compound. As such an intermetallic compound having high hardness, for example, Ni
Al 3 , FeAl 3 , SiAl 3 , TiAl 3 , CrA
l 7 , Al 3 Mg 2 , MnAl 3 and the like. The total amount of addition of at least one of the above elements is set to 10% or less, because if it is 15% or more, it forms an alloy with Cu and becomes a material having extremely poor workability. A more preferable blending amount is about 1 to 5% based on the total amount.
【００１６】さらに、ブローホール、溶接割れを防止す
るためには、被覆する銅または銅合金をいずれも無酸素
型にし、かつＰｂ，Ｐを低くすることが重要である。す
なわち、酸素１０ｐｐｍ以下、Ｐｂ：１０ｐｐｍ以下お
よびＰ：３ｐｐｍ以下であるのが好ましく、とくに酸素
は１０ｐｐｍを超えると著しくブローホールが発生す
る。 (2) Ａｌ−Ｎｉ，Ａｌ−Ｔｉ，Ａｌ−Ｆｅ，Ａｌ−Ｃｒ
系合金の場合 非常に硬い層を得るには、Ａｌ−Ｃｕ系以外に、Ａｌ−
Ｔｉ，Ａｌ−Ｎｉ，Ａｌ−ＦｅまたはＡｌ−Ｃｒの金属
間化合物を多く分散させることが重要であることは知ら
れているが、Ａｌ母材との整合性（マッチング）を考慮
すると、硬すぎると割れ等が発生するので、Ｈｖ＝８０
０以下となるように調整することが必要である。そのた
め、種々研究を重ねた結果、Ａｌ合金の芯材を被覆する
Ｎｉ合金，Ｔｉ合金，Ｆｅ合金、Ｃｒ合金（ただし、Ｃ
ｒ合金はＦｅ−Ｃｒ−Ｎｉのステンレス系として）の面
積被覆率は８〜５０％の範囲が好ましいことを見出し
た。面積被覆率が８％未満、特に５％未満では硬化の効
果が少なく、逆に５０％を超え、特に６０％を超えると
Ｈｖ＝８００以上となり、割れ等が発生する。より好ま
しい面積被覆率は１０〜３０％である。Further, in order to prevent blowholes and weld cracks, it is important that the coating copper or copper alloy is oxygen-free and Pb and P are low. That is, it is preferable that the oxygen content is 10 ppm or less, Pb: 10 ppm or less, and P: 3 ppm or less. Particularly, when oxygen exceeds 10 ppm, blowholes remarkably occur. (2) Al-Ni, Al-Ti, Al-Fe, Al-Cr
In the case of a system alloy, in order to obtain a very hard layer, in addition to the Al-Cu system, Al-
It is known that it is important to disperse a large amount of an intermetallic compound of Ti, Al-Ni, Al-Fe or Al-Cr, but it is too hard considering the matching with the Al base material (matching). Hv = 80 because cracks will occur.
It is necessary to adjust the value to be 0 or less. Therefore, as a result of various studies, a Ni alloy, a Ti alloy, a Fe alloy, and a Cr alloy (however, C
It has been found that the area coverage of the r alloy (as a Fe-Cr-Ni stainless steel system) is preferably in the range of 8 to 50%. If the area coverage is less than 8%, especially less than 5%, the curing effect is small, and conversely, if it exceeds 50%, especially more than 60%, Hv = 800 or more, and cracks or the like occur. A more preferable area coverage is 10 to 30%.
【００１７】また、溶接部のブローホール、割れ等を防
止するためには被覆材の成分も考慮する必要がある。と
くに、リンと硫黄は、Ｐ：０．０２重量％以下、Ｓ：
０．０１重量％以下であるのが、ブローホール、割れ等
を防止するうえで好ましい。また、加工性の面で炭素量
が多すぎると、伸線加工が困難になるため、炭素はＮｉ
系，Ｔｉ系，Ｆｅ−Ｃｒ−Ｎｉ系では０．１重量％以
下、Ｆｅ系では０．２重量％以下であるのが好ましい。Further, in order to prevent blowholes, cracks and the like in the welded portion, it is necessary to consider the composition of the coating material. Particularly, phosphorus and sulfur are P: 0.02 wt% or less and S:
It is preferably 0.01% by weight or less in order to prevent blowholes, cracks and the like. Further, if the amount of carbon is too large in terms of workability, wire drawing becomes difficult, so carbon is Ni.
It is preferable that the content is 0.1 wt% or less for the Fe, Cr, and Fe-Cr-Ni systems, and 0.2 wt% or less for the Fe system.
【００１８】また、脱酸性を上げるために、添加元素と
してＳｉ，Ｍｎを加えることも望ましく、Ｓｉは０．３
重量％以下、Ｍｎは０．２重量％以下であるのが適当で
ある。本発明のような複合クラッド材の場合、被覆材と
芯材とは、ある程度金属学的に結合（密着）しているの
が好ましく、それらの間に隙間があると、その隙間内の
空気が溶解時にブローホールになる。種々検討の結果、
そのような隙間の発生は、ある程度太いサイズで嵌合す
る際の嵌合方法とそれ以降の伸線方法および焼鈍条件に
負うところが大きいことがわかった。It is also desirable to add Si and Mn as additional elements in order to increase deoxidation, and Si is 0.3
It is appropriate that the content of Mn is less than 0.2% by weight and the content of Mn is less than 0.2% by weight. In the case of the composite clad material like the present invention, it is preferable that the covering material and the core material are metallurgically bonded (adhered) to some extent, and if there is a gap between them, the air in the gap is Becomes blowholes when melted. As a result of various studies,
It was found that the occurrence of such a gap depends largely on the fitting method when fitting with a relatively large size, and the wire drawing method and annealing conditions thereafter.
【００１９】まず、一般に使用される溶接フープ材は径
が１．０〜１．６mmの線材であることから、本発明にお
けるアルミニウム合金の芯材は線径が６．０mm以上であ
るのがよく、これに上記(1) 、(2) で記載の被覆材を連
続的に供給しながら、ダイス半角α＝１５〜３０度のダ
イスを通すと、被覆材が伸びてＡｌ合金の芯材上ですべ
り抵抗が発生し、密着を増す。これに対して、ダイス半
角α＝１５度未満、とくに１０度未満では、すべりの度
合いが少なく、充分に密着しなくなる。また、ダイス半
角α＝１５〜３０度のダイスを用いることにより、所定
の面積被覆率を得ることができる。First, since the generally used welding hoop material is a wire having a diameter of 1.0 to 1.6 mm, the aluminum alloy core material of the present invention preferably has a wire diameter of 6.0 mm or more. While continuously supplying the coating material described in the above (1) and (2) to this, when the die half angle α = 15 to 30 degrees is passed through the die, the coating material is stretched to form on the Al alloy core material. Slip resistance occurs and adhesion is increased. On the other hand, if the die half-angle α is less than 15 degrees, particularly less than 10 degrees, the degree of slippage is small and sufficient adhesion cannot be obtained. Further, a predetermined area coverage can be obtained by using a die having a die half angle α = 15 to 30 degrees.
【００２０】さらに、得られた嵌合線を伸線する伸線加
工においても、密着をより満足なものにするために、ダ
イス半角α＝４〜１５度の伸線ダイスで７０％以上を減
面した後に、２００〜４００℃で焼鈍を行うのが好まし
い。ダイス半角が４度未満であるとダイスの摩耗が大き
くなり、逆にダイス半角が１５度を超えると被覆層がず
れて、タグレ状になる可能性がある。また、焼鈍温度が
２００℃未満、とくに１５０℃未満では、相互拡散反応
が得られず、逆に４００℃を超え、とくに４５０℃を超
えた温度で焼鈍を長時間行うと、脆い金属間化合物がで
き、線が容易に折損してフープ材とならないからであ
る。また、焼鈍時間は１分〜２４時間であるのが好まし
く、焼鈍が１分未満では相互拡散の効果が得られず、ま
た２４時間を超えてもコストが高くなると共にそれに見
合うだけの性能向上が得られない。Further, even in the wire drawing process for drawing the obtained fitting wire, in order to make the contact more satisfactory, the wire drawing die with a half-angle α of 4 to 15 degrees reduces 70% or more. After facing, it is preferable to perform annealing at 200 to 400 ° C. If the die half-angle is less than 4 degrees, the wear of the die increases, and conversely, if the die half-angle exceeds 15 degrees, the coating layer may be displaced to form a tie shape. Further, if the annealing temperature is less than 200 ° C., particularly less than 150 ° C., mutual diffusion reaction cannot be obtained, and conversely, if annealing is performed for a long time at a temperature exceeding 400 ° C., especially exceeding 450 ° C., brittle intermetallic compounds are formed. This is because the wire can be easily broken and does not become a hoop material. Further, the annealing time is preferably from 1 minute to 24 hours, and if the annealing is less than 1 minute, the effect of mutual diffusion cannot be obtained, and even if it exceeds 24 hours, the cost becomes high and the performance improvement corresponding to it is improved. I can't get it.
【００２１】ついで、さらに５０％以上の減面を加える
と、完全に芯材と被覆材との隙間をなくすことができ
る。Then, by further reducing the surface area by 50% or more, the gap between the core material and the covering material can be completely eliminated.
【００２２】[0022]
【実施例】図１および図２は本発明の溶接用複合材の製
造装置を示している。図２は被覆材がパイプの場合であ
り、図３はテープ状の被覆材をテープの側縁同士を突き
合わせてＴＩＧ溶接してパイプ状にして芯材を被覆する
場合である。図１に示すように、アルミニウム合金の芯
材ｂは芯材供給部５から連続的に繰り出され、ストレー
ナー６で真っ直ぐにされながら清浄装置７を通り、成形
装置２へと導入される。一方、パイプａはパイプ供給部
１から連続的に繰り出され、成形装置２へと導入され
る。そして、成形装置２において、パイプａの軸方向に
沿った突き合わせ部からパイプａ内に芯線ｂを連続的に
押し込み、該突き合わせ部を塞ぎ、ついで所定の面積率
を得る半角α＝１５〜３０度のダイス８を経て芯材ｂに
パイプａが嵌合された嵌合材ｄとなって巻取り部９で巻
き取られる。1 and 2 show an apparatus for producing a welding composite material according to the present invention. FIG. 2 shows a case where the covering material is a pipe, and FIG. 3 shows a case where the tape-shaped covering material is abutted with the side edges of the tape and TIG-welded to form a pipe shape to cover the core material. As shown in FIG. 1, a core material b of aluminum alloy is continuously fed from a core material supply part 5, straightened by a strainer 6, passed through a cleaning device 7, and introduced into a molding device 2. On the other hand, the pipe a is continuously fed from the pipe supply unit 1 and introduced into the molding device 2. Then, in the molding apparatus 2, the core wire b is continuously pushed into the pipe a from the abutting portion along the axial direction of the pipe a to close the abutting portion, and then a predetermined area ratio is obtained. Half angle α = 15 to 30 degrees After passing through the die 8, the core a becomes a fitting material d in which the pipe a is fitted and is wound by the winding section 9.
【００２３】また、図２に示す装置においては、前記と
同様にアルミニウム合金の芯材ｂは芯材供給部５からス
トレーナー６および清浄装置７を経て成形装置１２へと
導入される。一方、テープｃは供給部１０から繰り出さ
れ、清浄装置１１を経て成形装置１２へ導入される。成
形装置１２において、テープｃはパイプ形成装置１４に
て芯材ｂを被覆するようにパイプ状に成形され、ＴＩＧ
溶接装置１３にてテープｃの側縁同士が突き合わせ溶接
される。成形装置１２の出口側には半角α＝１５〜３０
度のダイス８が取付けられ、ついで得られた嵌合材ｄ′
は巻取り部９で巻き取られる。In the apparatus shown in FIG. 2, the aluminum alloy core material b is introduced from the core material supply section 5 through the strainer 6 and the cleaning apparatus 7 into the molding apparatus 12 as described above. On the other hand, the tape c is unwound from the supply section 10 and introduced into the molding apparatus 12 via the cleaning apparatus 11. In the forming device 12, the tape c is formed into a pipe shape by the pipe forming device 14 so as to cover the core material b.
The side edges of the tape c are butt-welded by the welding device 13. Half angle α = 15 to 30 on the outlet side of the molding device 12.
The die 8 is attached and the fitting material d'obtained is then obtained.
Is taken up by the take-up section 9.
【００２４】図１または図２に示す製造装置にて溶接用
複合材を製造するために、芯材ｂとして径８．５mmのア
ルミニウム合金を準備した。また、被覆材であるパイプ
ａとして、外径１９mm、肉厚０．７〜３mmのものを準備
した。一方、テープｃを用いる場合は、厚さ０．５〜
０．７mmで幅４０〜４５mmのものを準備した。ダイス８
は所定の面積被覆率を得るために径が９．０〜１２．３
mmのものを使用した。In order to manufacture the composite material for welding with the manufacturing apparatus shown in FIG. 1 or 2, an aluminum alloy having a diameter of 8.5 mm was prepared as the core material b. As the pipe a, which is a covering material, a pipe having an outer diameter of 19 mm and a wall thickness of 0.7 to 3 mm was prepared. On the other hand, when the tape c is used, the thickness is 0.5 to
One having a width of 0.7 mm and a width of 40 to 45 mm was prepared. Dice 8
Has a diameter of 9.0 to 12.3 to obtain a predetermined area coverage.
The thing of mm was used.
【００２５】次に、得られた嵌合線ｄ，ｄ′（外径９．
０〜１２．３mm）を外径４．０〜４．６mmまで冷間加工
した。そのときの冷間加工には、ダイス半角α＝４ ３
１５度を用いた。その後、３００℃で１時間程度焼鈍を
行い、さらに外径１．２〜１．６mmまで冷間加工を行っ
て複合材を得た。かかる条件にて、表１〜表４に示す組
成を有する溶接用複合材Ｎｏ．１〜４３を作製した。つ
いで、これらの各複合材を用いて、アルミニウム母材
（ＡＣ２Ｂ，１０mm×１００mm×１００mm、硬度Ｈｖ＝
８０）にＴＩＧ肉盛溶接を行った。溶接電源にはサイリ
スタ制御ＴＩＧ溶接機を使用し、溶接電流１００〜１５
０Ａ、溶接スピード１００mm／分、複合材供給速度５０
０mm／分とし、シールドガスはＡｒまたはＨｅを用い
た。また、母材は約１００℃に予熱した。Next, the fitting lines d, d '( outer diameter 9.
0 to 12.3 mm) was cold worked to an outer diameter of 4.0 to 4.6 mm . For cold working at that time, the die half-angle α = 4 3
15 degrees were used. After that, annealing was performed at 300 ° C. for about 1 hour, and further cold working was performed to an outer diameter of 1.2 to 1.6 mm to obtain a composite material. Under these conditions, the welding composite material Nos. Having the compositions shown in Tables 1 to 4 were used. 1-43 were produced. Then, using each of these composite materials, an aluminum base material (AC2B, 10 mm × 100 mm × 100 mm, hardness Hv =
80) was subjected to TIG overlay welding. A thyristor-controlled TIG welding machine is used as the welding power source, and the welding current is 100 to 15
0A, welding speed 100mm / min, composite material supply speed 50
The shield gas was 0 mm / min, and Ar or He was used as the shield gas. The base material was preheated to about 100 ° C.
【００２６】[0026]
【表１】 [Table 1]
【００２７】[0027]
【表２】 [Table 2]
【００２８】[0028]
【表３】 [Table 3]
【００２９】[0029]
【表４】 [Table 4]
【００３０】それらの各複合材の評価試験結果を表５〜
表７に示す。表に示す各評価項目は以下のようにして行
った。肉盛部の硬度は、肉盛溶接後、マイクロビッカー
ス硬度計を用いて測定した。また、ブローホール欠陥は
断面検査で判断し、下記の基準で評価した。 ○ ─ 使用上の問題とならない大きさか、あるいはそ
れ以下 × ─ 肉眼で判別しうるほどの大きいもの ビード部の割れは外観検査にて判断し、下記の基準で評
価した。Table 5 shows the evaluation test results of each of the composite materials.
It shows in Table 7. Each evaluation item shown in the table was performed as follows. The hardness of the overlay portion was measured using a micro Vickers hardness meter after overlay welding. Further, blowhole defects were judged by cross-section inspection and evaluated according to the following criteria. ○ ─ A size that does not pose a problem in use or less × ─ Large enough to be visually discernible Cracks in the bead were judged by visual inspection and evaluated according to the following criteria.
【００３１】○ ─ 割れがない × ─ 割れがある まとめの評価は上記硬度、ブローホール、割れの結果に
基づき、下記の基準で行った。 ○ ─ すべて問題がない △ ─ 使い方によっても可能性ある。◯: No cracking ×: Cracking A comprehensive evaluation was made based on the above hardness, blowhole and cracking results, according to the following criteria. ○ ─ No problem at all △ ─ It may be possible depending on usage.
【００３２】× ─ 何らかの問題がある また、総合結果は上記評価項目の結果に基づき、下記の
基準で判断した。 ○ ─ すべて問題がない × ─ 何らかの問題があるX: Some problem was found. The overall result was judged according to the following criteria based on the result of the above evaluation items. ○ ─ No problem × ─ Some problem
【００３３】[0033]
【表５】 [Table 5]
【００３４】[0034]
【表６】 [Table 6]
【００３５】[0035]
【表７】 [Table 7]
【００３６】表５〜７の結果から、本発明の溶接用複合
材Ｎｏ．２，４〜１２，１７〜１９，２４〜２５，３
０，３３および３５〜３９は、使用したアルミニウム母
材の硬度Ｈｖ＝８０に比べて硬度が高く、とくにＡｌ−
Ｃｕ系ではＨｖ＝２００〜５００にも向上しており、し
かもブローホール、割れ等が見られないことがわかる。
また、Ａｌ−Ｎｉ，Ａｌ−Ｔｉ，Ａｌ−Ｆｅ，Ａｌ−Ｃ
ｒ系ではＨｖ＝３００〜８００であり、約１mm程度の肉
厚加工を行うことにより、すぐれた耐摩耗表面が得られ
た。From the results shown in Tables 5 to 7, the welding composite material No. 1 of the present invention was used. 2,4-12,17-19,24-25,3
0, 33 and 35 to 39 have higher hardness than the hardness Hv = 80 of the aluminum base material used, and particularly Al-
It can be seen that the Cu system has improved to Hv = 200 to 500, and that no blowholes, cracks, etc. are observed.
In addition, Al-Ni, Al-Ti, Al-Fe, Al-C
In the r system, Hv = 300 to 800, and an excellent wear-resistant surface was obtained by performing wall thickness processing of about 1 mm.
【００３７】なお、ＴＩＧ溶接に代えて、溶接電極を１
５０Ａ程度でＭＩＧ溶接を行っても、ＴＩＧ溶接の場合
とほぼ同等の結果が得られた。In place of TIG welding, the welding electrode is
Even when MIG welding was performed at about 50 A, almost the same results as in the case of TIG welding were obtained.
【００３８】[0038]
【発明の効果】本発明の溶接用複合材は、アルミニウム
やアルミニウム合金の表面の耐摩耗性を改善するために
表面硬化層を形成するための肉盛溶接法に適用でき、表
面硬化層の硬度の不均一、ブローホール、肉盛部の割れ
等の発生が防止される。従って、本発明の溶接用複合材
を用いるＭＩＧ，ＴＩＧ溶接法による表面硬化処理は、
自動車、自動二輪車等のエンジンピストン周辺、アルミ
ダイキャスト、金型鋳造材の局部硬化、アルミニウム金
型、その他アルミニウム製品の耐摩耗性向上が要求され
る船舶部品等のほか、鉄鋼材料の構造物、真空チャンバ
ー等の多くの分野に好適に使用しうるものである。INDUSTRIAL APPLICABILITY The welding composite material of the present invention can be applied to the overlay welding method for forming a surface-hardened layer in order to improve the wear resistance of the surface of aluminum or aluminum alloy, and the hardness of the surface-hardened layer. Of unevenness, blowholes, and cracks in the build-up portion are prevented. Therefore, the surface hardening treatment by the MIG or TIG welding method using the welding composite material of the present invention is
Around engine pistons for automobiles and motorcycles, aluminum die casting, local hardening of die casting materials, aluminum dies, ship parts that require improved wear resistance of other aluminum products, structures of steel materials, It can be suitably used in many fields such as a vacuum chamber.
【図１】本発明の溶接用複合材の製造装置を示す説明図
である。FIG. 1 is an explanatory view showing an apparatus for manufacturing a welding composite material according to the present invention.
【図２】本発明の溶接用複合材の他の製造装置を示す説
明図である。FIG. 2 is an explanatory view showing another manufacturing apparatus of the composite material for welding of the present invention.
【図３】金属パイプ中にＡｌ線を挿入した溶接用複合ワ
イヤーの断面図である。FIG. 3 is a cross-sectional view of a welding composite wire in which an Al wire is inserted into a metal pipe.
ａ パイプ ｂ 芯材 ｃ テープ ｄ 嵌合材 ｄ′ 嵌合材 ２ 成形装置 ８ ダイス a pipe b core material c tape d fitting material d'fitting material 2 molding device 8 die
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２３Ｋ 35/40 ３３０ 7362−4Ｅ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B23K 35/40 330 330 7362-4E
Claims (12)
合金を芯材とし、この芯材を、Ｎｉ，Ｆｅ，Ｓｉ，Ｔ
ｉ，Ｃｒ，ＭｇおよびＭｎよりなる群から選ばれる少な
くとも１種を総量に対して０〜１０重量％の割合で含む
銅または銅合金にて面積被覆率８〜５０％で被覆するこ
とを特徴とする溶接用複合材。1. A core material is an aluminum alloy containing Mg, Si and Cu, and the core material is made of Ni, Fe, Si and T.
and an area coverage of 8 to 50% with copper or a copper alloy containing at least one selected from the group consisting of i, Cr, Mg and Mn in a proportion of 0 to 10% by weight based on the total amount. Welding composite material.
合金を芯材とし、この芯材を、無酸素銅または無酸素銅
合金にて面積被覆率８〜５０％で被覆することを特徴と
する溶接用複合材。2. Welding, characterized in that an aluminum alloy containing Mg, Si and Cu is used as a core material, and the core material is coated with oxygen-free copper or an oxygen-free copper alloy at an area coverage of 8 to 50%. For composites.
１０ｐｐｍ以下、Ｐｂ：１０ｐｐｍ以下およびＰ：３ｐ
ｐｍ以下を含む請求項２記載の溶接用複合材。3. The oxygen-free copper or oxygen-free copper alloy has oxygen of 10 ppm or less, Pb: 10 ppm or less, and P: 3 p.
The composite material for welding according to claim 2, containing pm or less.
合金を芯材とし、この芯材を、Ｎｉ合金（Ｎｉ：９９重
量％以上）、Ｆｅ合金（Ｆｅ：９９重量％以上）、Ｔｉ
合金（Ｔｉ：９９重量％以上）およびＦｅ−Ｃｒ−Ｎｉ
合金（Ｃｒ：２５重量％以下）よりなる群から選ばれる
少なくとも１種にて面積被覆率８〜５０％で被覆するこ
とを特徴とする溶接用複合材。4. An aluminum alloy containing Mg, Si and Cu is used as a core material, and the core material is made of Ni alloy (Ni: 99% by weight or more), Fe alloy (Fe: 99% by weight or more), Ti.
Alloy (Ti: 99% by weight or more) and Fe-Cr-Ni
A composite material for welding, which is coated with at least one selected from the group consisting of alloys (Cr: 25% by weight or less) at an area coverage of 8 to 50%.
よびＣｕの元素のうち少なくとも１種は、Ｍｇ：１．５
〜５．０重量％、Ｓｉ：１．０〜５．０重量％およびＣ
ｕ：１．０〜５．０重量％である請求項１、２または４
記載の溶接用複合材。5. At least one of the elements of Mg, Si and Cu contained in the aluminum alloy is Mg: 1.5.
~ 5.0 wt%, Si: 1.0-5.0 wt% and C
u: 1.0 to 5.0% by weight.
The described composite material for welding.
Ｓｉ：０．３重量％以下、Ｍｎ：０．２重量％以下、
Ｐ：０．０２重量％以下およびＳ：０．０１重量％以下
を含有し、残部９９．０重量％以上がＮｉである請求項
４記載の溶接用複合材。6. The Ni alloy comprises C: 0.1% by weight or less,
Si: 0.3 wt% or less, Mn: 0.2 wt% or less,
The composite material for welding according to claim 4, which contains P: 0.02% by weight or less and S: 0.01% by weight or less, and the balance 99.0% by weight or more is Ni.
Ｓｉ：０．３重量％以下、Ｍｎ：０．２重量％以下、
Ｐ：０．０２重量％以下およびＳ：０．０１重量％以下
を含有し、残部９９．０重量％以上がＦｅである請求項
４記載の溶接用複合材。7. The Fe alloy comprises C: 0.2 wt% or less,
Si: 0.3 wt% or less, Mn: 0.2 wt% or less,
The composite material for welding according to claim 4, which contains P: 0.02% by weight or less and S: 0.01% by weight or less, and the balance 99.0% by weight or more is Fe.
Ｓｉ：０．３重量％以下、Ｍｎ：０．２重量％以下、
Ｐ：０．０２重量％以下およびＳ：０．０１重量％以下
を含有し、残部９９．０重量％以上がＴｉである請求項
４記載の溶接用複合材。8. The Ti alloy comprises C: 0.1% by weight or less,
Si: 0.3 wt% or less, Mn: 0.2 wt% or less,
The composite material for welding according to claim 4, which contains P: 0.02% by weight or less and S: 0.01% by weight or less, and the balance 99.0% by weight or more is Ti.
〜２５重量％以下、Ｎｉ：１０重量％以下、Ｃ：０．１
重量％以下、Ｓｉ：０．３重量％以下、Ｍｎ：０．２重
量％以下、Ｐ：０．０２重量％以下およびＳ：０．０１
重量％以下を含有し、残部がＦｅである請求項４記載の
溶接用複合材。9. The Fe—Cr—Ni alloy is Cr: 10.
~ 25 wt% or less, Ni: 10 wt% or less, C: 0.1
Wt% or less, Si: 0.3 wt% or less, Mn: 0.2 wt% or less, P: 0.02 wt% or less and S: 0.01
The welding composite material according to claim 4, wherein the composite material contains less than or equal to wt% and the balance is Fe.
mm以上のアルミニウム合金芯材を、銅もしくは銅合金、
無酸素銅もしくは無酸素銅合金、Ｎｉ合金（Ｎｉ：９９
重量％以上）、Ｆｅ合金（Ｆｅ：９９重量％以上）、Ｔ
ｉ合金（Ｔｉ：９９重量％以上）またはＦｅ−Ｃｒ−Ｎ
ｉ合金（Ｃｒ：２５重量％以下）からなる被覆材で被覆
し、ダイス半角α＝１５〜３０度のダイスを用いて減面
率３０％以上の加工を加えて嵌合線とした後、この嵌合
線をダイス半角α＝４〜１５度の伸線ダイスで７０％以
上の伸線加工を行い、ついで焼鈍熱処理を行うことを特
徴とする溶接用複合材の製造方法。10. A wire diameter of 6.0 containing Mg, Si and Cu.
mm or more aluminum alloy core material, copper or copper alloy,
Oxygen-free copper or oxygen-free copper alloy, Ni alloy (Ni: 99
Wt% or more), Fe alloy (Fe: 99 wt% or more), T
i alloy (Ti: 99% by weight or more) or Fe-Cr-N
After being coated with a coating material made of an i alloy (Cr: 25% by weight or less), a die having a half angle α of 15 to 30 degrees is used to form a fitting line after processing with a surface reduction rate of 30% or more. A method for manufacturing a composite material for welding, wherein the fitting wire is drawn by 70% or more with a wire drawing die having a die half angle α of 4 to 15 degrees, and then an annealing heat treatment is performed.
温度範囲で１分〜２４時間行われる請求項１０記載の溶
接用複合材の製造方法。11. The method for producing a welding composite material according to claim 10, wherein the annealing heat treatment is performed in a temperature range of 200 to 400 ° C. for 1 minute to 24 hours.
冷間伸線を少なくとも１回以上繰り返す請求項１０記載
の溶接用複合材の製造方法。12. The method for manufacturing a composite material for welding according to claim 10, wherein after the annealing heat treatment, cold drawing with a surface reduction rate of 50% or more is repeated at least once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9541392A JPH05285690A (en) | 1992-04-15 | 1992-04-15 | Composite material for welding and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9541392A JPH05285690A (en) | 1992-04-15 | 1992-04-15 | Composite material for welding and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05285690A true JPH05285690A (en) | 1993-11-02 |
Family
ID=14136998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9541392A Pending JPH05285690A (en) | 1992-04-15 | 1992-04-15 | Composite material for welding and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05285690A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006003191A1 (en) * | 2006-01-24 | 2007-11-15 | Airbus Deutschland Gmbh | Additional material in particular for improving the quality of a joining seam formed during the thermal joining of two metallic components |
| JP2011031264A (en) * | 2009-07-30 | 2011-02-17 | Fujikura Ltd | Method for manufacturing copper-coated aluminum wire |
| JP2012087368A (en) * | 2010-10-20 | 2012-05-10 | Hitachi Cable Ltd | Clad material excellent in workability and method for manufacturing the same |
| CN114045476A (en) * | 2021-11-11 | 2022-02-15 | 重庆大学 | Copper-magnesium composite material and preparation method and application thereof |
| WO2022190942A1 (en) * | 2021-03-12 | 2022-09-15 | 国立研究開発法人物質・材料研究機構 | Copper-coated aluminum wire material and production method therefor |
-
1992
- 1992-04-15 JP JP9541392A patent/JPH05285690A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006003191A1 (en) * | 2006-01-24 | 2007-11-15 | Airbus Deutschland Gmbh | Additional material in particular for improving the quality of a joining seam formed during the thermal joining of two metallic components |
| DE102006003191B4 (en) * | 2006-01-24 | 2011-03-17 | Airbus Operations Gmbh | Additional material for the thermal joining of two metallic components and a corresponding use of a filler material |
| JP2011031264A (en) * | 2009-07-30 | 2011-02-17 | Fujikura Ltd | Method for manufacturing copper-coated aluminum wire |
| JP2012087368A (en) * | 2010-10-20 | 2012-05-10 | Hitachi Cable Ltd | Clad material excellent in workability and method for manufacturing the same |
| WO2022190942A1 (en) * | 2021-03-12 | 2022-09-15 | 国立研究開発法人物質・材料研究機構 | Copper-coated aluminum wire material and production method therefor |
| CN114045476A (en) * | 2021-11-11 | 2022-02-15 | 重庆大学 | Copper-magnesium composite material and preparation method and application thereof |
| CN114045476B (en) * | 2021-11-11 | 2023-10-20 | 重庆大学 | Copper-magnesium composite material and preparation method and application thereof |
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