JPH0625363B2 - Extruded A-1 group composite vitret and method for producing the same - Google Patents
Extruded A-1 group composite vitret and method for producing the sameInfo
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- JPH0625363B2 JPH0625363B2 JP2659087A JP2659087A JPH0625363B2 JP H0625363 B2 JPH0625363 B2 JP H0625363B2 JP 2659087 A JP2659087 A JP 2659087A JP 2659087 A JP2659087 A JP 2659087A JP H0625363 B2 JPH0625363 B2 JP H0625363B2
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- based composite
- composite
- alloy
- base
- billet
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、Al基複合押出材を押出成形するための押出加
工用複合ビレットおよびその製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a composite billet for extrusion processing for extrusion-molding an Al-based composite extrusion material, and a method for producing the same.
（従来の技術） 軽量金属であるAlまたはAl合金（以下、単にAl合金とい
うときは、Alも含むものとする。）と、軽量で高強度、
高弾性率で、耐熱性にもすぐれた SiC，Si3 N4，Al2 O3
などのセラミックスウィスカまたはセラミックス粒子を
強化材として複合化した複合材料は、高比強度、高比弾
性率、高疲労強度で耐熱性にもすぐれ、しかも繊維強化
プラスチックに比べてすぐれた耐熱性を示す。このた
め、軽量化、高性能化が強く志向されている宇宙航空
機，自動車などの輸送機器分野での構造部材やエンジン
部品用素材、およびオフィスオートメーション，精密，
産業機械等の可動，駆動部品、並びにスポーツ用品用の
素材として注目を集めている。(Prior Art) Al or Al alloy which is a lightweight metal (hereinafter, simply referred to as Al alloy also includes Al), lightweight and high strength,
SiC, Si 3 N 4 , Al 2 O 3 with high elastic modulus and excellent heat resistance
Composite materials such as ceramics whiskers or composites of ceramic particles as a reinforcing material have high specific strength, high specific elastic modulus, high fatigue strength, excellent heat resistance, and superior heat resistance to fiber-reinforced plastics. . For this reason, structural materials and materials for engine parts in the field of transportation equipment such as space aircraft and automobiles, which are strongly aimed at weight reduction and high performance, and office automation, precision,
It is attracting attention as a material for movable and drive parts of industrial machines and sports equipment.
押出加工用複合ビレットとしては、従来粉末冶金法およ
び溶湯鍛造法により製造した、全長が複合材料で形成さ
れたビレットが知られている。BACKGROUND ART As a composite billet for extrusion processing, a billet which is manufactured by a powder metallurgy method and a molten metal forging method and whose entire length is formed of a composite material is known.
粉末冶金法は、例えば特開昭60−121242号公報に記載の
ようにセラミックスウィスカまたはセラミックス粒子な
どの強化材粉末とAl合金のマトリクス金属粉末とを混合
してカプセルに充填した後、加熱脱ガス処理を施して密
封し、熱間静水圧加圧（以下、ＨＩＰという。）によっ
て粉末同士を焼結一体化して固化成形する方法である。
また、混合粉末の焼結一体化による固化成形には、真空
ホットプレスも利用される。The powder metallurgy method is, for example, as described in JP-A-60-121242, a reinforcing material powder such as ceramic whiskers or ceramic particles and a matrix metal powder of Al alloy are mixed and filled in a capsule, and then heated degassing is performed. It is a method of performing treatment, sealing, and sintering and integrating powders by hot isostatic pressing (hereinafter, referred to as HIP) to solidify and mold.
Further, vacuum hot pressing is also used for solidification molding by sintering and integration of the mixed powder.
溶湯鍛造法は、特開昭61−137624号公報に記載されたよ
うに、ウィスカを圧縮成形してプリフォームをつくり、
このプリフォーム内部にAl合金溶湯を含浸させて複合ビ
レットを製造する方法である。The molten metal forging method, as described in JP-A-61-137624, compression-molds a whisker to form a preform,
This is a method of manufacturing a composite billet by impregnating molten Al alloy into the inside of this preform.
上記方法で製造されたAl基複合ビレットは、静水圧押
出、直接押出又は間接押出により、押出加工に供され、
得られる押出材は所期の構造材や部品素材として利用さ
れる。The Al-based composite billet produced by the above method is subjected to extrusion processing by hydrostatic extrusion, direct extrusion or indirect extrusion,
The extruded material obtained is used as a desired structural material or material for parts.
（発明が解決しようとする問題点） しかしながら、マトリクス金属とセラミックス強化材と
がビレットの全体にわたって複合化された第６図に示す
複合ビレットを使用して押出加工した場合、第７図に示
すように、押出方向後端部に押しカス部11が残り、押出
製品としての歩留りが低下するという問題がある。特
に、複合材料はスクラップの再生が技術的に困難なた
め、現在のところ再利用できないのが実情であり、歩留
りの低下が材料コストの上昇に直結するので、歩留りの
向上に対する要望が強い。(Problems to be Solved by the Invention) However, when extrusion is performed using the composite billet shown in FIG. 6 in which the matrix metal and the ceramics reinforcing material are compounded over the entire billet, as shown in FIG. In addition, there is a problem that the pushing residue 11 remains at the rear end in the extrusion direction, and the yield of the extruded product is reduced. In particular, since it is technically difficult to recycle scraps in composite materials, it is the fact that they cannot be reused at present, and a decrease in yield directly leads to an increase in material cost. Therefore, there is a strong demand for improvement in yield.
本発明はかかる問題点に鑑みなされたもので、Al基複合
押出材の押出加工歩留りの向上を図ることができるAl基
複合ビレットとその好適な製造方法を提供することを目
的とする。The present invention has been made in view of the above problems, and an object of the present invention is to provide an Al-based composite billet capable of improving the extrusion processing yield of an Al-based composite extruded material and a suitable manufacturing method thereof.
（問題点を解決するための手段） 上記目的を達成するために提供された本発明のAl基複合
ビレットは、Al又はAl合金のマトリクス金属とセラミッ
クス強化材とで形成されたAl基複合部1 の少なくとも押
出方向後端側に、固相線温度が前記マトリクス金属のそ
れ以上であるAl又はAl合金からなる押カス形成用基部2
が連成されていることを発明の構成とするものである。(Means for Solving the Problems) The Al-based composite billet of the present invention provided to achieve the above-mentioned object is an Al-based composite part 1 formed of a matrix metal of Al or an Al alloy and a ceramics reinforcing material. At least on the rear end side in the extrusion direction, a pressing residue forming base 2 made of Al or an Al alloy having a solidus temperature higher than that of the matrix metal.
It is a constitution of the invention that the above are coupled.
また、本発明の複合ビレットの製造方法は、筒状成形室
にAl又はAl合金のマトリクス金属粉末とセラミックス強
化材粉末とからなる混合粉末を充填して粉状Al基複合部
を形成すると共に、固相線温度が前記マトリクス金属の
それ以上であるAl又はAl合金からなる連成用基部を前記
複合部の軸方向端に充填した後、前記成形室を脱ガス密
封し、加熱状態で前記複合部および基部を加圧し、粉状
Al基複合部の粉末同士を焼結一体化すると共に該複合部
と連成用基部とを拡散接合することを発明の構成とする
ものである。Further, the manufacturing method of the composite billet of the present invention, while forming a powdery Al-based composite portion by filling the cylindrical forming chamber with a mixed powder of Al or Al alloy matrix metal powder and ceramics reinforcing material powder, After filling the axial end of the composite part with a coupling base made of Al or Al alloy having a solidus temperature higher than that of the matrix metal, the molding chamber is degassed and sealed, and the composite is heated in a heated state. Part and base are pressed and powdered
It is an aspect of the invention that the powders of the Al-based composite portion are sintered and integrated, and the composite portion and the coupling base portion are diffusion-bonded.
（作 用） 本発明のAl基複合ビレットは、Al基複合部の少なくとも
押出方向後端側にセラミックス強化材を含まないAl又は
Al合金からなる基部が形成されているので、押出材の押
出方向後端部に押しカスが残留しても、この部分は安価
な材料で形成されることになり、Al基複合部を無駄なく
押出加工に供することができる。しかも、押しカス部分
は安価な材料のため、除去しても複合押出材のコスト上
昇に影響しない。(Operation) The Al-based composite billet of the present invention is made of Al or Al which does not contain a ceramics reinforcing material at least on the rear end side in the extrusion direction of the Al-based composite part.
Since the base part made of Al alloy is formed, even if the scraps remain at the rear end of the extruded material in the extrusion direction, this part will be made of an inexpensive material, and the Al base composite part will not be wasted. It can be subjected to extrusion processing. Moreover, since the pushing dust portion is an inexpensive material, removing it does not affect the cost increase of the composite extruded material.
また、前記基部は、その固相線温度がマトリクス金属の
それ以上としたので、押出前のビレットの加熱および押
出加工時の加工発熱による液相の出現を防ぐことができ
る。Further, since the solidus temperature of the base is set to be higher than that of the matrix metal, it is possible to prevent the appearance of the liquid phase due to the heating of the billet before extrusion and the processing heat during the extrusion.
一方、本発明の複合ビレットの製造方法は、混合粉末が
充填された粉状Al基複合部とその軸方向端に配設充填さ
れた連成用基部とを筒状成形室内で脱ガス密封し、これ
らを加熱状態で加圧するので、粉状Al基複合部中の粉末
同士並びに該複合部と連成用基部とが拡散接合される。On the other hand, the manufacturing method of the composite billet of the present invention, the powdery Al base composite part filled with the mixed powder and the coupling base part filled and arranged at the axial end thereof are degassed and sealed in the cylindrical forming chamber. Since these are pressed in a heated state, the powders in the powdery Al-based composite part and the composite part and the coupling base part are diffusion-bonded.
この際、連成用基部は任意の大きさのものが適用でき、
また混合粉末が焼結結合されたAl基複合部と連成用基部
との接合強度にも優れ、ビレット押出加工時に接合部が
破断するという虞れがない。また、粉状Al基複合部は筒
状成形室を適宜の大きさにするだけで任意の大きさに形
成することができる。At this time, the coupling base can be of any size,
Further, the bonding strength between the Al-based composite part in which the mixed powder is sintered and bonded and the coupling base part is excellent, and there is no fear that the bonding part is broken during the billet extrusion process. Further, the powdery Al-based composite part can be formed in an arbitrary size only by making the cylindrical forming chamber an appropriate size.
（実施例） 第１図は本発明のAl基複合ビレットの実施例であり、Al
基複合部1 の押出方向後端側に押カス形成用基部2 が形
成されている。(Example) FIG. 1 is an example of the Al-based composite billet of the present invention.
A pressing residue forming base 2 is formed on the rear end side of the base composite part 1 in the extrusion direction.
Al基複合部1 は、Al又はAl合金のマトリクス金属と、該
金属中に分散されかつマトリクス金属と焼結一体化した
セラミックスウィスカーやセラミックス粒子等のセラミ
ックス強化材とで形成されている。The Al-based composite part 1 is formed of a matrix metal of Al or an Al alloy, and a ceramic reinforcing material such as ceramic whiskers or ceramic particles dispersed in the metal and integrally sintered with the matrix metal.
一方、前記基部2 は、固相線温度が前記マトリクス金属
のそれ以上のAl又はAl合金で形成されている。該基部の
軸方向長さは、50mm以上にするのがよい。50mm未満で
は、ビレットの押出時に複合材料が押しカス部に残留す
る虞があり、Al基複合押出製品の歩留りが低下するから
である。もっとも、基部の長さを必要以上に大きくする
と、押出材に不要なAl合金部が多くなり、経済性に劣
る。On the other hand, the base 2 is formed of Al or Al alloy having a solidus temperature higher than that of the matrix metal. The axial length of the base is preferably 50 mm or more. If it is less than 50 mm, the composite material may remain in the pressed residue when the billet is extruded, and the yield of the Al-based composite extruded product decreases. However, if the length of the base portion is unnecessarily increased, the amount of unnecessary Al alloy portion in the extruded material increases, resulting in poor economy.
上記複合ビレットを押出加工に使用すると、第２図のよ
うに、押カス部5 はすべて安価なAl合金材で形成される
ことになり、Al基複合材としての押出製品の歩留りが向
上する。When the above composite billet is used for extrusion processing, as shown in FIG. 2, all the pressed residue portions 5 are formed of an inexpensive Al alloy material, and the yield of the extruded product as an Al-based composite material is improved.
因みに、第５図はAl基複合部の後端に固相拡散接合され
た純Al製基部の軸方向長さとAl基複合材としての押出製
品の歩留りとの関係を示すグラフ図であり、同図より、
基部が50mm以上の場合、良好な歩留りが得られることが
看取される。尚、同図は、φ150 ×長さ 450mmのAl基複
合ビレットを押出比10で押出加工して得られたデータで
あり、Al基複合部はSiC ウィスカと7075Al合金粉末との
混合粉末（SiC ウィスカの配合割合18体積％）をＨＩＰ
により焼結一体化したものである。Incidentally, FIG. 5 is a graph showing the relationship between the axial length of the pure Al base portion solid-phase diffusion bonded to the rear end of the Al-based composite portion and the yield of the extruded product as the Al-based composite material. From the figure,
It is observed that good yield can be obtained when the base is 50 mm or more. The figure shows the data obtained by extruding an Al-based composite billet of φ150 × length 450 mm at an extrusion ratio of 10. The Al-based composite part is a mixed powder of SiC whiskers and 7075 Al alloy powder (SiC whiskers). Of 18% by volume of HIP)
It is integrated by sintering.
第３図は本発明の複合ビレットの他の実施例であり、基
部2 が形成されたAl基複合部1 の押出方向先端側に冠部
3 が形成されている。FIG. 3 shows another embodiment of the composite billet according to the present invention, in which the base portion 2 is formed on the front end side of the Al base composite portion 1 in the extrusion direction.
3 is formed.
該冠部3 は、基部2 と同様、固相線温度が前記マトリク
ス金属のそれ以上のAl又はAl合金で形成されている。ビ
レットの押出の際に液相が生じるのを防止するためであ
る。該冠部3 の軸方向長さは30mm程度でよい。Like the base 2, the crown 3 is formed of Al or an Al alloy having a solidus temperature higher than that of the matrix metal. This is to prevent a liquid phase from being generated during the extrusion of the billet. The axial length of the crown portion 3 may be about 30 mm.
冠部3 は下記の理由により形成されている。すなわち、
Al基複合材は難加工材であるため、押出加工時に押出遷
移領域になる押出材先端部は、加工抵抗が大きく、第２
図および第７図のように、クラック6 が発生する場合が
ある。冠部3 を形成しておくと、第４図に示すように、
該冠部3 は軟質材で形成されているため、その押出部7
にはクラックが発生せず、複合押出材の歩留りを更に向
上させることができる。The crown 3 is formed for the following reasons. That is,
Since the Al-based composite material is a difficult-to-process material, the extruded material tip part, which becomes the extruded transition region during the extruding process, has a large processing resistance.
As shown in FIGS. 7 and 7, cracks 6 may occur. When the crown 3 is formed, as shown in FIG. 4,
Since the crown portion 3 is formed of a soft material, its extruded portion 7
No cracks are generated in the composite extruded material, and the yield of the composite extruded material can be further improved.
次に、叙上の実施例に係る複合ビレットの製造方法につ
いて説明する。Next, a method for manufacturing the composite billet according to the above embodiment will be described.
まず、ＨＩＲ処理用の軟質金属で形成された筒状カプセ
ルを準備し、該カプセル内部の筒状成形室に、Al合金粉
末とセラミックス強化材粉末との混合粉末を充填して粉
状Al基複合部を形成すると共に、固相線温度が前記Al合
金のそれ以上であるAl合金粉末を前記粉状Al基複合部の
後端のみ又は先端および後端の両端に充填して、連成用
基部のみ又は連成用冠部および連成用基部の両者を形成
する。First, a cylindrical capsule made of a soft metal for HIR treatment is prepared, and a cylindrical molding chamber inside the capsule is filled with a mixed powder of an Al alloy powder and a ceramics reinforcing material powder to form a powdery Al-based composite. Forming a part, the solidus temperature is filled with Al alloy powder whose solidus temperature is higher than that of the Al alloy only at the rear end of the powdery Al-based composite part or both ends of the front end and the rear end, and the base for coupling. Form only a chisel or both a coupling crown and a coupling base.
この場合、前記基部および冠部はAl合金粉末に限らず、
塊状のAl合金材であってもよい。In this case, the base and crown are not limited to Al alloy powder,
It may be a lumpy Al alloy material.
次に、筒状成形室を脱ガスし、密封する。この場合、脱
ガスを促進するため加熱してもよい。その後、カプセル
をＨＩＰ処理にかけ、筒状成形室内の金属粉末同士を焼
結一体化すると共に、粉状Al基複合部と連成用基部およ
び連成用冠部とを拡散接合する。Next, the tubular molding chamber is degassed and sealed. In this case, heating may be performed to promote degassing. After that, the capsule is subjected to HIP treatment to sinter and integrate the metal powders in the cylindrical molding chamber, and to diffusion-bond the powdery Al-based composite portion to the coupling base portion and the coupling crown portion.
また、加圧コンテナ内の筒状成形室に同様の方法で粉状
Al基複合部や連成用基部等を充填形成し、真空ホットプ
レスによって粉末同士の焼結や各部の拡散接合により、
本発明の複合ビレットを形成することができる。Also, in the same manner as in the cylindrical molding chamber in the pressure container,
By filling and forming Al base composite part and coupling base part, etc. by vacuum hot pressing, sintering of powders and diffusion bonding of each part,
The composite billet of the present invention can be formed.
本発明の製造方法によれば、Al基複合部並びに基部およ
び冠部を任意の長さに成形することが容易で、しかも各
部の接合強度も充分高くすることが可能で、押出加工時
に各部の境界が破断する虞れを確実に防止することがで
きる。According to the manufacturing method of the present invention, it is easy to mold the Al-based composite portion and the base portion and the crown portion to any length, and it is possible to sufficiently increase the bonding strength of each portion. It is possible to reliably prevent the boundary from breaking.
ところで、Al基複合部に基部や冠部を連成する手段とし
て、これらを溶接により接合する方法が考えられるが、
Al基複合材料とAl合金との溶接は技術的に困難であり、
また充分な接合強度が得られず、押出時に接合部が破断
する虞れがあるため、本発明の複合ビレットの製造に適
用することは好ましくない。By the way, as a means for coupling the base portion and the crown portion to the Al-based composite portion, a method of joining these by welding can be considered,
Welding of Al-based composite material and Al alloy is technically difficult,
Further, it is not preferable to apply it to the production of the composite billet of the present invention, since sufficient joint strength cannot be obtained and the joint part may be broken during extrusion.
また、特開昭61−137624号には、Al基複合材の押出方向
先端側にAl合金材を冠着形成した複合ビレットが開示さ
れているが、この場合、両者は溶湯鍛造法で連成されて
いる。従って、本質的に長尺の複合ビレットの製造が困
難であり（通常、溶湯鍛造法では成形体の長さ／径が１
程度のものを製造対象としている。）、生産性が悪く、
押出加工時の押出製品の歩留りが低いという欠点があ
る。更に、開示の複合ビレットは、複合材のマトリック
スメタルを押出終期まて複合材押出部の軸方向外周面に
被着させて、ダイスと複合材との摩擦を回避するための
構造を提供しているものであり、本発明に係る基部並び
に実施例に係る冠部と技術的思想を異にするものであ
る。Further, Japanese Patent Laid-Open No. 61-137624 discloses a composite billet in which an Al alloy material is capped and formed on the tip side of an Al-based composite material in the extrusion direction. In this case, both are formed by a molten metal forging method. Has been done. Therefore, it is difficult to manufacture an essentially long composite billet (usually, in the molten metal forging method, the length / diameter of the formed body is 1
It is targeted for manufacturing. ), Poor productivity,
There is a drawback that the yield of extruded products during extrusion is low. Furthermore, the disclosed composite billet provides a structure for avoiding friction between the die and the composite material by depositing the matrix metal of the composite material on the outer peripheral surface in the axial direction of the composite material extrusion portion at the end of extrusion. The technical idea is different from that of the base portion according to the present invention and the crown portion according to the embodiment.
次に具体的な製造実施例を掲げて説明する。Next, specific manufacturing examples will be described.
製造実施例１ (1)SiC ウィスカと6061Al合金粉末とを均一に混合し
て、SiC ウィスカが20体積％配合された混合粉末を調製
した。Production Example 1 (1) SiC whiskers and 6061 Al alloy powder were uniformly mixed to prepare mixed powder containing 20 vol% of SiC whiskers.
(2)軟鋼製の円筒状カプセルに粉状Al基複合部として(1)
の混合粉末を軸方向長さで 500mm充填し、その上に連成
用基部として純Alの鋳塊を60mm充填した後、 500℃に加
熱しながら脱気して密封した。(2) As a powder Al-based composite part in a mild steel cylindrical capsule (1)
The mixed powder of (3) was filled in an axial length of 500 mm, and a pure Al ingot as a coupling base was filled in it for 60 mm, and then degassed and sealed while heating at 500 ° C.
(3)このカプセルに 625℃，1000kgf/cm2，４HrのＨＩＰ
処理を施した後、カプセルを除去して精整加工してφ15
0 ×長さ550 mmの複合ビレットを得た。該ビレットの前
端部には長さ55mmの純Al製基部が形成されていた。(3) HIP of 625 ℃, 1000kgf / cm 2 , 4Hr in this capsule
After the treatment, remove the capsule and make a fine adjustment to φ15
A 0 × 550 mm long composite billet was obtained. A 55 mm long pure Al base was formed at the front end of the billet.
(4)この複合ビレットを押出比15で押出加工に供したと
ころ、Al基複合材としての押出製品の歩留りは89％であ
った。(4) When this composite billet was subjected to extrusion processing with an extrusion ratio of 15, the yield of the extruded product as an Al-based composite material was 89%.
尚、Al基複合材のみからなる同寸法の複合ビレットを同
様の条件で押出加工に供したところ、歩留りは74％であ
り、本発明の複合ビレットに比べて歩留りはかなり低い
値であった。When a composite billet of the same size composed of only the Al-based composite material was subjected to extrusion processing under the same conditions, the yield was 74%, which was a considerably low value as compared with the composite billet of the present invention.
製造実施例２ (1)SiC ウィスカと2024Al合金粉末とを均一に混合し
て、SiC ウィスカが25体積％配合された混合粉末を調製
した。Production Example 2 (1) SiC whiskers and 2024Al alloy powder were uniformly mixed to prepare a mixed powder containing 25% by volume of SiC whiskers.
(2)軟鋼製の円筒状カプセルに、まず2024Al合金粉末を
連成用冠部として50mm充填し、次いでAl基複合部として
(1)の混合粉末を 500mm充填し、更に連成用基部として2
024Al合金粉末を70mm充填した後、470 ℃で脱気処理し
て密封した。(2) Cylindrical capsule made of mild steel, first filled with 2024Al alloy powder 50mm as a crown for coupling, then as an Al-based composite part
Fill the mixed powder of (1) to 500 mm, and use 2 as a base for coupling.
After filling 70 mm of 024 Al alloy powder, it was degassed at 470 ° C. and sealed.
(3)このカプセルに 500℃，1300kgf/cm2，３HrのＨＩＤ
処理を施した後、カプセルを除去して精電加工を施して
φ150 ×長さ600 mmの複合ビレットを得た。該ビレット
の先端部には長さ30mmのAl合金製冠部が形成され、後端
部には長さ55mmのAl合金製基部が形成されていた。(3) HID of 500 ℃, 1300kgf / cm 2 , 3Hr in this capsule
After the treatment, the capsules were removed and subjected to a precision machining to obtain a composite billet of φ150 x length 600 mm. A 30 mm long Al alloy crown was formed at the tip of the billet, and a 55 mm long Al alloy base was formed at the rear end.
(4)この複合ビレットを押出比20で押出加工に供したと
ころ、Al基複合材としての押出製品の歩留りは91％であ
った。(4) When this composite billet was subjected to extrusion processing at an extrusion ratio of 20, the yield of the extruded product as an Al-based composite material was 91%.
尚、Al基複合材のみからなる同寸法の複合ビレットを同
様の条件で押出加工に供したところ、歩留りは75％であ
り、本発明の複合ビレットを使用した場合に比べて歩留
りの低下が著しい。Incidentally, when the composite billet of the same size consisting only of the Al-based composite material was subjected to extrusion processing under the same conditions, the yield was 75%, and the yield was remarkably reduced as compared with the case where the composite billet of the present invention was used. .
製造実施例３ (1)Sic ウィスカと7075Al合金粉末とを均一に混合し
て、SiC ウィスカが15体積％配合された混合粉末を調製
した。Manufacturing Example 3 (1) Sic whiskers and 7075 Al alloy powder were uniformly mixed to prepare a mixed powder containing 15 vol% of SiC whiskers.
(2)真空ホットプレスのコンテナ内の筒状成形室に、ま
ず7075Al合金鋳塊を連成用冠部として35mm充填し、次い
で粉状Al基複合部として(1)の混合粉末を500 mm充填
し、更に連成用基部として7075Al合金鋳塊を60mm充填し
た。(2) In the cylindrical forming chamber in the vacuum hot press container, first fill the 7075 Al alloy ingot as a crown for compounding 35 mm, and then as the powdered Al matrix composite part, fill 500 mm with the mixed powder of (1). Then, 60 mm of a 7075 Al alloy ingot was filled as a coupling base.
(3)その後、真空排気を行い、500 ℃、1000kgf/cm2、2H
r の真空ホットプレス処理により固化成形してφ200 ×
長さ350 mmの複合ビレットを製造した。前記冠部および
基部は混合粉末が焼結一体化したAl基複合部に拡散接合
されていた。(3) After that, vacuum evacuation is performed, 500 ℃, 1000kgf / cm 2 , 2H
φ200 × solidified by vacuum hot press treatment of r
A 350 mm long composite billet was produced. The crown portion and the base portion were diffusion-bonded to the Al-based composite portion in which the mixed powders were sintered and integrated.
(4)この複合ビレットを押出比25で押出加工に供したと
ころ、Al基複合材としての押出製品の歩留りは89％であ
った。(4) When this composite billet was subjected to extrusion processing at an extrusion ratio of 25, the yield of the extruded product as an Al-based composite material was 89%.
尚、Al基複合材のみからなる同寸法の複合ビレットを同
様の条件で押出加工に供したところ歩留りは68％であ
り、本発明の複合ビレットに比べて歩留りは著しく低い
値であった。When a composite billet of the same size made of only the Al-based composite material was subjected to extrusion processing under the same conditions, the yield was 68%, which was a significantly lower value than the composite billet of the present invention.
（発明の効果） 以上説明した通り、本発明の複合ビレットによれば、Al
基複合部の押出方向後端に所定の固相線温度を有するAl
合金で形成された押カス形成用基部が設けられているか
ら、押カス部を前記Al合金で形成でき、押出加工に際し
て、Al基複合押出材としての製品歩留りの向上並びに製
品コストの低減を図ることができる。(Effect of the invention) As described above, according to the composite billet of the present invention, Al
Al having a predetermined solidus temperature at the rear end in the extrusion direction of the base composite part
Since the pressing residue forming base formed of the alloy is provided, the pressing residue can be formed of the Al alloy, and at the time of extrusion processing, the product yield as the Al-based composite extruded material is improved and the product cost is reduced. be able to.
また、本発明の製造方法によれば、粉状Al基複合部を焼
結一体化でき、かつ焼結一体化されたAl基複合部と連成
用基部とを拡散接合することができるので、各部を任意
の大きさに容易に形成でき、また両部の境界における接
合強度も優れるので、押出加工時に境界部において破断
する虞れがない。Further, according to the manufacturing method of the present invention, it is possible to sinter and integrate the powdery Al-based composite portion, and since it is possible to diffusion-bond the sintered and integrated Al-based composite portion and the coupling base portion, Since each part can be easily formed to an arbitrary size and the bonding strength at the boundary between both parts is excellent, there is no risk of breakage at the boundary part during extrusion processing.
第１図および第２図は本発明実施例に係るAl基複合ビレ
ットおよび同複合ビレットによる押出材全体の縦断面
図、第３図および第４図は他の実施例に係るAl基複合ビ
レットおよび同複合ビレットによる押出材全体の縦断面
図、第５図はAl基複合ビレットの後端部に形成された基
部の軸方向長さとAl基複合材としての押出製品の歩留り
との関係を示すグラフ図、第６図および第７図は従来の
Al基複合材のみからなるビレットおよび同ビレットによ
る押出材全体の縦断面図である。 １……Al基複合部、２……押カス成形用基部。1 and 2 are vertical cross-sectional views of an Al-based composite billet according to an embodiment of the present invention and an extruded material using the composite billet, and FIGS. 3 and 4 are Al-based composite billets according to other embodiments. FIG. 5 is a graph showing the relationship between the axial length of the base formed at the rear end of the Al-based composite billet and the yield of the extruded product as the Al-based composite material. Figures 6, 6 and 7 are conventional
FIG. 3 is a vertical cross-sectional view of a billet made of only an Al-based composite material and an entire extruded material using the billet. 1 ... Al base composite part, 2 ... Base part for pressing scrap forming.
Claims (2)
クス強化材とで形成されたAl基複合部1 の少なくとも押
出方向後端側に、固相線温度が前記マトリクス金属のそ
れ以上であるAl又はAl合金からなる押カス形成用基部2
が連成されていることを特徴とする押出加工用Al基複合
ビレット。1. An Al-based composite part 1 formed of a matrix metal of Al or an Al alloy and a ceramics reinforcing material, at least on the rear end side in the extrusion direction, having a solidus temperature higher than that of the matrix metal, or Base 2 for forming pressed residue made of Al alloy
An Al-based composite billet for extrusion processing characterized by being compounded.
属粉末とセラミックス強化材粉末とからなる混合粉末を
充填して粉状Al基複合部を形成すると共に、固相線温度
が前記マトリクス金属のそれ以上であるAl又はAl合金か
らなる連成用基部を前記複合部の軸方向端に充填した
後、前記成形室を脱ガス密封し、加熱状態で前記複合部
および基部を加圧し、粉状Al基複合部の粉末同士を焼結
一体化すると共に該複合部と連成用基部とを拡散接合す
ることを特徴とする押出加工用Al基複合ビレットの製造
方法。2. A cylindrical molding chamber is filled with a mixed powder of a matrix metal powder of Al or Al alloy and a ceramics reinforcing material powder to form a powdery Al-based composite portion, and the solidus temperature is the matrix. After filling the axial end of the composite part with a coupling base made of Al or Al alloy that is more than metal, the molding chamber is degassed and sealed, and the composite part and the base are pressurized in a heated state, A method for manufacturing an Al-based composite billet for extrusion, comprising sintering and integrating powders of a powdery Al-based composite portion together with diffusion-bonding the composite portion and a coupling base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2659087A JPH0625363B2 (en) | 1987-02-06 | 1987-02-06 | Extruded A-1 group composite vitret and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2659087A JPH0625363B2 (en) | 1987-02-06 | 1987-02-06 | Extruded A-1 group composite vitret and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63195201A JPS63195201A (en) | 1988-08-12 |
| JPH0625363B2 true JPH0625363B2 (en) | 1994-04-06 |
Family
ID=12197752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2659087A Expired - Lifetime JPH0625363B2 (en) | 1987-02-06 | 1987-02-06 | Extruded A-1 group composite vitret and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625363B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794612A (en) * | 2019-03-19 | 2019-05-24 | 鼎镁（昆山）新材料科技有限公司 | Aluminum matrix composite and preparation method thereof is made in a kind of Fast Sintering powder metallurgy |
| KR102266847B1 (en) * | 2019-04-15 | 2021-06-21 | 부경대학교 산학협력단 | Method for manufacturing billet for plastic working used for preparing composite material and billet manufactured thereby |
-
1987
- 1987-02-06 JP JP2659087A patent/JPH0625363B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63195201A (en) | 1988-08-12 |
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