JPS59129750A - High strength composite al material for water storage vessel having pitting resistance - Google Patents
High strength composite al material for water storage vessel having pitting resistanceInfo
- Publication number
- JPS59129750A JPS59129750A JP610283A JP610283A JPS59129750A JP S59129750 A JPS59129750 A JP S59129750A JP 610283 A JP610283 A JP 610283A JP 610283 A JP610283 A JP 610283A JP S59129750 A JPS59129750 A JP S59129750A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- water storage
- core material
- corrosion
- storage vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【発明の詳細な説明】
この発明は、すぐれた耐孔食性および高強度を有し５特
に車輛用および航空機用水タンクや、大型貯水タンクな
どの高強度貯水容器の製造に使用するのに適したＡＱ合
金複合材に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention has excellent pitting corrosion resistance and high strength, and is particularly suitable for use in manufacturing high-strength water storage containers such as vehicle and aircraft water tanks and large water storage tanks. This relates to an AQ alloy composite material.
従来、一般に、上記の各種高強度貯水容器の製造には、
時効析出処理によりＡ２合金の中では最高級の強度が得
られ、かつ比較的良好な耐食性を有し、さらに溶接性お
よび熱間加工性にもすぐれているＪＩＳ７０’７５ な
どのＡＡ’−Ｚｎ −Ｍｇ−’Ｃｕ系合金の単板材が用
いられている。なお、このＡＭ −Ｚｎ −Ｍｇ−Ｃｕ
系合金が比較的良好な耐食性を示すのは、その表面に強
固な自然酸化皮膜が形成されることに起因するものであ
る。しかしながら、その酸化皮膜中に不可避的に不純物
が含有されていたり、熱的あるいは機械的に傷が付与さ
れたシすると、これらの個所は充分な耐食性を発揮する
ことができず、したがってこれらの個所は選択的に溶解
するようになり、この結果局部腐食、すなわち孔食に至
る場合がしばしば見られ、特にこの／Ｖ −Ｚｎ −Ｍ
ｇ−Ｃｕ系合金の場合、合金成分として含有しているＣ
ｕ成分によって粒界腐食などの局部腐食が一段と加速さ
れる結果、孔食の成長速度は著しく早められるものであ
った。Conventionally, the manufacturing of the various high-strength water storage containers described above generally involves the following steps:
AA'-Zn - such as JIS70'75, which has the highest strength among A2 alloys through aging precipitation treatment, has relatively good corrosion resistance, and has excellent weldability and hot workability. A veneer material of Mg-'Cu alloy is used. Note that this AM-Zn-Mg-Cu
The reason why these alloys exhibit relatively good corrosion resistance is that a strong natural oxide film is formed on their surfaces. However, if the oxide film inevitably contains impurities or is damaged thermally or mechanically, these areas will not be able to exhibit sufficient corrosion resistance. becomes selectively dissolved, which often leads to localized corrosion, that is, pitting corrosion, and especially this /V -Zn -M
In the case of g-Cu alloy, C contained as an alloy component
As a result of the u component further accelerating local corrosion such as intergranular corrosion, the growth rate of pitting corrosion was significantly accelerated.
そこで、本発明者等は、上述のような観点から、孔食発
生のない貯水容器用高強度材料を開発すべく研究を行な
った結果、Ｚｎ ： ３．０−８．４％、 Ｍｇ ：０
、５〜３． ’７％、 Ｃｕ： ０． ’７〜３．０％
を含有し、さらに必要に応じてＣｒ：０．０５〜０３５
チおよびＭｎ：００５〜１．５０％のうちの１種または
２種を含治し、残りがＡＡと不可避不純物からなる組成
を有す−る／Ｖ金合金芯材とし、かつＭｇ ： ０．３
〜５．６ ％ 、 Ｚｎ、Ｏ１〜１．０％を含有し、残
りがＡｌと不可避不純物からなる組成（以上重量係、以
下襲は重量％を示す〕を有するＡ１合金を皮材とし、前
記芯材の片面あるいは両面に前記皮材をクラッドした複
合材とすると、とのＡ１合金複合材は、前記芯材によっ
て高強度、並びに良好な成形加工性および溶接性をもつ
ようになり、一方前記皮材においては、ＭｇとＺｎの共
存によって、その表面に強固な自然酸化皮膜が形成され
るようになると共に、皮材中に不可避不純物が含有した
り、熱的あるいは機械的に傷が付けられたシした場合に
も、Ｚｎ成分の作用によって構体が９の全面腐食型にす
るために孔食発生が防止され、さらに例えばＣｕイオン
を多量に含有する水を取扱う場合のような苛酷な環境下
では、前記皮材に孔食が発生する場合があるが、このよ
うな場合にも、前記芯材がＣｕ成分を含有することに原
因して、電気化学的な孔食発生電位が前記芯材に比して
前記皮材の方が低いことから、芯材と皮材との界面にお
いて皮材がアノードとして溶出 λする犠牲陽極効果
によって芯材が防食され、孔食が芯材にまで及ぶことが
なく、したがって、このＡ１合金複合材を高強度が要求
される貯水容器の製造に用いた場合、著しく長期に亘る
使用が可能になるという知見を得たのである。Therefore, from the above-mentioned viewpoint, the present inventors conducted research to develop a high-strength material for water storage containers that does not cause pitting corrosion, and as a result, they found that Zn: 3.0-8.4%, Mg: 0
, 5-3. '7%, Cu: 0. '7~3.0%
Cr:0.05-035 as necessary.
A /V gold alloy core material containing one or two of H and Mn: 0.005 to 1.50%, with the remainder consisting of AA and unavoidable impurities, and Mg: 0.3
5.6%, Zn, and 1 to 1.0% O, with the remainder consisting of Al and unavoidable impurities. When a composite material is formed by cladding the skin material on one or both sides of the core material, the A1 alloy composite material with the core material has high strength and good formability and weldability. In skin materials, the coexistence of Mg and Zn causes a strong natural oxide film to be formed on the surface, and also prevents inevitable impurities from being contained in the skin material or from being scratched thermally or mechanically. Even when the structure is exposed to corrosion, pitting corrosion is prevented because the Zn component makes the structure fully corroded (9), and it is also resistant to harsh environments such as when handling water containing a large amount of Cu ions. In this case, pitting corrosion may occur in the skin material, but even in such a case, the electrochemical pitting corrosion potential is caused by the core material containing a Cu component. Since the skin material has a lower corrosion resistance than the core material, the core material is protected from corrosion due to the sacrificial anode effect of the skin material being eluted as an anode at the interface between the core material and the skin material, and pitting corrosion extends to the core material. Therefore, we have found that when this A1 alloy composite material is used in the manufacture of water storage containers that require high strength, it can be used for an extremely long period of time.
この発明は、上記知見にもとづいてなされたもの、であ
って、以下に芯材および皮材の成分組成を上記の通りに
限定した理由を説明する。This invention has been made based on the above findings, and the reason why the component compositions of the core material and the skin material are limited as described above will be explained below.
Ａ、芯材
（ａ） ＺｎおよびＭｇ
これらの成分には、Ｍｇ ２ Ｚｎを形成し、素地中に
微細均一に析出して芯材の強度を向上させる作用がある
が、その含有量がそれぞれＺｎ：３．０％未満およびＭ
ｇ：０５％未満ではＭｇ ２ Ｚｎの析出量が少なすぎ
て所望の高強度を確保することができず、一方Ｚｎにあ
っては８４％を越えて含有させると応力腐食割れ感受性
が増大するようになり、またＭｇにおいては３７％を越
えて含有させると熱間圧延々どの成形加工性が劣化する
ように々ることがら、その含有量を、それぞれＺｎ：３
．０〜８．４％、’Ｍｇ：０５〜３７％と定めた。A. Core material (a) Zn and Mg These components have the effect of forming Mg 2 Zn and precipitating finely and uniformly in the base material to improve the strength of the core material, but the content is higher than that of Zn. : Less than 3.0% and M
If the content exceeds 84% of Zn, stress corrosion cracking susceptibility increases. In addition, if the Mg content exceeds 37%, the formability during hot rolling will deteriorate.
．． 0 to 8.4%, 'Mg: 05 to 37%.
（ｂ） ’ Ｃ１１
Ｃｕ成分には、Ｍｇ２Ｚｎ析出物を素地中に微細に分散
させる作用があるほか、自身もＣｕ−Ｍｇ系析出物を形
成して芯材の強度を高め、かつ芯材の電気化学的な孔食
電位をＣｕを含有しない皮材に比して著しく責にし、も
ってこの結果生じた大きな孔食電位差によって皮材に犠
牲陽極効果を十分に発揮させる作用があるが、その含有
量が０．７％未満では、前記作用に所望の効果が得られ
ず、一方３．０％を越えて含有させると熱間圧延などの
成形加工性が劣化するようになることから、その含有量
を０７〜３．０％と定めた。(b) 'C11 Cu component not only has the effect of finely dispersing Mg2Zn precipitates in the matrix, but also forms Cu-Mg precipitates to increase the strength of the core material and improve the electrical properties of the core material. The chemical pitting potential is significantly higher than that of a skin material that does not contain Cu, and the resulting large pitting corrosion potential difference has the effect of making the skin material fully exhibit the sacrificial anode effect. If the content is less than 0.7%, the desired effect cannot be obtained, while if the content exceeds 3.0%, the formability in hot rolling etc. will deteriorate. was set at 07% to 3.0%.
（ｃ） ＣｒおよびＭｎ
これらの成分には、結晶粒を微細化して強度を向」ニさ
せると共に、応力腐食割れ感受性を著しく抑制する作用
があるので、これらの特性が要求される場合に必要に応
じて含有されるが、その含有量、が、それぞれＣｒ：０
．０５％未満およびＭｎ：Ｏ，０，５係未満では前記作
用に所望の向上効果が得られず、一方Ｃｒ：０．３５％
およびＭｎ：１．５０％をそれぞれ越えて含有させると
、焼入感受性が劣化するようになると共に、鋳造時に巨
大晶が形成され易くなり、不均一腐食の原因ともなるこ
とがら、その含有量を、それぞれＣｒ： ０．０５〜０
．３５％、Ｍｎ：００５〜１．５０％と定めた。(c) Cr and Mn These components have the effect of improving strength by refining crystal grains and significantly suppressing stress corrosion cracking susceptibility, so they are necessary when these properties are required. The content is Cr:0, respectively.
．． If the ratio of Mn:O is less than 0.05% and the ratio of Mn:O is less than 0.5%, the desired effect of improving the above action cannot be obtained, while Cr:0.35%
and Mn: If the content exceeds 1.50%, quenching sensitivity deteriorates, and giant crystals are more likely to form during casting, which may cause uneven corrosion. , each Cr: 0.05~0
．． 35%, Mn: 005-1.50%.
Ｂ、皮材
（ａ） Ｍｇ
Ｍｇ成分には、Ｚｎと共存することにより皮材表面に良
好な自然酸化皮膜を形成して、皮材にすぐれた耐食性を
付与すると共に、固溶強化にょシ皮材自体の強度を向上
させる作用があるが、その含有量が０３％未満では前記
作用に所望の効果が得られず、一方４０％を越えて含有
させると、熱間圧延などの成形加工性が劣化するように
なるばかシでなく、熱処理条件によっては結晶粒界にＡ
ｌ−Ｍｇ系の析出物（β相）が形成されるようになって
粒界腐食をはじめとする不均一腐食や孔食が発生するよ
うになることから、その含有量を０３〜４０襲と定めた
。B. Skin material (a) Mg The Mg component forms a good natural oxide film on the surface of the skin material by coexisting with Zn, giving the skin material excellent corrosion resistance, and also solid solution strengthened Nyoshi skin. It has the effect of improving the strength of the material itself, but if the content is less than 0.3%, the desired effect cannot be obtained, while if the content exceeds 40%, the forming processability in hot rolling etc. It does not cause deterioration, but depending on the heat treatment conditions, A may be formed at the grain boundaries.
Since l-Mg-based precipitates (β phase) begin to form and cause uneven corrosion including intergranular corrosion and pitting corrosion, the content should be increased from 03 to 40. Established.
（ｂ） Ｚｎ
Ｚｎ成分には、上記のとおシＭｇとの共存において皮材
表面に自然酸化皮膜を形成して耐食性を向上させ、かつ
その腐食形態を構体が９の全面腐食型にして孔食の発生
を抑制し、さらに苛酷な環境下において５例え皮材に孔
食が発生しても、このＺｎ含有によって皮材を芯材に比
して電気化学的に卑に保持することから、皮材が優先的
に溶解し、この犠牲陽極効果によって孔食が芯材に及ぶ
のを阻止する作用があるが、その含有量がＯ，］％未満
では前記作用に所望の効果が得られず、一方１０％を越
えて含有させると、逆に不均一腐食や孔食が発生ずるよ
うになると共に、腐食量も増大するようになって皮材の
芯材に対する犠牲陽極効果が比較的早期に消滅するよう
になることから、その含有量をＱま〜１０％と定めた。(b) Zn When the Zn component coexists with the above-mentioned Mg, it forms a natural oxide film on the surface of the coating material to improve corrosion resistance, and the structure is made into a general corrosion type (9) to prevent pitting corrosion. Furthermore, even if pitting corrosion occurs in the skin material under harsh environments, the Zn content keeps the skin material electrochemically less strong than the core material. The material is preferentially dissolved, and this sacrificial anode effect has the effect of preventing pitting corrosion from reaching the core material, but if the content is less than O,]%, the desired effect cannot be obtained, On the other hand, if the content exceeds 10%, uneven corrosion and pitting corrosion will occur, and the amount of corrosion will also increase, causing the sacrificial anode effect on the core material of the skin material to disappear relatively quickly. Therefore, the content was set at Q~10%.
つぎに、この発明のＡＰ、合金複合材を実施例により具
体的に説明する。Next, the AP and alloy composite material of the present invention will be specifically explained using Examples.
実施例
通常の溶解鋳造法により第１表に示される成分組成をも
っ□た本発明皮材用Ａｇ、合金１〜６．比較皮利用ＡＣ
合金１〜４．および本発明芯材用ＪＶ合金ｌ第
１ 表
〜４をそれぞれ溶製した。なお、比較皮材用ＡＵ金合金
〜４は、いずれも構成成分のうちのいずれがの成分含有
、１ｉｉｉ−（第１表忙※印を付す）がこの発明の範囲
から外れた組成をもつものである。また、いずれのＡｅ
金合金不可避不純物としてＦｅ：０．２１〜０２２％、
Ｓｉ： ０．０８〜０．０９％を含有するものであっ
た。Examples Ag and Alloys 1 to 6 for skin materials of the present invention having the compositions shown in Table 1 were prepared by a conventional melting and casting method. Comparative leather usage AC
Alloys 1-4. and JV alloy No. 1 for the core material of the present invention.
1 Each of Tables 1 to 4 was melted. In addition, all of the comparative AU gold alloys for skin materials ~ 4 contain any of the constituent components, and 1iii- (marked with * in Table 1) has a composition outside the scope of this invention. It is. Also, which Ae
Fe: 0.21-022% as an inevitable impurity of gold alloy,
Si: It contained 0.08 to 0.09%.
ついで、上記本発明皮材用ＡＣ合金１〜６．比較皮材用
ＡＱ合金１〜４．および本発明芯材用Ａ９合金１〜４に
それぞれ通常の条件で均質化処理を施した後、同じく通
常の条件で熱間圧延を施して、本発明皮相用Ａｉ！合金
１〜６および比較皮材用Ａ１合金１〜４は板厚 １Ｍの
熱延板に、一方本発明芯材用ＡＣ合金１−４は板厚 Ｂ
ｗｎの熱延板とし、これらの熱延板を第２表に示される
組合せにて重ね合わせ、熱間および冷間圧延にて板厚：
ＩＲとすることによって、両面クラッドの本発明Ａｇ、
合金複合相ｌ〜６．比較ＡＣ合金複合材１〜４をそれぞ
れ製造した。さらに比較の目的で、本発明芯材用ＡＱ金
合金、３の熱延板に冷間圧延を施して板厚：１朋の比較
Ａｇ、合金単板材１．２を製造した。Next, the above-mentioned AC alloys 1 to 6 for skin materials of the present invention. Comparative AQ alloys 1 to 4 for skin materials. and A9 alloys 1 to 4 for the core material of the present invention were homogenized under normal conditions, and then hot rolled under the same normal conditions to obtain Ai for the superficial layer of the present invention! Alloys 1 to 6 and comparison A1 for skin material Alloys 1 to 4 were made into hot rolled sheets with a thickness of 1M, while AC alloy 1-4 for core material of the present invention was made into a hot rolled sheet with a thickness of B.
wn hot-rolled sheets, these hot-rolled sheets are stacked in the combinations shown in Table 2, and the sheet thickness is determined by hot and cold rolling.
By making it IR, the present invention Ag of double-sided cladding,
Alloy composite phase l~6. Comparative AC alloy composites 1-4 were each produced. Furthermore, for the purpose of comparison, a comparative Ag alloy veneer material 1.2 having a thickness of 1 was produced by cold rolling a hot-rolled sheet of the AQ gold alloy for core material of the present invention, 3.
つぎに、この結果得られた本発明ＡＣ合金複合材１〜６
．比較Ｍ合金複合拐１〜４．および比較ＡＱ合金単板材
１．２について、温度：’４６０℃に２時間保持の溶体
化処理後水冷し、引続いて温度：１１．０℃に６時間保
持後、再び温度：１５０℃に８時間保持の２段時効処理
を施した状態で、引張試験を行ない、引張り強さを測定
すると共に、ｌｐｐｍのＣｕイオン含有の温度：４０℃
の水道水中に６０日間浸漬の水道水浸漬試験、並びにＣ
ｔ−イオン、 ５ｏ４− イオン、およびＨＣＯ；イ
オンをそれそる１１００ｐｐ含有し、さらにＣｕイオン
をｌｐｐｍ含有する温度、４０℃の水溶液に６０日間浸
漬の水溶液浸漬試験を行ない、試験後腐食生成物を除去
して腐食減量、孔食数、および最大孔食深さをそれぞれ
測定した。これらの測定結果を第２表に示した。Next, the resulting AC alloy composites 1 to 6 of the present invention
．． Comparative M alloy composites 1 to 4. And comparative AQ alloy veneer material 1.2 was solution treated at a temperature of 460°C for 2 hours, cooled with water, then kept at a temperature of 11.0°C for 6 hours, and then returned to a temperature of 150°C for 8 hours. A tensile test was carried out under the condition of two-stage aging treatment of time holding, and the tensile strength was measured, and the temperature of 1 ppm Cu ion content: 40 ° C.
Tap water immersion test of immersion in tap water for 60 days, and C
An aqueous solution immersion test was conducted for 60 days in an aqueous solution containing 1100 ppm of t- ions, 5o4- ions, and HCO ions, and 1 ppm of Cu ions for 60 days, and corrosion products were removed after the test. The corrosion weight loss, number of pitting corrosion, and maximum pitting depth were measured. The results of these measurements are shown in Table 2.
第２表に示される結果から、本発Ｆ３ＪＪＡ１合金複合
材１〜６は、高強度を有し、かついずれの浸漬試験にお
いても比較Ａｕ合金複合材１〜４および比較／Ｖ合金単
板材１．２に比して、すぐれた耐食性および耐孔食性を
示し、特に耐孔食性は著しくすぐれていることが明らか
である。From the results shown in Table 2, the F3JJA1 alloy composites 1 to 6 of the present invention have high strength, and in all immersion tests, Comparative Au alloy composites 1 to 4 and Comparative/V alloy veneer material 1. It is clear that this material exhibits superior corrosion resistance and pitting corrosion resistance compared to No. 2, and in particular, the pitting corrosion resistance is significantly superior.
上述のように、この発明のＡｕ合金複合材は、すぐれた
耐食性、特に耐孔食性を有し、かつ芯材によって高強度
、並びにすぐれた溶接性および成形加工性が確保される
ので、特に高強度が要求される貯水容器の製造に用いる
のに適し、しかも実用に際して、Ｃｕイオンを多量に含
有する水溶液にさらされるような苛酷な使用条件下にお
かれても皮材に発生した孔食が芯材に及ぶことはなく、
この結果著しく長期に亘っての使用が可能となるなど工
業上有用な特性を有するものである。As mentioned above, the Au alloy composite material of the present invention has excellent corrosion resistance, especially pitting corrosion resistance, and the core material ensures high strength as well as excellent weldability and formability, so it is particularly suitable for high corrosion resistance. Suitable for use in manufacturing water storage containers that require strength, and in practical use, pitting corrosion that occurs in the skin material will not occur even under harsh usage conditions such as exposure to aqueous solutions containing large amounts of Cu ions. It does not reach the core material,
As a result, it has industrially useful properties such as being able to be used for an extremely long period of time.
出願人 三菱アルミニウム株式会社Applicant: Mitsubishi Aluminum Corporation
Claims (2)
： ０．５〜３．７％、 Ｃｕ： ０．７〜３．０％を
含有し、残りがＡＱと不可避不純物からなる組成を有す
るＡｃ合金で構成され、かつ皮材が、Ｍｇ： ０．３〜
４．０％、Ｚｎ：０．１〜１．０％を含有し、残９がＡ
ｎと不可避不純物からなる組成（以上重量％）を有する
Ａ２合金で構成されたことを特徴とする耐孔食性にすぐ
れた貯水容器用高強度ＡＱ、合金合金材。(1) Core material is Zn: 3, o ~ 8.4% + Mg
: 0.5 to 3.7%, Cu: 0.7 to 3.0%, and the remainder is AQ and unavoidable impurities, and the skin material contains Mg: 0.7 to 3.0%. 3~
4.0%, Zn: 0.1 to 1.0%, and the remaining 9 is A.
A high-strength AQ alloy material for a water storage container with excellent pitting corrosion resistance, characterized in that it is made of an A2 alloy having a composition (the above weight %) consisting of n and unavoidable impurities.
０．５−３．７％、 Ｃｕ： ０．７〜３．０％を含有
し、さらにｃｒ：ｏ、 ｏ ５〜０．３５％およびＭｎ
： ０．０５〜１．５０％のうちの１種または２種を含
有し、残りがＡｃと不可避不純物からなる組成を有する
Ａ９合金で構成さ−れ５かつ皮材が、 Ｍｇ ： ０．
３ ”−４，０％、 Ｚｎ： ０．１−１．０係を含有
し、残りがＡｇ、と不可避不純物からなる組成（以上重
量％）を有するＡ２合金で構成されたことを特徴とする
耐孔食性にすぐれた貯水容器用高強度ＡＡ合合金金材。(2) Core material contains Zn: 3.0 to 8.4%, Mg:
0.5-3.7%, Cu: 0.7-3.0%, further cr:o, o 5-0.35% and Mn
Mg: 0.05 to 1.50%, and the remainder is Ac and unavoidable impurities.
3"-4.0%, Zn: 0.1-1.0%, and the rest is Ag, and the remaining is composed of A2 alloy having a composition (weight %) consisting of inevitable impurities. High strength AA alloy material for water storage containers with excellent pitting corrosion resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP610283A JPS59129750A (en) | 1983-01-18 | 1983-01-18 | High strength composite al material for water storage vessel having pitting resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP610283A JPS59129750A (en) | 1983-01-18 | 1983-01-18 | High strength composite al material for water storage vessel having pitting resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59129750A true JPS59129750A (en) | 1984-07-26 |
| JPH028019B2 JPH028019B2 (en) | 1990-02-22 |
Family
ID=11629134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP610283A Granted JPS59129750A (en) | 1983-01-18 | 1983-01-18 | High strength composite al material for water storage vessel having pitting resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59129750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6333539A (en) * | 1986-07-24 | 1988-02-13 | ソシエテ・メタル−ルジク・ドウ・ジエルザ | Al alloy for pressure hollow body |
| JPH0247235A (en) * | 1988-08-05 | 1990-02-16 | Showa Alum Corp | Seamless rim of autobicycle or the like using al-zn-mg-cu alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575840A (en) * | 1980-06-12 | 1982-01-12 | Mitsubishi Alum Co Ltd | Aluminum alloy brazing sheet having excellent pitting- corrosion resistance and high strength |
| JPS5713141A (en) * | 1980-06-27 | 1982-01-23 | Sumitomo Light Metal Ind Ltd | Finely grained material for stringer of airplane with superior corrosion resistance and its manufacture |
-
1983
- 1983-01-18 JP JP610283A patent/JPS59129750A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575840A (en) * | 1980-06-12 | 1982-01-12 | Mitsubishi Alum Co Ltd | Aluminum alloy brazing sheet having excellent pitting- corrosion resistance and high strength |
| JPS5713141A (en) * | 1980-06-27 | 1982-01-23 | Sumitomo Light Metal Ind Ltd | Finely grained material for stringer of airplane with superior corrosion resistance and its manufacture |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6333539A (en) * | 1986-07-24 | 1988-02-13 | ソシエテ・メタル−ルジク・ドウ・ジエルザ | Al alloy for pressure hollow body |
| JPH0575815B2 (en) * | 1986-07-24 | 1993-10-21 | Metaruurujiku Do Jeruza Soc | |
| JPH0247235A (en) * | 1988-08-05 | 1990-02-16 | Showa Alum Corp | Seamless rim of autobicycle or the like using al-zn-mg-cu alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028019B2 (en) | 1990-02-22 |
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