JPH01100234A - Heat-resistant aluminum alloy and its manufacture - Google Patents

Heat-resistant aluminum alloy and its manufacture

Info

Publication number
JPH01100234A
JPH01100234A JP62256686A JP25668687A JPH01100234A JP H01100234 A JPH01100234 A JP H01100234A JP 62256686 A JP62256686 A JP 62256686A JP 25668687 A JP25668687 A JP 25668687A JP H01100234 A JPH01100234 A JP H01100234A
Authority
JP
Japan
Prior art keywords
weight
aluminum alloy
alloy powder
heat
alloy
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.)
Pending
Application number
JP62256686A
Other languages
Japanese (ja)
Inventor
Yusuke Kotani
雄介 小谷
Yoshinobu Takeda
義信 武田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ALUM FUNMATSU YAKIN GIJUTSU KENKYU KUMIAI
Original Assignee
ALUM FUNMATSU YAKIN GIJUTSU KENKYU KUMIAI
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ALUM FUNMATSU YAKIN GIJUTSU KENKYU KUMIAI filed Critical ALUM FUNMATSU YAKIN GIJUTSU KENKYU KUMIAI
Priority to JP62256686A priority Critical patent/JPH01100234A/en
Priority to EP88908986A priority patent/EP0336981B1/en
Priority to DE3887503T priority patent/DE3887503T2/en
Priority to PCT/JP1988/001037 priority patent/WO1989003435A1/en
Publication of JPH01100234A publication Critical patent/JPH01100234A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0408—Light metal alloys
    • C22C1/0416—Aluminium-based alloys

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

PURPOSE:To obtain the titled Al alloy having excellent tensile strength at a high temp. by solidifying and molding Al alloy powder consisting of specific compsn. of Fe, Mo, Cr, Zr, V and Al and produced by a molten metal atomizing method. CONSTITUTION:The Al alloy powder consisting of, by weight, 5-10% Fe, 0.5-3% Mo, at least one kind among each 0.5-3% Cr, Zr and V and the balance consisting of Al as well as satisfying 6-16% Fe+Mo+Cr+Zr+V is manufactured by a molten metal atomizing method, when the cooling rate of said Al alloy powder at the time of solidifying is preferably regulated to >=10<2> deg.C/sec. The Al alloy powder obtd. by this method is solidified and molded at 400-580 deg.C by an extrusion method, etc. In this way, the titled Al alloy having >=26kg/mm<2> tensile strength even at the high temp. of 300 deg.C as well as having excellent room temp. strength is obtd.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、自動車エンジン部品や航空機部品などに用い
る耐熱性のアルミニウム合金及びその製造方法に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat-resistant aluminum alloy used for automobile engine parts, aircraft parts, etc., and a method for producing the same.

〔従来の技術〕[Conventional technology]

耐熱性アルミニウム合金としては、従来から一般に２２
１８　、２２１９　、２６１８等の合金が知られている
。しかし、最近の技術進歩に対応して、更に高い耐熱性
が要求されるようになっている。As a heat-resistant aluminum alloy, 22
Alloys such as 18, 2219 and 2618 are known. However, in response to recent technological advances, even higher heat resistance is required.

そこで、高耐熱性のアルミニウム合金を得るために、最
近ではＵＳＰ３，４６２，２４８、ＵＳＰ４，３４７．
０７６及びＵ　Ｓ　Ｐ　４，３７９，７１９等に開示さ
れるとと（、従来アルミニウム合金の特性を劣化させる
として嫌われていた鉄などの遷移金属を多量に添加して
、高温強度を改善する試みが行われている。Therefore, in order to obtain highly heat-resistant aluminum alloys, recently USP 3,462,248, USP 4,347.
076 and U.S.P. 4,379,719 (an attempt to improve high-temperature strength by adding large amounts of transition metals such as iron, which were conventionally disliked as degrading the properties of aluminum alloys). is being carried out.

この種のアルミニウム合金は鉄などの遷移金属を多量に
含むため、当然のことながら該当する組成の合金粉末を
溶湯アトマイズ法により製造し、この合金粉末を粉末冶
金法に従って固化成形させる方法によって製造される。Since this type of aluminum alloy contains a large amount of transition metals such as iron, it is natural that the alloy powder of the corresponding composition is produced by the molten metal atomization method, and then the alloy powder is solidified and molded according to the powder metallurgy method. Ru.

実際、この種のアルミニウム合金はＡｄｖａｎｃｅｄｉ
ｎ　Ｐｏｗｄｅｒ　Ｔｅｃｈｎｏｌｏｇｙ”の内のＡｄ
ｖａｎｃｅｄ　Ｐ／ＭＡｌｕｍｉｎｕｍ　Ａ１１ｏｙｓ
”、　Ｐ２１３〜２１４．１９８１　ＡＳＭＭａｔｅｒ
ｉａｌｓ　５ｃｉｅｎｃｅ　Ｓｅｍ１ｎｏｒ　、　　Ａ
ＭＥＲＩＣＡＮＳＯＣＩＥＴＹ　ＦＯＲＭＥ’ＴＡＬＳ
発行、に報告されているように耐熱性が改善され、３０
０Ｃでの引張強度が約３０に、ｙ／−のものまで発表さ
れているが、再現性よく製造することができず、実用化
には至っていないのが現状である。In fact, this kind of aluminum alloy is Advanced
n Powder Technology”
vanced P/MAluminum A11oys
”, P213-214.1981 ASMMater
ials 5science Sem1nor, A
MERICANSOCIETY FORME'TALS
The heat resistance has been improved as reported in the publication, 30
Although it has been announced that the tensile strength at 0C is about 30 and y/-, it cannot be manufactured with good reproducibility and has not been put to practical use yet.

航空機用エンジン部品や、ガスタービへ４ジンのエンペ
ラ−、エンジンピストン等の様に高温にさらされる部品
では、現在３００ｔ：’で２５ｋｇ／ｍｍ２以上の引張
強さ、さらに好ましくは３０ｋｇ／ｍｍ２をこえる引張
強度が要求されてお％であり、今までに開発された耐熱
性アルミニウム合金ではこの要求を満足することが出来
なかった。Parts exposed to high temperatures, such as aircraft engine parts, gas turbine engine propellers, engine pistons, etc., currently have a tensile strength of 25 kg/mm2 or more at 300 tons, and preferably more than 30 kg/mm2. %, and the heat-resistant aluminum alloys developed to date have not been able to satisfy this requirement.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

本発明は、かかる従来の事情に鑑み、優れた室温強度に
加えて、３００Ｃの高温でも２６ｋｇ／ｍｍ２をこえる
引張強度を有する耐熱性アルミニウム合金を提供するこ
とを目的とするものである。In view of the conventional circumstances, the present invention aims to provide a heat-resistant aluminum alloy having not only excellent room temperature strength but also a tensile strength exceeding 26 kg/mm2 even at a high temperature of 300C.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の耐熱性アルミニウム合金は、鉄５〜１０重量％
、モリブデン０．５〜３重量％、クロム、ジルコニウム
及び・々ナジウムの少なくとも１種を１元素当り０．５
〜３重量％含み、鉄、モリブデン。The heat-resistant aluminum alloy of the present invention has an iron content of 5 to 10% by weight.
, 0.5 to 3% by weight of molybdenum, and 0.5% of at least one of chromium, zirconium, and sodium per element.
Contains ~3% by weight, iron and molybdenum.

りｃｘム、ジルコニウム及びノ９ナジウムの合計が６〜
１６重景％重量％であり、残部が実質的にアルミニウム
であって、３００Ｃにおける引張強度が２６１ｇ／＋ｊ
以上であることを特徴としている。The sum of ricium, zirconium and sodium is 6~
16% by weight, the remainder is substantially aluminum, and the tensile strength at 300C is 261g/+j
It is characterized by the above.

かかる耐熱性アルミニウム合金は、５〜１０重景％重量
と、０．５〜３重量％のモリブデンと、１元素当り０．
５〜３重量％のクロム、ジルコニウム及び・々ナジウム
の少なくとも１種と、残部のアルミニウムとからなり、
鉄、モリブデン、クロム。Such heat-resistant aluminum alloys contain 5 to 10 weight percent molybdenum, 0.5 to 3 weight percent molybdenum, and 0.5 weight percent molybdenum per element.
Consisting of 5 to 3% by weight of at least one of chromium, zirconium and sodium, the balance being aluminum,
Iron, molybdenum, chromium.

ジルコニウム及びバナジウムの合計が６〜１６重量％で
あるアルミニウム合金粉末を溶湯アトマイズ法により製
造し、このアルミニウム合金粉末を４００〜５８０Ｃの
温度にて固化成形する方法によって製造することができ
る。It can be manufactured by a method in which an aluminum alloy powder containing 6 to 16% by weight of zirconium and vanadium in total is manufactured by a molten metal atomization method, and this aluminum alloy powder is solidified and formed at a temperature of 400 to 580C.

ここで溶湯アトマイズ法とは、所定の合金組成の金属溶
湯を噴霧して急速に凝固させる全ての方法を含み、例え
ばエアーアトマイズ法、ガスアトマイズ法、遠心アトマ
イズ法２回転ロールアトマイズ法などがある。The molten metal atomization method herein includes all methods in which a molten metal of a predetermined alloy composition is sprayed and rapidly solidified, such as air atomization, gas atomization, centrifugal atomization, two-rotation roll atomization, and the like.

又、アルミニウム合金粉末を粉末冶金法に従って固化成
形する方法としては、押出、鍛造、ホットプレス法、Ｈ
ＩＰ法などがある。In addition, methods for solidifying and molding aluminum alloy powder according to powder metallurgy include extrusion, forging, hot pressing, and H
There are IP laws, etc.

〔作用〕[Effect]

前記したごとく、従来の耐熱性アルミニウム合金の耐熱
性改善の考え方は、ＡβにＦｅなどの遷移金属元素を添
加してマトリックス強化に寄与すると共に熱的に安定な
金属間化合物を生成せしめると云うものである。As mentioned above, the conventional approach to improving the heat resistance of heat-resistant aluminum alloys is to add transition metal elements such as Fe to Aβ to contribute to matrix reinforcement and to generate thermally stable intermetallic compounds. It is.

しかし、本発明者等の研究によれば、遷移金属のなかに
はへρ合金の強度を改善する効果を有する元素と、熱的
安定性の維持改善に効果のある元素とがあわ、この２種
類の元素を組合わせることによシー層高い耐熱性が達成
されることが分った。However, according to research conducted by the present inventors, there are elements among transition metals that have the effect of improving the strength of ρ alloys, and elements that are effective in maintaining and improving thermal stability. It has been found that high heat resistance of the sea layer can be achieved by combining elements.

Ａｎへの添加元素のうち、Ｆｅは遷移金属元素中で強度
、耐熱性とも最も高いものであることは一般的に知られ
ている。このＦｅはマトリックス中に分散され、マトリ
ックスの強度を向上させるＡ（！３Ｆｅ化合物を形成す
る。この金属間化合物は耐熱性が高いため合金の高温強
度を改善する効果がある。It is generally known that among the elements added to An, Fe has the highest strength and heat resistance among the transition metal elements. This Fe is dispersed in the matrix and forms an A(!3Fe compound that improves the strength of the matrix. This intermetallic compound has high heat resistance, so it has the effect of improving the high temperature strength of the alloy.

Ｍｏは合金強度を改善する効果を有するもので、ＡＲ−
Ｆｅ　−Ｍｏ系の化合物を生成し、これがマトリックス
中に均一に分散することによシ強度を改善し、更にマト
リックスを強化して合金の耐熱性改善に寄与する。Mo has the effect of improving alloy strength, and AR-
A Fe-Mo based compound is produced and uniformly dispersed in the matrix, thereby improving the strength, further strengthening the matrix, and contributing to improving the heat resistance of the alloy.

更に熱的安定性を向上させるために、クロム。Chromium to further improve thermal stability.

ジルコニウム又は・々ナジウムを添加する。これらの元
素は主に結晶粒界に析出して高温での結晶粒の粗大化及
びＡＱ　−Ｆｅ　−Ｍｏ系分散物の粗大化を妨げること
により、高温強度を著しく改善する。Add zirconium or sodium. These elements precipitate mainly at grain boundaries and prevent coarsening of crystal grains and coarsening of the AQ-Fe-Mo-based dispersion at high temperatures, thereby significantly improving high-temperature strength.

これら添加元素の含有量は前記の通りであ％であり、い
ずれかの含有量が所定の範囲よシ少ない場合には、合金
の強化並びに耐熱性の改善が充分ではない。又、所定の
範囲をこえると強度や耐熱性の改善効果は大きくなるが
、塑性加工が難しくなるうえ、靭性及び伸びが著しく低
下して製品として用いることが出来なくなる。The content of these additional elements is as described above in %, and if the content of any one of them is less than the predetermined range, the strengthening of the alloy and the improvement in heat resistance will not be sufficient. Moreover, when the content exceeds a predetermined range, the effect of improving strength and heat resistance becomes large, but not only does plastic working become difficult, but the toughness and elongation decrease significantly, making it impossible to use the product as a product.

尚、溶湯アトマイズ法により製造したアルミニウム合金
粉末は、鋳造材に比較して微細均一で偏析も少ない。し
かし、凝固時の冷却速度が１Ｏ２Ｃ／章未満の場合には
、Ｆｅ、Ｍｏ、　Ｖ、　Ｚｒ　、　Ｃｒ等の添加元素が
偏析し、微細均一な組織でなくなるため、塑性加工によ
る固化成形が困難となる。又、固化成形が可能であって
も、強度や伸びの低下を招くので好ましくない。Note that the aluminum alloy powder produced by the molten metal atomization method is finer, more uniform, and has less segregation than cast material. However, if the cooling rate during solidification is less than 1O2C/chapter, additional elements such as Fe, Mo, V, Zr, and Cr will segregate and the microstructure will no longer be uniform, making solidification forming by plastic working difficult. Become. Further, even if solidification molding is possible, it is not preferable because it causes a decrease in strength and elongation.

かかるアルミニウム合金粉末を熱間塑性加工して固化成
形するための温度は、４００Ｃ未満では粉末の変形抵抗
が高（、充分な強度をもつ合金が得られす、５８０Ｃを
こえると析出物や結晶粒の粗大化が生じ、充分な高温強
度が得られない。The temperature for hot plastic working and solidification of such aluminum alloy powder is such that if the temperature is less than 400C, the deformation resistance of the powder will be high (an alloy with sufficient strength will be obtained; if it exceeds 580C, precipitates and crystal grains will be formed). coarsening occurs, and sufficient high-temperature strength cannot be obtained.

〔実施例〕〔Example〕

エアーアトマイズ法により、下記第１表に示す１００メ
ツシユ以下のＡ１！合金粉末を製造し、同じく第１表に
示す加工法及び温度にて熱間塑性加工を行ってＡ９合金
を製造した。尚、押出の場合は、押出比１３で直径２１
　ＩＩＩに押出した。By the air atomization method, A1 of 100 meshes or less as shown in Table 1 below! Alloy powder was produced, and hot plastic working was performed using the same processing method and temperature shown in Table 1 to produce A9 alloy. In the case of extrusion, the extrusion ratio is 13 and the diameter is 21.
It was extruded to III.

第１表 （註）表中の＊印は比較例を表わす 得られた各Ａ４合金について、室温での引張強度及び３
００Ｃでの引張強度を測定し、結果を第２表に示した。Table 1 (Note) The * mark in the table represents a comparative example.The tensile strength at room temperature and the
The tensile strength at 00C was measured and the results are shown in Table 2.

尚、３００Ｃでの引張強度は３００Ｃにて１００時間保
持した後、３００Ｃにて測定した。The tensile strength at 300C was measured at 300C after being held at 300C for 100 hours.

第２表 （註）表中の＊印は比較例を表わす 又、試料１５はＡ！−８Ｆｅ−３，４Ｃｅ及び試料１６
はＡｇＡｇ−８Ｆｅ−２であり、共にＡｄｖａｎｃｅｄ
　Ｐ／Ｍ　Ａｌｕｍｉｎｕｍ　Ａ１１ｏｙｓ　Ｐ２１：
３〜２１４から従来例として採用した。Table 2 (Note) The * mark in the table represents a comparative example. Sample 15 is A! -8Fe-3,4Ce and sample 16
are AgAg-8Fe-2, and both are Advanced
P/M Aluminum A11oys P21:
No. 3 to No. 214 were adopted as conventional examples.

本発明方法の実施例による試料の引張強度はいずれも室
温で５０ｋｆ／−以上で、且つ３００Ｃにおいても２０
ｋｌｉ／−をこえ、優れた高温強度を有していることが
わかる。これに対して比較例は全て特に高温強度が劣り
、試料８は強度的には優れるが塑性加工性が悪く、且つ
伸びが極度に小さいので製品とすることが不可能である
。The tensile strength of the samples according to the embodiments of the method of the present invention is 50 kf/- or more at room temperature and 20 kf/- even at 300 C.
It can be seen that it has excellent high temperature strength exceeding kli/-. On the other hand, all of the comparative examples are particularly poor in high-temperature strength, and Sample 8 has excellent strength but poor plastic workability and extremely low elongation, making it impossible to use it as a product.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、室温強度と共に３００Ｃにおいても２
６に＃／−をこえる優れた高温強度を有する耐熱性アル
ミニウム合金を提供することができる。According to the present invention, not only the room temperature strength but also the 2
It is possible to provide a heat-resistant aluminum alloy having excellent high-temperature strength exceeding #6.

従って、この耐熱性アルミニウム合金は、自動車エンジ
ン部品、航空機部品、ガスタービンエンジンなどの従来
Ｆｅ系合金やＮｉ系合金を用いていた分野に利用するこ
とによ％であり、軽量化及び高効率化などに大きな効果
を発揮することができる。Therefore, this heat-resistant aluminum alloy can be used in fields where conventionally Fe-based alloys and Ni-based alloys have been used, such as automobile engine parts, aircraft parts, and gas turbine engines. It can have a great effect on things like that.

Claims (3)

【特許請求の範囲】[Claims] （１）鉄５〜１０重量％、モリブデン０．５〜３重量％
、クロム、ジルコニウム及びバナジウムの少なくとも１
種を１元素当り０．５〜３重量％含み、鉄、モリブデン
、クロム、ジルコニウム及びバナジウムの合計が６〜１
６重量％であり、残部が実質的にアルミニウムであつて
、３００℃における引張強度が２６ｋｇ／ｍｍ＾２以上
であることを特徴とする耐熱性アルミニウム合金。(1) Iron 5-10% by weight, molybdenum 0.5-3% by weight
, chromium, zirconium and vanadium.
Contains 0.5 to 3% by weight of seeds per element, and the total of iron, molybdenum, chromium, zirconium and vanadium is 6 to 1
6% by weight, the remainder being substantially aluminum, and having a tensile strength at 300° C. of 26 kg/mm^2 or more. （２）５〜１０重量％の鉄と、０．５〜３重量％のモリ
ブデンと、１元素当り０．５〜３重量％のクロム、ジル
コニウム及びバナジウムの少なくとも１種と、残部のア
ルミニウムとからなり、鉄、モリブデン、クロム、ジル
コニウム及びバナジウムの合計が６〜１６重量％である
アルミニウム合金粉末を溶湯アトマイズ法により製造し
、このアルミニウム合金粉末を４００〜５８０℃の温度
にて固化成形することを特徴とする耐熱性アルミニウム
合金の製造方法。(2) 5 to 10% by weight of iron, 0.5 to 3% by weight of molybdenum, 0.5 to 3% by weight of at least one of chromium, zirconium, and vanadium per element, and the balance aluminum. Therefore, an aluminum alloy powder containing 6 to 16% by weight of iron, molybdenum, chromium, zirconium, and vanadium in total is produced by a molten metal atomization method, and this aluminum alloy powder is solidified and formed at a temperature of 400 to 580°C. A method for producing a heat-resistant aluminum alloy. （３）アルミニウム合金粉末の凝固時の冷却速度が１０
＾２℃／ｓｅｃ以上であることを特徴とする、特許請求
の範囲（２）項記載の耐熱性アルミニウム合金の製造方
法。(3) The cooling rate during solidification of aluminum alloy powder is 10
The method for producing a heat-resistant aluminum alloy according to claim (2), characterized in that the temperature is ^2°C/sec or more.
JP62256686A 1987-10-12 1987-10-12 Heat-resistant aluminum alloy and its manufacture Pending JPH01100234A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP62256686A JPH01100234A (en) 1987-10-12 1987-10-12 Heat-resistant aluminum alloy and its manufacture
EP88908986A EP0336981B1 (en) 1987-10-12 1988-10-12 Heat-resistant aluminum alloy and process for its production
DE3887503T DE3887503T2 (en) 1987-10-12 1988-10-12 HEAT-RESISTANT ALUMINUM ALLOY AND METHOD FOR PRODUCING THE SAME.
PCT/JP1988/001037 WO1989003435A1 (en) 1987-10-12 1988-10-12 Heat-resistant aluminum alloy and process for its production

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CN109487124A (en) * 2018-11-30 2019-03-19 西安工业大学 Aluminium-based wear-resisting material and preparation method thereof under a kind of sour corrosion operating condition

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DE102018127401A1 (en) * 2018-11-02 2020-05-07 AM Metals GmbH High-strength aluminum alloys for the additive manufacturing of three-dimensional objects

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JPS57116741A (en) * 1980-11-24 1982-07-20 United Technologies Corp Reinforced aluminum alloy and production thereof
JPS60234936A (en) * 1984-05-09 1985-11-21 Sumitomo Light Metal Ind Ltd Formed material with superior strength at high temperature made of material of aluminum alloy solidified by rapid
JPS62250145A (en) * 1986-04-23 1987-10-31 Toyo Alum Kk Heat-resisting aluminum powder metallurgical alloy and its production

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JPS57116741A (en) * 1980-11-24 1982-07-20 United Technologies Corp Reinforced aluminum alloy and production thereof
JPS60234936A (en) * 1984-05-09 1985-11-21 Sumitomo Light Metal Ind Ltd Formed material with superior strength at high temperature made of material of aluminum alloy solidified by rapid
JPS62250145A (en) * 1986-04-23 1987-10-31 Toyo Alum Kk Heat-resisting aluminum powder metallurgical alloy and its production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109487124A (en) * 2018-11-30 2019-03-19 西安工业大学 Aluminium-based wear-resisting material and preparation method thereof under a kind of sour corrosion operating condition

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DE3887503T2 (en) 1994-06-30
EP0336981A4 (en) 1990-02-06
EP0336981A1 (en) 1989-10-18
WO1989003435A1 (en) 1989-04-20
EP0336981B1 (en) 1994-01-26
DE3887503D1 (en) 1994-03-10

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