JPH08157996A - High strength aluminum alloy excellent in heat resistance - Google Patents

High strength aluminum alloy excellent in heat resistance

Info

Publication number
JPH08157996A
JPH08157996A JP33061394A JP33061394A JPH08157996A JP H08157996 A JPH08157996 A JP H08157996A JP 33061394 A JP33061394 A JP 33061394A JP 33061394 A JP33061394 A JP 33061394A JP H08157996 A JPH08157996 A JP H08157996A
Authority
JP
Japan
Prior art keywords
strength
alloy
content
exceeds
present
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
JP33061394A
Other languages
Japanese (ja)
Inventor
Soichi Sasada
総一 笹田
Koichi Ohori
紘一 大堀
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.)
MA Aluminum Corp
Original Assignee
Mitsubishi Aluminum Co Ltd
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 Mitsubishi Aluminum Co Ltd filed Critical Mitsubishi Aluminum Co Ltd
Priority to JP33061394A priority Critical patent/JPH08157996A/en
Publication of JPH08157996A publication Critical patent/JPH08157996A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To produce a heat resistant Al alloy having excellent high temp. strength over a wide temp. range by specifying the chemical composition of an Al alloy. CONSTITUTION: This Al alloy has a composition consisting of, by weight, 5.0-7.0% Cu, 0.2-0.6% Mg, 0.15-0.6% Mn, 0.05-0.25% Zr, >0.15-0.25% V, <=0.25% Si, <=0.40% Fe, 0.01-0.05% Ti, and the balance Al and has excellent strength over the temp. region between ordinary temp. and 200 deg.C. As to Cu content, strength is insufficient when it is below the lower limit, and, when it exceeds the upper limit, workability is deteriorated. When Mg content is below the lower limit, strength is insufficient, and, when it exceeds the upper limit, a strength-improving effect is reduced. When Mn is below the lower limit, a strength-improving effect is reduced, and strength is deteriorated when it exceeds the upper limit. Sufficient strength cannot be obtained when Zr is below the lower limit or V is <=0.15%, and, when either of Zr and V exceeds the upper limit, strength is deteriorated. Silicon and Fe are contaminating impurities, and, when they exceeds the upper limits, the strength-improving effect of Cu is inhibited. When Ti is below the lower limit, the effect of stabilizing mechanical properties is reduced, and, when it exceeds the upper limit, workability is deteriorated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、耐熱性に優れた高強
度アルミニウム合金に関し、特に高温雰囲気において用
いられるエンジンやコンプレッサ−等の部品の材料に適
するアルミニウム合金に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-strength aluminum alloy having excellent heat resistance, and particularly to an aluminum alloy suitable as a material for parts such as engines and compressors used in a high temperature atmosphere.

【0002】[0002]

【従来の技術】従来、コンロッド等のエンジン部品、コ
ンプレッサ−等の部品には、鉄系の材料が使用されてい
たが、それら材料の軽量化は、高出力、燃料効率の向
上、低騒音化および低振動への寄与が大きいことから、
最近それら部品の軽量化に対する要望が強くなってい
る。これらの部品を軽量化するために、軽量で且つ高強
度のアルミニウム合金が有望視されており、その使用が
検討されている。
2. Description of the Related Art Conventionally, iron-based materials have been used in engine parts such as connecting rods and parts such as compressors. However, the weight reduction of these materials leads to high output, improved fuel efficiency, and low noise. And a large contribution to low vibration,
Recently, there has been a strong demand for reducing the weight of these parts. In order to reduce the weight of these parts, a lightweight and high-strength aluminum alloy is considered promising and its use is being studied.

【0003】ところで、これらの部材は、常温から20
0℃までの比較的広い温度範囲で使用されることが多
く、常温及び高温における強度が高いことが必要とされ
る。従来の高強度アルミニウム合金には、7075合金
等のAl−Zn−Mg系合金がある。しかし、これらの
アルミニウム合金は高温で長時間保持されると、強度が
著しく低下するという欠点がある。一方、従来の耐熱ア
ルミニウム合金には、2618合金および2219合金
等がある。しかし、これらの材料の高温強度も未だ不十
分である。
By the way, these components are kept at room temperature to 20 ° C.
It is often used in a relatively wide temperature range up to 0 ° C, and high strength at room temperature and high temperature is required. Conventional high-strength aluminum alloys include Al-Zn-Mg-based alloys such as 7075 alloy. However, these aluminum alloys have a drawback that their strength remarkably decreases when they are held at high temperature for a long time. On the other hand, conventional heat-resistant aluminum alloys include 2618 alloy and 2219 alloy. However, the high temperature strength of these materials is still insufficient.

【0004】[0004]

【発明が解決しようとする課題】しかし、従来技術は、
高温で長時間保持すると強度が低下し、高温強度が未だ
十分ではないという問題を有している。従って、本発明
の目的は、上述した問題点を解決し、常温から200℃
までの広い温度範囲において、従来の耐熱アルミニウム
合金よりも優れた高温強度を有する耐熱アルミニウム合
金を提供することにある。
However, the prior art is
When it is kept at a high temperature for a long time, the strength is lowered and there is a problem that the high temperature strength is still insufficient. Therefore, the object of the present invention is to solve the above-mentioned problems and to reduce the temperature from room temperature to 200 ° C.
To provide a heat-resistant aluminum alloy having a high temperature strength superior to that of a conventional heat-resistant aluminum alloy in a wide temperature range.

【0005】[0005]

【課題を解決するための手段】本発明による耐熱性に優
れた高強度アルミニウム合金は、Cu:5.0〜7.0
wt.% 、Mg:0.2〜0.6 wt.% 、Mn:0.15
〜0.6 wt.% 、Zr:0.05〜0.25 wt.% 、
V:0.15超〜0.25 wt.% 、Si:0.25 wt.
% 以下、Fe:0.40 wt.% 以下、および、Ti:
0.01〜0.05wt.% を含有し、残部がアルミニウ
ム(Al)および不可避的不純物からなることに特徴を
有するものである。
The high-strength aluminum alloy excellent in heat resistance according to the present invention is Cu: 5.0 to 7.0.
wt.%, Mg: 0.2 to 0.6 wt.%, Mn: 0.15
~ 0.6 wt.%, Zr: 0.05-0.25 wt.%,
V: over 0.15 to 0.25 wt.%, Si: 0.25 wt.
% Or less, Fe: 0.40 wt.% Or less, and Ti:
It is characterized by containing 0.01 to 0.05 wt.% And the balance being aluminum (Al) and inevitable impurities.

【0006】[0006]

【作用】以下、この発明のアルミニウム合金の化学成分
組成を上述した範囲内に限定した理由について述べる。
The reason why the chemical composition of the aluminum alloy of the present invention is limited to the above range will be described below.

【0007】(1) Cu:Cuは、析出効果により常温及
び高温強度を向上させるために必要不可欠な元素であ
る。Cuはアルミニウム合金中において、CuAl2
して析出することによりAl合金の強度を向上させる。
しかしながら、Cu含有量が、5 wt.% 未満では、上記
効果が小さく十分な強度のAl合金が得られない。一
方、Cu含有量が7 wt.% を超えると、鋳造時に巨大な
CuAl2 化合物が晶出するようになるため、押出性及
び鍛造性等の加工性が低下する。従って、Cu含有量を
5.0〜7.0 wt.% の範囲内に限定すべきである。
(1) Cu: Cu is an indispensable element for improving the normal temperature and high temperature strength by the precipitation effect. Cu improves the strength of the Al alloy by precipitating as CuAl 2 in the aluminum alloy.
However, if the Cu content is less than 5 wt.%, The above effect is small and an Al alloy having sufficient strength cannot be obtained. On the other hand, if the Cu content exceeds 7 wt.%, A huge CuAl 2 compound comes to crystallize during casting, resulting in deterioration of workability such as extrudability and forgeability. Therefore, the Cu content should be limited to the range of 5.0 to 7.0 wt.%.

【0008】(2) Mg:Mgは、Al合金のマトリック
スを固溶強化し、CuAl2 の析出を促進してAl合金
を硬化させるために有効な元素である。しかしながら、
その含有量が0.2 wt.% 未満では、上記効果が小さ
く、十分な強度が得られない。一方、Mg含有量が0.
6 wt.% を超えると、融点が低下するので、溶体化処理
温度を低くしなければならないため、逆にCuAl2
出による強度向上効果を低減させてしまう。従って、M
g含有量を0.2〜0.6 wt.% の範囲内に限定すべき
である。
(2) Mg: Mg is an element effective for solid-solution strengthening the matrix of the Al alloy and promoting the precipitation of CuAl 2 to harden the Al alloy. However,
If the content is less than 0.2 wt.%, The above effect is small and sufficient strength cannot be obtained. On the other hand, the Mg content is 0.
If it exceeds 6 wt.%, The melting point is lowered, so the solution treatment temperature must be lowered, and conversely the strength improving effect due to CuAl 2 precipitation is reduced. Therefore, M
The g content should be limited to the range of 0.2-0.6 wt.%.

【0009】(3) Mn:Mnは、Al合金を固溶強化す
ると共に、その組織を繊維組織化して強度を向上させる
効果がある。しかしながら、その含有量が0.15 wt.
% 未満では、上記効果が小さい。一方、Mn含有量が
0.6 wt.% を超えると、巨大な晶出物が発生して塑性
加工時に割れが生じ易くなり、また、材料破壊の起点と
なるため、逆に、Al合金の強度は低下する。従って、
Mn含有量を、0.15〜0.6 wt.% の範囲内に限定
すべきである。
(3) Mn: Mn has the effects of solid-solution strengthening the Al alloy and making its structure a fiber structure to improve the strength. However, its content is 0.15 wt.
If it is less than%, the above effect is small. On the other hand, when the Mn content exceeds 0.6 wt.%, Huge crystallized substances are generated, cracks are likely to occur during plastic working, and this becomes the starting point of material destruction. Strength is reduced. Therefore,
The Mn content should be limited to the range of 0.15-0.6 wt.%.

【0010】(4) Zr及びV:Zr及びVは、Al合金
の組織を繊維組織化して強度を向上させる効果がある。
また、Al3 (Zr,V)金属間化合物は、マトリック
スとの整合性を有し、共通の滑り面を有することから、
高温下においても粗大化しにくいため、高温強度の低下
を抑制する働きをする。しかしながら、Zr含有量が、
0.05 wt.%未満、または、V含有量が0.15 wt.%
以下では、上記効果が小さく、十分な強度のAl合金
が得られない。一方、Zr含有量又はV含有量の何れか
一方が0.25 wt.% を超えると、巨大な晶出物が発生
し、これが加工性を低下させる原因となるので、Al合
金の強度が低下する。従って、Zr含有量を0.05〜
0.25 wt.% の範囲内に、そして、V含有量を0.1
5超〜0.25 wt.% の範囲内に限定すべきである。
(4) Zr and V: Zr and V have an effect of improving the strength by forming the Al alloy structure into a fiber structure.
In addition, since the Al 3 (Zr, V) intermetallic compound has compatibility with the matrix and has a common sliding surface,
Since it does not easily coarsen even at high temperatures, it works to prevent the deterioration of high temperature strength. However, if the Zr content is
Less than 0.05 wt.% Or V content of 0.15 wt.%
Below, the above effect is small and an Al alloy having sufficient strength cannot be obtained. On the other hand, if either the Zr content or the V content exceeds 0.25 wt.%, A huge crystallized substance is generated, which causes the workability to be deteriorated, so that the strength of the Al alloy is deteriorated. To do. Therefore, the Zr content is 0.05 to
Within the range of 0.25 wt.% And V content of 0.1
It should be limited to the range of more than 5 to 0.25 wt.%.

【0011】(5) Si:Siは不純物として混入する不
可避的不純物の1つであり、Al合金の強度向上に有効
なCuと晶出物を形成するため、CuによるAl合金の
強度向上効果を阻害する。Si含有量が、0.25 wt.
% を超えると上記弊害が顕れる。従って、Si含有量
を、0.25 wt.% 以下に限定すべきである。
(5) Si: Si is one of the unavoidable impurities mixed in as an impurity, and forms a crystallized substance with Cu which is effective for improving the strength of the Al alloy. Inhibit. Si content is 0.25 wt.
When it exceeds%, the above-mentioned harmful effects become apparent. Therefore, the Si content should be limited to 0.25 wt.% Or less.

【0012】(6) Fe:Feは、Siと同様、不純物と
して混入する不可避的不純物の1つであり、Al合金の
強度向上に有効なCuと晶出物を形成するため、Cuに
よるAl合金の強度向上効果を阻害する。Fe含有量
が、0.40 wt.% を超えると上記弊害が顕れる。従っ
て、Fe含有量を、0.40 wt.% 以下に限定すべきで
ある。
(6) Fe: Fe is one of the unavoidable impurities mixed in as an impurity like Si, and forms a crystallized substance with Cu which is effective for improving the strength of the Al alloy. Hinders the strength improvement effect of. If the Fe content exceeds 0.40 wt.%, The above-mentioned harmful effects will appear. Therefore, the Fe content should be limited to 0.40 wt.% Or less.

【0013】(7) Ti:Tiは、鋳塊組織を微細化し、
Al合金の機械的性質を安定化させる効果を有する。し
かしながら、Ti含有量が0.01 wt.% 未満では、上
記効果を十分発揮せず、また、鋳造割れが発生し易い。
一方、Ti含有量が0.05 wt.% を超えると、Al合
金の熱間加工性が劣化する。従って、耐熱性に優れた高
強度アルミニウム合金を得るためには、Ti含有量を
0.01〜0.05 wt.% の範囲内に限定すべきであ
る。
(7) Ti: Ti refines the ingot structure,
It has the effect of stabilizing the mechanical properties of the Al alloy. However, if the Ti content is less than 0.01 wt.%, The above effects are not sufficiently exhibited, and casting cracks are likely to occur.
On the other hand, when the Ti content exceeds 0.05 wt.%, The hot workability of the Al alloy deteriorates. Therefore, in order to obtain a high strength aluminum alloy having excellent heat resistance, the Ti content should be limited to the range of 0.01 to 0.05 wt.%.

【0014】上述した化学成分組成を有する本発明のA
l合金から、従来と同様の鋳造工程によってAl合金鋳
塊を調製し、更に、従来と同様の押出、鍛造及び溶体化
処理等を含む製造工程によってAl合金材料を製造する
ことができ、これをAl合金製品の加工に供することが
できる。
A of the present invention having the above chemical composition
It is possible to prepare an Al alloy ingot from the l alloy by a casting process similar to the conventional one, and further to produce an Al alloy material by a production process including extrusion, forging, solution treatment and the like similar to the conventional one. It can be used for processing Al alloy products.

【0015】[0015]

【実施例】次に、この発明を実施例により更に説明す
る。表1に示す、本発明の範囲内の化学成分組成を有す
る本発明合金No.1〜11、及び、本発明の範囲外の化
学成分組成を有する比較用合金No.1〜10のAl合金
の各々を通常の方法で溶製し、次いで通常の鋳造法で直
径230mmの鋳塊を調製した。
EXAMPLES Next, the present invention will be further described with reference to examples. Inventive alloys No. 1 to 11 having chemical composition within the range of the present invention and Al alloys of comparative alloy No. 1 to 10 having chemical composition outside the range of the present invention shown in Table 1 Each was melted by a usual method, and then an ingot having a diameter of 230 mm was prepared by a usual casting method.

【0016】[0016]

【表1】 [Table 1]

【0017】次に、上記鋳塊に対して通常行われる範囲
内の均質化処理を施した。その後、各鋳塊を押出温度:
450℃で押出し、直径70mmの丸棒を調製した。次
に、各丸棒からJIS4号引張試験片を採取し、これ
に、T6処理(525℃で2時間の溶体化処理、水焼入
後、200℃で5時間の時効処理)を施した。このよう
にして、本発明合金から調製された供試体(以下、本発
明供試体という)、および、比較用合金から調製された
供試体(以下、比較用供試体という)について、常温強
度および高温強度の試験をした。但し、高温強度試験
は、前記引張試験片を、温度150℃で100時間保持
した場合、及び温度200℃で100時間保持した場合
について行なった。その試験結果を表2に示す。
Next, the ingot was subjected to a homogenizing treatment within the range usually performed. Then extruding each ingot:
Extrusion was carried out at 450 ° C. to prepare a round bar having a diameter of 70 mm. Then, JIS No. 4 tensile test pieces were taken from each round bar, and subjected to T6 treatment (solution treatment at 525 ° C. for 2 hours, water quenching, and then aging treatment at 200 ° C. for 5 hours). As described above, the specimen prepared from the alloy of the present invention (hereinafter referred to as the specimen of the present invention) and the specimen prepared from the comparative alloy (hereinafter referred to as the comparative specimen) have room temperature strength and high temperature. The strength was tested. However, the high temperature strength test was carried out when the tensile test piece was held at a temperature of 150 ° C. for 100 hours and when it was held at a temperature of 200 ° C. for 100 hours. Table 2 shows the test results.

【0018】[0018]

【表2】 [Table 2]

【0019】表2から、下記事項がわかる。化学成分組
成が、1つでも本発明の範囲外である比較用供試体の高
温強度は、本発明供試体のそれと比較して、すべて劣っ
ている。即ち、高温強度について、比較用供試体と内
の、No.1および2は各々、Cu含有量が本発明の範囲
外に過多および過少であるため、No.3(従来の耐熱合
金である2219合金)および4は各々、Mg含有量が
本発明の範囲外に過少および過多であるため、No.5
は、Mn含有量が本発明の範囲外に過多であるため、N
o.6は不純物としてのCrを含有しているため、No.7
は、Zr含有量が本発明の範囲外に低く且つ不純物とし
てのNiを含有しているため、No.8は、V含有量が本
発明の範囲外に高いため、No.9は、Zrが本発明の範
囲外に高いため、そして、No.10(従来の耐熱合金で
ある2618合金)は、Cu、Mn、ZrおよびVの含
有量が本発明の範囲外に低く、MgおよびFe含有量が
本発明の範囲外に高く、そして、本発明においては不可
避的不純物であるCrおよびNiを含有しているため、
いずれも本発明供試体よりも劣っている。
The following matters can be seen from Table 2. The high-temperature strength of the comparative specimens having even one chemical composition outside the scope of the present invention is inferior to that of the specimens of the present invention. That is, regarding the high temperature strength, No. 1 and No. 2 in the comparative specimen have Cu contents exceeding and below the range of the present invention, respectively. Alloys 4 and 4 have Mg contents outside and outside the range of the present invention, respectively.
Since the Mn content is too large outside the scope of the present invention, N
No. 7 because o.6 contains Cr as an impurity.
Has a low Zr content outside the range of the present invention and contains Ni as an impurity. Therefore, No. 8 has a high V content outside the range of the present invention. Since the content of Cu, Mn, Zr, and V is low outside the scope of the present invention, since the content of Cu, Mn, Zr, and V is low outside the scope of the present invention, the content of Cu and Mn is low. Is outside the scope of the present invention, and contains Cr and Ni which are inevitable impurities in the present invention,
Both are inferior to the test sample of the present invention.

【0020】これに対して、本発明供試体は、すべて、
高温強度について優れており、しかも、常温強度につい
ても従来の耐熱合金である2219合金および2618
合金よりも優れており、またその他の比較用合金と比較
しても同等以上の水準にある。
On the other hand, all the samples of the present invention are
2219 alloy and 2618, which are conventional heat-resistant alloys excellent in high temperature strength and also in room temperature strength
It is superior to alloys and is at or above the same level as other comparative alloys.

【0021】[0021]

【発明の効果】以上述べたように、本発明のAl合金に
よれば、常温強度および高温強度について、従来の耐熱
Al合金よりも優れたものが得られ、従って、エンジ
ン、コンプレッサ−等の常温から比較的高温雰囲気まで
において使用される機械類の構成部品用材料として適し
たアルミニウム合金を提供することができる、工業上有
用な効果がもたらされる。
As described above, according to the Al alloy of the present invention, it is possible to obtain a room temperature strength and a high temperature strength which are superior to those of the conventional heat resistant Al alloy, and therefore, the room temperature strength of the engine, the compressor, etc. To industrially useful effects, which can provide an aluminum alloy suitable as a material for a component of machinery used in a high temperature atmosphere to a relatively high temperature atmosphere.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 銅(Cu) :5.0〜7.0
wt.% 、 マグネシウム(Mg):0.2〜0.6 wt.% 、 マンガン(Mn) :0.15〜0.6 wt.% 、 ジルコニウム(Zr):0.05〜0.25 wt.% 、 バナジウム(V) :0.15超〜0.25 wt.% 、 シリコン(Si) :0.25 wt.% 以下、 鉄(Fe) :0.40 wt.% 以下、および、 チタン(Ti) :0.01〜0.05 wt.% を含有し、残部がアルミニウム(Al)および不可避的
不純物からなることを特徴とする、耐熱性に優れた高強
度アルミニウム合金。
1. Copper (Cu): 5.0 to 7.0
wt.%, magnesium (Mg): 0.2 to 0.6 wt.%, manganese (Mn): 0.15 to 0.6 wt.%, zirconium (Zr): 0.05 to 0.25 wt. %, Vanadium (V): more than 0.15 to 0.25 wt.%, Silicon (Si): 0.25 wt.% Or less, iron (Fe): 0.40 wt.% Or less, and titanium (Ti ): A high-strength aluminum alloy having excellent heat resistance, containing 0.01 to 0.05 wt.%, And the balance being aluminum (Al) and inevitable impurities.
JP33061394A 1994-12-07 1994-12-07 High strength aluminum alloy excellent in heat resistance Pending JPH08157996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33061394A JPH08157996A (en) 1994-12-07 1994-12-07 High strength aluminum alloy excellent in heat resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33061394A JPH08157996A (en) 1994-12-07 1994-12-07 High strength aluminum alloy excellent in heat resistance

Publications (1)

Publication Number Publication Date
JPH08157996A true JPH08157996A (en) 1996-06-18

Family

ID=18234626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33061394A Pending JPH08157996A (en) 1994-12-07 1994-12-07 High strength aluminum alloy excellent in heat resistance

Country Status (1)

Country Link
JP (1) JPH08157996A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436622C (en) * 2006-01-09 2008-11-26 中南大学 Hot processing tech. of aluminium base copper alloy tank board
JP2020066785A (en) * 2018-10-26 2020-04-30 日本軽金属株式会社 Extrusion material for impeller and method for manufacturing the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100436622C (en) * 2006-01-09 2008-11-26 中南大学 Hot processing tech. of aluminium base copper alloy tank board
JP2020066785A (en) * 2018-10-26 2020-04-30 日本軽金属株式会社 Extrusion material for impeller and method for manufacturing the same

Similar Documents

Publication Publication Date Title
JP3049767B2 (en) Ti alloy with excellent heat resistance
JP2697400B2 (en) Aluminum alloy for forging
JP6057855B2 (en) Aluminum alloy extruded material for cutting
JP3873313B2 (en) Method for producing high-strength titanium alloy
JP2011122180A (en) Extruded material of heat-resistant aluminum alloy superior in high-temperature strength and high-temperature fatigue characteristic
JP2003221636A (en) Al-Mg-Si ALUMINUM ALLOY EXTRUSION MOLDED MATERIAL SHOWING EXCELLENT RESISTANCE TO IMPACT FRACTURE
JP2009041065A (en) Titanium alloy for heat resistant member having excellent high temperature fatigue strength and creep resistance
JPH0790459A (en) Production of wear resistant aluminum alloy for extrusion and wear resistant aluminum alloy material
JPH07242976A (en) Aluminum alloy for elongation, excellent in heat resistance, and its production
JP3909543B2 (en) Aluminum alloy extruded material with excellent axial crushing properties
JPH08144003A (en) High strength aluminum alloy excellent in heat resistance
JP2021025085A (en) Al-Cu-Mg-BASED ALUMINUM ALLOY EXTRUSION MATERIAL EXCELLENT IN HIGH-TEMPERATURE FATIGUE CHARACTERISTICS
JPS6326188B2 (en)
JPH08157996A (en) High strength aluminum alloy excellent in heat resistance
JP3504917B2 (en) Aluminum-beryllium-silicon alloy for automotive engine moving parts and casing members
JPH07216487A (en) Aluminum alloy, excellent in wear resistance and heat resistance, and its production
JPH032218B2 (en)
JPH0734169A (en) Wear resistant aluminum alloy excellent in strength
JPH08144002A (en) High strenght aluminum alloy excellent in heat resistance
JPH1017975A (en) Aluminum alloy for casting
JP2686140B2 (en) Alloy for high temperature bolt and method for producing the same
JPH06212336A (en) Al alloy extruded material excellent in strength and bendability
JP7319447B1 (en) Aluminum alloy material and its manufacturing method
JPH07179977A (en) Highly heat resistant aluminum alloy and its production
JP7126915B2 (en) Aluminum alloy extruded material and its manufacturing method

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Effective date: 20040907

Free format text: JAPANESE INTERMEDIATE CODE: A131

A02 Decision of refusal

Effective date: 20050111

Free format text: JAPANESE INTERMEDIATE CODE: A02