JP2001181769A5 - - Google Patents
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- JP2001181769A5 JP2001181769A5 JP1999369217A JP36921799A JP2001181769A5 JP 2001181769 A5 JP2001181769 A5 JP 2001181769A5 JP 1999369217 A JP1999369217 A JP 1999369217A JP 36921799 A JP36921799 A JP 36921799A JP 2001181769 A5 JP2001181769 A5 JP 2001181769A5
- Authority
- JP
- Japan
- Prior art keywords
- aluminum alloy
- engine piston
- eutectic
- less
- piston according
- 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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- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 230000005496 eutectics Effects 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 1
- 230000005712 crystallization Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching Effects 0.000 description 1
Description
【特許請求の範囲】
【請求項１】 Ｓｉ：８．０〜１２．０wt％、Ｃｕ：８．０〜１２．０wt％およびＭｇ：０．１〜２．０wt％を含み、残部Ａｌおよび不純物からなり、共晶Ｓｉの平均粒径が５０μｍ以下であり、さらに共晶ＳｉおよびＣｕ系晶出物を合計４０％以下の面積率で含有することを特徴とするエンジンピストン用アルミニウム合金材。
【請求項２】 前記共晶Ｓｉの平均粒径が１０μｍ以下である請求項１に記載のエンジンピストン用アルミニウム合金材。
【請求項３】 前記共晶ＳｉおよびＣｕ系晶出物の合計の面積率が３５％以下である請求項１または２に記載のエンジンピストン用アルミニウム合金材。
【請求項４】 Ｓｉ：８．０〜１２．０wt％、Ｃｕ：８．０〜１２．０wt％およびＭｇ：０．１〜２．０wt％を含み、残部Ａｌおよび不純物からなるアルミニウム合金を所要形状に成形し、４９０〜５００℃で２〜４時間溶体化処理後焼入れし、さらに１７０〜２２０℃で２時間以上の時効処理を施すことを特徴とするアルミニウム合金製エンジンピストンの製造方法。
【請求項５】 前記溶体化処理温度が４９５〜５００℃である請求項４に記載のアルミニウム合金製エンジンピストンの製造方法。
【請求項６】 前記時効処理温度が１８０〜２００℃である請求項４または５に記載のアルミニウム合金製エンジンピストンの製造方法。
[Claims]
1. A eutectic Si containing 8.0 to 12.0 wt% of Si, 8.0 to 12.0 wt% of Cu and 0.1 to 2.0 wt% of Mg, the balance being Al and impurities. An aluminum alloy material for engine pistons, characterized by having an average particle size of 50 μm or less and further containing eutectic Si and Cu-based crystallization at a total area ratio of 40% or less.
(2) The aluminum alloy material for an engine piston according to claim 1, wherein the eutectic Si has an average particle size of 10 µm or less.
(3) The aluminum alloy material for an engine piston according to claim 1 or 2, wherein a total area ratio of the eutectic Si and Cu-based crystallized products is 35% or less.
(4) An aluminum alloy containing 8.0 to 12.0 wt% of Si, 8.0 to 12.0 wt% of Cu and 0.1 to 2.0 wt% of Mg, and remaining Al and impurities is formed into a required shape, A method for manufacturing an aluminum alloy engine piston, comprising: quenching after solution treatment at 490 to 500 ° C. for 2 to 4 hours, and further aging at 170 to 220 ° C. for 2 hours or more.
(5) The method for producing an aluminum alloy engine piston according to claim 4, wherein the solution treatment temperature is 495 to 500C.
6. The method for producing an aluminum alloy engine piston according to claim 4 or 5, wherein the aging treatment temperature is 180 to 200 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36921799A JP4253414B2 (en) | 1999-12-27 | 1999-12-27 | Aluminum alloy material for engine piston and method of manufacturing aluminum alloy automobile engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36921799A JP4253414B2 (en) | 1999-12-27 | 1999-12-27 | Aluminum alloy material for engine piston and method of manufacturing aluminum alloy automobile engine piston |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001181769A JP2001181769A (en) | 2001-07-03 |
| JP2001181769A5 true JP2001181769A5 (en) | 2007-02-15 |
| JP4253414B2 JP4253414B2 (en) | 2009-04-15 |
Family
ID=18493877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36921799A Expired - Fee Related JP4253414B2 (en) | 1999-12-27 | 1999-12-27 | Aluminum alloy material for engine piston and method of manufacturing aluminum alloy automobile engine piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4253414B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005065004A2 (en) * | 2004-01-12 | 2005-07-21 | Ks Kolbenschmidt Gmbh | Heat-resistant aluminium-silicon piston alloy |
| CN101082115B (en) * | 2007-05-25 | 2010-05-19 | 中南大学 | Treatment method for providing aluminum alloy with high thermal stability anti-fatigue microstructure |
| US20120100385A1 (en) | 2009-07-03 | 2012-04-26 | Showa Denko K.K. | Process for production of roughly shaped material for engine piston |
| CN111893408A (en) * | 2020-07-24 | 2020-11-06 | 东风(十堰)有色铸件有限公司 | Process for improving dimensional stability of die casting |
-
1999
- 1999-12-27 JP JP36921799A patent/JP4253414B2/en not_active Expired - Fee Related
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