Improvement of fatigue resistance in high conductivity copper alloysby microstructural control
Project/Area Number |
22560690
|
Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Structural/Functional materials
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Research Institution | Tokyo Institute of Technology |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
ONAKA Susumu 東京工業大学, 大学院・総合理工学研究科, 教授 (40194576)
KATO Masaharu 東京工業大学, 大学院・総合理工学研究科, 教授 (50161120)
|
Project Period (FY) |
2010 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
Keywords | 疲労 / 繰り返し変形 / 析出強化型合金 / 銅合金 / 導電性材料 / 析出粒子 / 不均一 変形 / 電気・電子材料 / 金属疲労 / 材料組織 / 転位 / 電子・電気材料 / 銅合金単結晶 / 繰り返し軟化 |
Research Abstract |
To reveal cyclic softening behavior in high conductivity copper alloys, plastic strain amplitude controlled fatigue tests were conducted. The macroscopic cyclic softening can be attributed to the local deformation induced by the shear and re-dissolution of the precipitate particles in the persistent slip bands. We concluded that the dispersion of non-shearable particles is a key factor to improve fatigue resistance of the copper alloys.
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Report
(4 results)
Research Products
(31 results)
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[Patent(Industrial Property Rights)] 銅合金粉末,銅合金焼結体および高速鉄道用ブレーキライニング2013
Inventor(s)
香月太,石本史雄,神田修,阿佐部和孝,安達豪,藤居俊之
Industrial Property Rights Holder
香月太,石本史雄,神田修,阿佐部和孝,安達豪,藤居俊之
Industrial Property Number
2013-061381
Filing Date
2013-03-25
Related Report
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