Micro mechanism of transition from plasticity to brittleness of metallic glass
| Project/Area Number |
20560645
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Yamagata University |
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Principal Investigator |
NASU Toshio Yamagata University, 地域教育文化学部, 教授 (00083436)
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| Co-Investigator(Kenkyū-buntansha) |
USUKI Takeshi 山形大学, 理学部, 教授 (70250909)
張 偉 東北大学, 金属材料研究所, 准教授 (20400400)
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| Co-Investigator(Renkei-kenkyūsha) |
ZHANG Wei 東北大学, 金属材料研究所, 准教授 (20400400)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2010: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 金属ガラス / 延性 / 脆性 / 原子構造 / EXAFS / 高エネルギーX-線回折 / ガラス形成能 / 延性-脆性転移 / 高エネルギーX-線回折実験 / Reverse Monte Carloシミュレーション / 組成依存性 / 短範囲構造 / 中・長距離構造 |
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| Research Abstract |
The micro-mechanism of glass forming ability (GFA) and the transition from plasticity to brittleness of CuZr metallic glass with the amount of AlAg addition were researched by XAFS and high-energy x-ray diffraction methods. The solute atoms of Al and Ag are not arranged uniformly in the CuZr matrix. It means that the atomic pairs of Al-Al, Ag-Ag and Al-Ag observed more often than average distribution supposed from the alloy composition. It suggests that this inhomogeneity of solute atoms in CuZr matrix affects GFA and the change from plasticity to brittleness of CuZr based bulk metallic glass.
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Report
(4 results)
Research Products
(18 results)
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[Journal Article] Inhomogeneity and glassforming ability in the bulk metallic glass Pd42.5Ni7.5Cu30P20 as seen via x-ray spectroscopies2009
Author(s)
S.Hosokawa, H.Sato, T.Ichitsubo, M.Nakatake, N.Happo, J.F.Berar, N.Boudet, T.Usuki, X.C.Pilgrim, E.Matsubara, N.Nishiyama
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Journal Title
Physical Review B 80
Pages: 174204-174204
Related Report
Peer Reviewed
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