2010 Fiscal Year Final Research Report
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)
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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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| 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 |
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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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[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
Peer Reviewed
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[Remarks] ホームページ等
