Characterization of Plastic Flow in Two Zr-Based Bulk Metallic Glasses

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	Characterization of Plastic Flow in Two Zr-Based Bulk Metallic Glasses
	Xing DM(邢冬梅); Zhang TH(张泰华); Li WH(李维火); Wei BC(魏炳忱)
刊名	Science In China Series E-Technological Sciences
	2005
通讯作者邮箱	Zhangth@lnm.imech.ac.cn
卷号	49 期号:4 页码:414-424
ISSN号	1006-9321
通讯作者	Zhang, TH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100080, Peoples R China.
中文摘要	Plastic deformation behaviors of Zr65Al10Ni10CU15 and Zr52.5Al10Ni10Cu15Be12.5 bulk metallic glasses (BMGs) are studied by using the depth-sensing nanoindentation, microindentation and uniaxial compression. The Be-containing BMG exhibits a significantly improved overall plastic strain compared with the Be-free alloy during compressive tests. Both BMGs show a loading-rate-dependent serrated flow during nanoindentation measurements, but the Be-containing alloy exhibits a much lower critical loading rate for the disappearance of the serration than the Be-free BMG. The shear band patterns developed during plastic deformation are investigated by microindentation technique, wherein much higher shear band density is found in the Be-containing alloy than in the Be-free alloy, indicating an easier nucleation of shear bands in the former BMG. The difference in the plastic deformation behavior of the two BMGs can be explained by a free volume model.
学科主题	力学
类目[WOS]	Engineering, Multidisciplinary ; Materials Science, Multidisciplinary
研究领域[WOS]	Engineering ; Materials Science
关键词[WOS]	FREE-VOLUME MODEL ; SERRATED FLOW ; NANOINDENTATION ; TRANSITION ; ALLOYS ; LIQUID
收录类别	SCI
语种	英语
WOS记录号	WOS:000240411000005
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/17236]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Xing DM,Zhang TH,Li WH,et al. Characterization of Plastic Flow in Two Zr-Based Bulk Metallic Glasses[J]. Science In China Series E-Technological Sciences,2005,49(4):414-424.
APA	邢冬梅,张泰华,李维火,&魏炳忱.(2005).Characterization of Plastic Flow in Two Zr-Based Bulk Metallic Glasses.Science In China Series E-Technological Sciences,49(4),414-424.
MLA	邢冬梅,et al."Characterization of Plastic Flow in Two Zr-Based Bulk Metallic Glasses".Science In China Series E-Technological Sciences 49.4(2005):414-424.