Deformation Morphology Underneath the Vickers Indent in Bulk Metallic Glasses

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	Deformation Morphology Underneath the Vickers Indent in Bulk Metallic Glasses
	Xing DM; Zhang TH(张泰华); Wei BC(魏炳忱)
刊名	Chinese Physics Letters
	2005
通讯作者邮箱	Zhangth@lnm.imech.ac.cn
卷号	22 期号:8 页码:1994-1997
ISSN号	0256-307X
通讯作者	Zhang, TH (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China.
中文摘要	Plastic deformation behaviour of Zr52.5Al10Ni10Cu15Be12.5 and Mg65Cu25Gd10 bulk metallic glasses (BMGs) is studied by using the depth-sensing nanoindentation and microindentation. The subsurface plastic deformation zone of the BMGs is investigated using the bonded interface technique. Both the BMGs exhibit the serrated flow depending on the loading rate in the loading process of indentation. Slow indentation rates promote more conspicuous serrations, and rapid indentations suppress the serrated flow. Mg-based BMG shows a much higher critical loading rate for the disappearance of the serration than that in Zr-based BMG. The significant difference in the shear band pattern in the subsurface plastic deformation zone is responsible for the different deformation behaviour between the two BMGs. Increase of the loading rate can lead to the increase of the density of shear bands. However, there is no distinct change in the character of shear bands at the loading rate of as high as 1000 nm/s.
学科主题	力学
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
关键词[WOS]	INSTRUMENTED INDENTATION ; AMORPHOUS METAL ; PLASTIC-FLOW ; NANOINDENTATION ; ALLOY ; TRANSITION ; FRACTURE
收录类别	SCI
语种	英语
WOS记录号	WOS:000231049100048
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/311007/17641]
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,Wei BC. Deformation Morphology Underneath the Vickers Indent in Bulk Metallic Glasses[J]. Chinese Physics Letters,2005,22(8):1994-1997.
APA	Xing DM,张泰华,&魏炳忱.(2005).Deformation Morphology Underneath the Vickers Indent in Bulk Metallic Glasses.Chinese Physics Letters,22(8),1994-1997.
MLA	Xing DM,et al."Deformation Morphology Underneath the Vickers Indent in Bulk Metallic Glasses".Chinese Physics Letters 22.8(2005):1994-1997.