Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation

doi:10.2320/matertrans.MJ200761

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	Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation
	Peng W(彭伟); Wei BC(魏炳忱); Zhang TH(张泰华); Liu Y(刘渊); Li L(李磊); Wei, B (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China.
发表期刊	MATERIALS TRANSACTIONS
	2007
卷号	48 期号:7 页码:1759-1764
ISSN	1345-9678
摘要	La64Al14(Cu,Ni)(22), La(63.1)All(5.2)(Cu,Ni)(21.7), La57.6Al17.5(Cu,Ni)(24.9), and La55Al25Cu10Ni5Co5 bulk metallic glasses (BMGs) with low glass transition temperature (T-g) were prepared by copper-mould casting method. The homologous temperature (the ratio of room temperature to T-g) of the four BMGs ranges from 0.64 to 0.73. Plastic deformation behavior of the BMGs at various loading rates was studied by nanoindentation. The results showed that the loading rate dependency of serrated flow, which is related to the nucleation and propagation of shear bands, depends strongly on the homologous temperature. The alloys with relatively high homologous temperature exhibit an increase in flow serration with increasing loading rate. whereas. the alloys with low homologous temperature exhibit prominent serrations at low rates. No distinct shear band is observed around the indents for all alloys after nanoindentation at all the studied loading rates. Alternately, shear band pattern are characterized through macro-indentation. which shows that shear band spacing decreases with the increase of the homologous temperature.
关键词	Bulk Metallic Glass Plastic Deformation Shear Band Nanoindentation
DOI	10.2320/matertrans.MJ200761
收录类别	SCI
语种	英语
WOS记录号	WOS:000248743100038
关键词[WOS]	INSTRUMENTED INDENTATION ; PLASTIC-DEFORMATION ; FLOW ; NANOINDENTATION ; ALLOY
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58448
专题	力学所知识产出(1956-2008)
通讯作者	Wei, B (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Peng W,Wei BC,Zhang TH,et al. Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation[J]. MATERIALS TRANSACTIONS,2007,48,7,:1759-1764.
APA	彭伟,魏炳忱,张泰华,刘渊,李磊,&Wei, B .(2007).Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation.MATERIALS TRANSACTIONS,48(7),1759-1764.
MLA	彭伟,et al."Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation".MATERIALS TRANSACTIONS 48.7(2007):1759-1764.

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