The intrinsic and extrinsic factors for brittle-to-ductile transition in bulk metallic glasses

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	The intrinsic and extrinsic factors for brittle-to-ductile transition in bulk metallic glasses
	Wei YJ(魏宇杰); Wei, Y (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
发表期刊	THEORETICAL AND APPLIED FRACTURE MECHANICS
	2014-06
卷号	71 页码:76-78
ISSN	0167-8442
摘要	We propose the ratio of critical strain energy density by distortional deformation over that by volumetric deformation as a material parameter to quantify the ductile-to-brittle transition in bulk metallic glasses (BMG). A BMG is regarded to be ductile (with high fracture toughness) if the ratio is low, implying shear dominated deformation precedes cavitation failure. In contrast, the BMG is brittle (with low fracture toughness) when the ratio is large, suggesting that cavitation is prone to occur before energy being dissipated via massive shear bands. The theory naturally reflects the intrinsic and extrinsic factors which could influence the brittle-to-ductile transition in bulk metallic glasses. (C) 2014 Elsevier Ltd. All rights reserved.
关键词	Poissons Ratio Shear Bands
学科领域	Engineering ; Mechanics
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000341555500009
项目资助者	Supports from Chinese Academy of Sciences via the Hundred Talent Programme, KJCX2-EW-L03, and the MOST 973 Project (2011CB711103) are acknowledged.
课题组名称	LNM微结构计算力学（筹）
论文分区	Q3
引用统计	被引频次：3[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/311007/49132
专题	非线性力学国家重点实验室
通讯作者	Wei, Y (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Wei YJ,Wei, Y . The intrinsic and extrinsic factors for brittle-to-ductile transition in bulk metallic glasses[J]. THEORETICAL AND APPLIED FRACTURE MECHANICS,2014,71:76-78.
APA	魏宇杰,&Wei, Y .(2014).The intrinsic and extrinsic factors for brittle-to-ductile transition in bulk metallic glasses.THEORETICAL AND APPLIED FRACTURE MECHANICS,71,76-78.
MLA	魏宇杰,et al."The intrinsic and extrinsic factors for brittle-to-ductile transition in bulk metallic glasses".THEORETICAL AND APPLIED FRACTURE MECHANICS 71(2014):76-78.

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