Strain rate dependent plastic mutation in a bulk metallic glass under compression

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	Strain rate dependent plastic mutation in a bulk metallic glass under compression
	Y. F. Xue; L. Wang; X. W. Cheng; F. C. Wang; H. W. Cheng; H. F. Zhang; A. M. Wang
	2012
发表期刊	Materials & Design
ISSN	0261-3069
卷号	36 页码:284-288
摘要	This paper reported a strain rate dependent plasticity in a Zr-based bulk metallic glass (BMG) under axial compression over a strain rate range (1.6 x 10 (5)-1.6 x 10 (1) s (1)). The fracture strain decreased with increasing strain rate up to 1.6 x 10 (3) s (1). A "brittle-to-malleable" mutation occurred at strain rate of 1.6 x 10 (2) s (1), subsequently, the macro plasticity vanished at 1.6 x 10 (1) s (1). It is proposed that the result is strongly related to the combined action of the applied strain rate, the compression speed, and the propagating speed of the shear band. When the three factors coordinated in the optimal condition, multiple mature shear bands were initiated simultaneously to accommodate the applied strain, which propagated through the specimen and distributed homogeneously in space, dominating the overall plastic deformation by consuming the entire specimen effectively. (C) 2011 Elsevier Ltd. All rights reserved.
部门归属	[xue, yunfei; wang, lu; cheng, xingwang; wang, fuchi; cheng, huanwu] beijing inst technol, sch mat sci & engn, natl key lab sci & technol mat shock & impact, beijing 100081, peoples r china. [zhang, haifeng; wang, aiming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china.;xue, yf (reprint author), beijing inst technol, sch mat sci & engn, natl key lab sci & technol mat shock & impact, 5 s zhongguancun st, beijing 100081, peoples r china.;xueyunfei@bit.edu.cn
关键词	Serrated Flow Viscoplastic Deformation Mechanical-properties Inhomogeneous Flow Amorphous-alloys Loading Rate Nanoindentation Behavior Model Dynamics
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60380
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. F. Xue,L. Wang,X. W. Cheng,et al. Strain rate dependent plastic mutation in a bulk metallic glass under compression[J]. Materials & Design,2012,36:284-288.
APA	Y. F. Xue.,L. Wang.,X. W. Cheng.,F. C. Wang.,H. W. Cheng.,...&A. M. Wang.(2012).Strain rate dependent plastic mutation in a bulk metallic glass under compression.Materials & Design,36,284-288.
MLA	Y. F. Xue,et al."Strain rate dependent plastic mutation in a bulk metallic glass under compression".Materials & Design 36(2012):284-288.