Micro-mechanical behavior of porous tungsten/Zr-based metallic glass composite under cyclic compression

IMR OpenIR

	Micro-mechanical behavior of porous tungsten/Zr-based metallic glass composite under cyclic compression
	Zhang, X. Q.; Xue, Y. F.; Wang, L.; Fan, Q. B.; Nie, Z. H.; Zhang, H. F.; Fu, H. M.; xueyunfei@bit.edu.cn
	2015
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	643 页码:55-63
摘要	The micro-mechanical behavior of porous tungsten/Zr-based metallic glass composites with different tungsten volume fraction was investigated under cyclic compression by synchrotron-based in-situ high-energy X-ray diffraction (HEXRD) and finite element modeling (FEM). During cyclic compression, the dislocation in the tungsten phase tangled near the interfaces, indicating that the elastic metallic glass phase restricted dislocation motion and obstructed the deformation of the tungsten phase because of the heterogeneity in stress. After the metallic glass phase yielded, the dislocation tended to propagate away from the interfaces, showing the decrease of the interphase stress affected the direction of motion in the dislocations. The tungsten phase exhibited increased yield strength with the increase of cyclic loading number. Yield stress of the tungsten phase decreased with increasing the tungsten volume fraction during cyclic compression, which was influenced by the elastic strain mismatch between the two phases. The stress heterogeneity and the stress distribution difference between the two phases resulted in that the yield strength of the metallic glass phase decreased with the increase of tungsten volume fraction, and accelerated the formation of shear bands in the metallic glass phase as well as cracks in the tungsten phase. The heterogeneity in stress also excessed the interface bonding strength, inducing interface fracture near interfaces. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[zhang, x. q. ; xue, y. f. ; wang, l. ; fan, q. b. ; nie, z. h.] beijing inst technol, sch mat sci & engn, beijing 100081, peoples r china ; [zhang, h. f. ; fu, h. m.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
关键词	Metallic Glass Composite Micro-mechanical Behavior Finite Element Analysis (Fea) High Energy X-ray Diffraction (Hexrd)
资助者	National Natural Science Foundation of China [51471035, 51101018]; Hundred Talents Program of the Chinese Academy of Sciences; Beijing Higher Education Young Elite Teacher Project; US Department of Energy, Office of Science Laboratory
收录类别	sci
语种	英语
WOS记录号	WOS:000360250300009
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://ir.imr.ac.cn/handle/321006/74966
专题	中国科学院金属研究所
通讯作者	xueyunfei@bit.edu.cn
推荐引用方式 GB/T 7714	Zhang, X. Q.,Xue, Y. F.,Wang, L.,et al. Micro-mechanical behavior of porous tungsten/Zr-based metallic glass composite under cyclic compression[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2015,643:55-63.
APA	Zhang, X. Q..,Xue, Y. F..,Wang, L..,Fan, Q. B..,Nie, Z. H..,...&xueyunfei@bit.edu.cn.(2015).Micro-mechanical behavior of porous tungsten/Zr-based metallic glass composite under cyclic compression.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,643,55-63.
MLA	Zhang, X. Q.,et al."Micro-mechanical behavior of porous tungsten/Zr-based metallic glass composite under cyclic compression".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 643(2015):55-63.