Mg-based bulk metallic glass composites with plasticity and gigapascal strength

doi:10.1016/j.actamat.2004.12.036

IMR OpenIR

	Mg-based bulk metallic glass composites with plasticity and gigapascal strength
	Xu, YK ; Ma, H ; Xu, J ; Ma, E
通讯作者	Xu, J(jianxu@imr.ac.cn)
	2005-04-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	53 期号:6 页码:1857-1866
摘要	The lightweight Mg65Cu7.5Ni7.5Zn5Ag5Y10 bulk metallic glasses (BMG) always fail before yielding, with irreproducible strengths < 650 MPa. Adding particles of TiB2 as the reinforcing phase, which can be uniformly distributed in the matrix without adversely affecting its glass-forming ability upon copper mold casting, the BMG composites can sustain a plastic strain to failure of 2-3% at a compressive fracture strength as high as 1.3 GPa. The strengthening/toughening effects of the second phase particles are attributed to their ability to serve as obstacles to the propagation of run-away shear bands and micro-cracks, as well as to the generation of multiple shear bands due to the large elastic mismatch between the TiB2 and the matrix. The angle between the compressive shear plane and loading axis is similar to 41 degrees, consistent with the Mohr-Coulomb criterion. The very high specific strength of similar to 3.5 x 10(5) N m kg(-1) exceeds by far those of commercial Mg or Al alloys and even Zr-based BMGs. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
关键词	metallic glasses mechanical properties magnesium composites
DOI	10.1016/j.actamat.2004.12.036
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000227572000025
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/82162
通讯作者	Xu, J
作者单位	1.CAS, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA
推荐引用方式 GB/T 7714	Xu, YK,Ma, H,Xu, J,et al. Mg-based bulk metallic glass composites with plasticity and gigapascal strength[J]. ACTA MATERIALIA,2005,53(6):1857-1866.
APA	Xu, YK,Ma, H,Xu, J,&Ma, E.(2005).Mg-based bulk metallic glass composites with plasticity and gigapascal strength.ACTA MATERIALIA,53(6),1857-1866.
MLA	Xu, YK,et al."Mg-based bulk metallic glass composites with plasticity and gigapascal strength".ACTA MATERIALIA 53.6(2005):1857-1866.