Yield strength and yield strain of metallic glasses and their correlations with glass transition temperature

IMR OpenIR

	Yield strength and yield strain of metallic glasses and their correlations with glass transition temperature
	Qu, R. T.; Liu, Z. Q.; Wang, R. F.; Zhang, Z. F.; zhfzhang@imr.ac.cn
	2015
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	637 页码:44-54
摘要	Strength should be the most outstanding mechanical property for metallic glasses (MGs). Here we analyze the strengths of MGs with more than 300 compositions in similar to 30 alloy systems covering nearly all strength levels, ranging from 0.3 GPa to 6 GPa. With these abundant experimental data available, we find that the yield strain is not always constant but depends on glass transition temperature, T-g, ranging from 1% to 2.5% for normal strain and from 1.2% to 3.4% for shear strain. This can be well explained by assuming an equivalent energy barrier for yielding and glass transition. Relations derived based on this assumption show that MGs with high T-g may yield with larger critical strain and higher strength, implying that high elasticity, high strength and high thermostability can be synchronously achieved for MGs. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[qu, r. t. ; liu, z. q. ; wang, r. f. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
关键词	Metallic Glass Yield Strength Yield Strain Glass Transition Temperature Shear Transformation Zone
资助者	National Natural Science Foundation of China (NSFC) [51331007, 51301174]; IMR SYNL-T.S. Ke Research Fellowship; China Postdoctoral Science Foundation [2014M561263]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75246
专题	中国科学院金属研究所
通讯作者	zhfzhang@imr.ac.cn
推荐引用方式 GB/T 7714	Qu, R. T.,Liu, Z. Q.,Wang, R. F.,et al. Yield strength and yield strain of metallic glasses and their correlations with glass transition temperature[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2015,637:44-54.
APA	Qu, R. T.,Liu, Z. Q.,Wang, R. F.,Zhang, Z. F.,&zhfzhang@imr.ac.cn.(2015).Yield strength and yield strain of metallic glasses and their correlations with glass transition temperature.JOURNAL OF ALLOYS AND COMPOUNDS,637,44-54.
MLA	Qu, R. T.,et al."Yield strength and yield strain of metallic glasses and their correlations with glass transition temperature".JOURNAL OF ALLOYS AND COMPOUNDS 637(2015):44-54.