Tensile fracture morphologies of bulk metallic glass

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	Tensile fracture morphologies of bulk metallic glass
	R. T. Qu; M. Stoica; J. Eckert; Z. F. Zhang
	2010
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	108 期号:6
摘要	The fracture morphology plays a much important role not only for the failure analysis of materials but also for the clarification of their fracture mechanisms. However, quantitative analysis of the fracture morphology of bulk metallic glasses (BMGs) is still very lacking. In this study, both model and mechanical experiments were conducted to reveal the development of the fracture morphology and the effect of stress state. Inclined notch tensile specimens of a Zr-based BMG with different notch angles were designed to obtain various stress states. For the first time, some new parameters to describe the tensile fracture surfaces of the BMG specimens were proposed. Statistical analysis of these parameters shows that the stress state has a significant influence on the features of fracture surfaces. Through a discussion on the structure and heat evolution during tensile deformation, two damage mechanisms associated with thermal softening and weakening by defects are found to have a combined effect on the tensile fracture of BMG. (c) 2010 American Institute of Physics. [doi:10.1063/1.3487968]
部门归属	[qu, r. t.; zhang, z. f.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [stoica, m.; eckert, j.] ifw dresden, inst complex mat, d-01171 dresden, germany. [eckert, j.] tech univ dresden, inst mat sci, d-01062 dresden, germany.;qu, rt (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;zhfzhang@imr.ac.cn
关键词	Brittle Fracture Deformation Failure (Mechanical) Metallic Glasses Notch Strength Statistical Analysis Stress Effects Zirconium Alloys Shear Bands Amorphous-alloys Plastic-flow Deformation Mechanism Localization Liquid
URL	查看原文
WOS记录号	WOS:000282646400027
引用统计	被引频次：59[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/321006/31418
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. T. Qu,M. Stoica,J. Eckert,et al. Tensile fracture morphologies of bulk metallic glass[J]. Journal of Applied Physics,2010,108(6).
APA	R. T. Qu,M. Stoica,J. Eckert,&Z. F. Zhang.(2010).Tensile fracture morphologies of bulk metallic glass.Journal of Applied Physics,108(6).
MLA	R. T. Qu,et al."Tensile fracture morphologies of bulk metallic glass".Journal of Applied Physics 108.6(2010).