Effect of Ta particles on the fracture behavior of notched bulk metallic glass composites

doi:10.1016/j.intermet.2018.12.005

IMR OpenIR

	Effect of Ta particles on the fracture behavior of notched bulk metallic glass composites
	Pan, J.; Lin, Y.; Zhang, J.; Huang, W.; Li, Y.
通讯作者	Pan, J.(jiepan@imr.ac.cn) ; Li, Y.(liyi@imr.ac.cn)
	2019-03-01
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	106 页码:1-6
摘要	The existence of second phase usually promotes the formation of multiple shear bands under uniaxial loading, leading to the apparent strain hardening and enhanced plasticity in bulk metallic glasses (BMGs). However, the effect of second phase on the fracture behavior of BMGs has been rarely investigated when shear banding is suppressed. In this work, the effect of Ta particles on the fracture behavior of notched bulk metallic glass composites (BMGCs) was investigated, where shear banding is suppressed due to the introduction of high triaxial stress state. With an increase in the volume fraction of Ta particles from 0 to 3.3%, the fracture strength significantly decreases from 2.70 to 1.20 GPa. Different from the vein-like patterns caused by shear banding, the fracture surface of notched BMGCs displays numerous equiaxed dimples and micro-cracks, indicating that voids nucleation and coalescence govern the fracture process. Due to the relatively weak bonding of the interface and the mechanical incompatibility between Ta particles and amorphous matrix, voids tend to nucleate at the interface during tensile deformation, giving rise to a reduction in the fracture strength of BMGCs.
关键词	Bulk metallic glass composite Fracture strength Triaxial stress state Dimples
资助者	National Natural Science Foundation of China
DOI	10.1016/j.intermet.2018.12.005
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51871217] ; National Natural Science Foundation of China[51401220] ; National Natural Science Foundation of China[51471165]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000457815700001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：7[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/321006/131545
专题	中国科学院金属研究所
通讯作者	Pan, J.; Li, Y.
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Pan, J.,Lin, Y.,Zhang, J.,et al. Effect of Ta particles on the fracture behavior of notched bulk metallic glass composites[J]. INTERMETALLICS,2019,106:1-6.
APA	Pan, J.,Lin, Y.,Zhang, J.,Huang, W.,&Li, Y..(2019).Effect of Ta particles on the fracture behavior of notched bulk metallic glass composites.INTERMETALLICS,106,1-6.
MLA	Pan, J.,et al."Effect of Ta particles on the fracture behavior of notched bulk metallic glass composites".INTERMETALLICS 106(2019):1-6.