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Effect of Ta particles on the fracture behavior of notched bulk metallic glass composites
Pan, J.; Lin, Y.; Zhang, J.; Huang, W.; Li, Y.
2019-03-01
Source PublicationINTERMETALLICS
ISSN0966-9795
Volume106Pages:1-6
AbstractThe 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.
KeywordBulk metallic glass composite Fracture strength Triaxial stress state Dimples
Indexed BySCI
Language英语
WOS IDWOS:000457815700001
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81329
Collection中国科学院金属研究所
Recommended Citation
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.
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