Elastic deformation behavior of CuZrAlNb metallic glass matrix composites with different crystallization degrees

The room temperature brittleness has been a long standing problem in bulk metallic glasses realm.This has seriously limited the application potential of metallic glasses and their composites.The elastic deformation behaviors of metallic glass matrix composites are closely related to their plastic de...

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Bibliographic Details
Published in:Journal of iron and steel research, international international, 2017-04, Vol.24 (4), p.430-434
Main Authors: Liang, Wei-zhong, Ning, Zhi-liang, Wang, Gang, Kang, Zhi-jie, Sun, Hai-chao, Chen, Yong-sheng
Format: Article
Language:English
Subjects:
Applied and Technical Physics
Digital image correlation technique
Elastic deformation
Engineering
Machines
Manufacturing
Materials Engineering
Materials Science
Metallic glass matrix composite
Metallic Materials
Physical Chemistry
Processes
Strain field
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Summary:The room temperature brittleness has been a long standing problem in bulk metallic glasses realm.This has seriously limited the application potential of metallic glasses and their composites.The elastic deformation behaviors of metallic glass matrix composites are closely related to their plastic deformation states.The elastic deformation behaviors of Cu48-xZr48Al4Nbx（x=0,3at.%）metallic glass matrix composites（MGMCs）with different crystallization degrees were investigated using an in-situ digital image correlation（DIC）technique during tensile process.With decreasing crystallization degree,MGMC exhibits obvious elastic deformation ability and an increased tensile fracture strength.The notable tensile elasticity is attributed to the larger shear strain heterogeneity emerging on the surface of the sample.This finding has implications for the development of MGMCs with excellent tensile properties.
ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(17)30065-1