博文
Correlation between hardness and shear banding of metallic
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Correlation between hardness and shear banding of metallic glasses under nanoindentation
a State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China
b Faculty of Materials and Energy, Southwest University, Chongqing 400715, China
c School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Shear banding is an important factor affecting the mechanical properties of metallic glasses. This paper decodes the relationship between hardness and shear banding illustrated by displacement bursts under nanoindentation. Both strain softening caused by shear banding and strain hardening after shear banding contribute to the hardness. It was concluded that randomly distributed large sized displacement bursts lead to more intense straining hardening and therefore a higher hardness increase than the uniformly distributed small sized bursts.
Keywords
Hardness; Shear banding; Softening; Hardening; Displacement bursts
http://www.sciencedirect.com/science/article/pii/S0921509316300466
https://blog.sciencenet.cn/blog-4773-951274.html
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