On strain hardening mechanism in gradient nanostructures
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- 作者：Jianjun Lia ; b ; jianjunli.mech@hotmail.com" class="auth_mail" title="E-mail the corresponding author ; j.li@mpie.de" class="auth_mail" title="E-mail the corresponding author ; mejjli@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; G.J. Wengc ; Shaohua Chend ; Xiaolei Wue
- 关键词：Ductility ; Dislocations ; Constitutive behavior ; Inhomogeneous material ; Analytic functions
- 刊名：International Journal of Plasticity
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：88
- 期：Complete
- 页码：89-107
- 全文大小：2968 K
文摘
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The strain hardening in gradient nanostructure is theoretically investigated.
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The experimentally observed surface nonuniform deformation is well reproduced.
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A strain hardening rate upturn is well predicted.
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The strain hardening can be as high as that of the coarse-grained counterpart.
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The high strain hardening results from the generation of geometrically necessary dislocations.