Continuum dislocation theory accounting for redundant dislocations and Taylor hardening
Continuum dislocation theory accounting for redundant dislocations and Taylor hardening
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DOI：
10.1016/j.ijengsci.2016.06.001
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发表时间：
2016-09
影响因子：
6.6
通讯作者：
K. Le;P. Sembiring;T. N. Tran
中科院分区：
文献类型：
--
作者：
K. Le;P. Sembiring;T. N. Tran
本文发展了单晶中考虑冗余位错密度和泰勒硬化的唯象连续位错理论。作为例子，在该理论范围内解决了单晶单滑移变形的反平面约束剪切问题。得到了平衡终态下多余位错的分布以及表现Bauschinger平移加工硬化和尺寸效应的应力-应变曲线，并与不考虑多余位错密度和Taylor硬化的连续位错理论得到的应力-应变曲线进行了比较。
This paper develops the phenomenological continuum dislocation theory accounting for the density of redundant dislocations and Taylor hardening for single crystals. As illustration, the problem of anti-plane constrained shear of single crystal deforming in single slip is solved within the proposed theory. The distribution of excess dislocations in the final state of equilibrium as well as the stress-strain curve exhibiting the Bauschinger translational work hardening and the size effect are found. Comparison with the stress-strain curve obtained from the continuum dislocation theory without the density of redundant dislocations and Taylor hardening is provided.