Examining the pathways for deformation band formation at the mesoscale
Examining the pathways for deformation band formation at the mesoscale
复制标题
检查介观尺度变形带形成的路径
DOI：
10.1016/j.matchar.2021.111552
复制
发表时间：
2021
影响因子：
4.7
通讯作者：
Sangid, Michael D.
中科院分区：
文献类型：
--
作者：
Rotella, John;Pilchak, Adam L.;Sangid, Michael D.
在宏观尺度上，应变积累与最大剪应力平面平行。在这项工作中，塑性应变累积被跟踪跨越四个感兴趣的中尺度区域。每一个都代表不同的拉扭载荷配置。研究了变形路径相对于最大剪应力平面的局部偏差。观察到变形路径的偏差是局部塑性应变量和微观组织特征的函数。根据这些结果，基于宏观和微观变形以及变形带的空间统计，创建了具有代表性的体积单元。
At the macroscopic scale, strain accumulation is known to form parallel to the plane of maximum shear stress. In this work, plastic strain accumulation is tracked across four mesoscale areas of interests. Each representing a different configuration of tension-torsion loading. The local deviations in the deformation pathways were investigated relative to the plane of maximum shear stress. The deviations in the deformation pathways were observed to be a function of the local plastic strain magnitude and the microstructural features. From these results, a representative volume element was created based on the macroscopic and micromechanical deformations as well as the spatial statistics of the deformation bands.