Dislocation Dissociation Strongly Influences on Frank-Read Source Nucleation and Microplasticy of Materials with Low Stacking Fault Energy

作者：Huang Min Sheng^*; Zhu Ya Xin; Li Zhen Huan

来源：Chinese Physics Letters, 2014, 31(4): 046102.

DOI：10.1088/0256-307X/31/4/046102

The influence of dislocation dissociation on the evolution of Frank-Read (F-R) sources is studied using a threedimensional discrete dislocation dynamics simulation (3D-DDD). The classical Orowan nucleation stress and recently proposed Benzerga nucleation time models for F-R sources are improved. This work shows that it is necessary to introduce the dislocation dissociation scheme into 3D-DDD simulation, especially for simulations on micro-plasticity of small sized materials with low stacking fault energy.

• 出版日期2014-4
• 单位华中科技大学