Effect of heterogeneous dual-phase microstructure on tensile response of nickel-base superalloy
Crystal plasticity constitutive formulations were implemented with the finite element software ABAQUS. By using crystal plasticity model, the strain rate dependent behavior of a nickel-base superalloy was analyzed. The effects of heterogeneous microstructure on the superalloy mechanical behavior was taken into account. The computational results show that: (i) Dual phase superalloys were affected seriously by strain rate, (ii) Heterogeneous distribution of micro stress and micro plasticity slip were induced by heterogeneous microstructure. (iii) Micro plasticity slip originates in matrix firstly. These results are.of significance because that the heterogeneous distribution of micro stress and micro plasticity slip may be the origin of damage evolution and void nucleation.
Yun-qiang Guo Ke-shi Zhang Xiao-liang Geng Qin Liu
School of Mechanics, Civil Engineering and Architecture, Northwestern For/technical University,Xian School of Mechanics, Civil Engineering and Architecture, Northwestern For/technical University,Xian
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
161-166
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）