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473828 
Journal Article 
Influence of microsturcture hetero-geneousity on polycrystalline plastic behavior 
Geng, XL; Zhang, K; Guo, YQ; Qin, L 
2006 
42 
1 
49-53 
Chinese 
The relationship between macroscopic plastic behavior and microstructure of a polycrystalline aggregate which consists of grains with random orientation was analyzed numerically. The modeling results show that: (1) The microstructure heterogeneousity affects macroscopic mechanic behavior remarkably; (2) The mutual constrains between grains lead to the Bauschinger effect in polycrystals within the framework of single crystal plasticity theory, which is isotropic hardening; (3) The mechanism of the Bauschinger effect depends on several factors such as mutual constrains between grains, crystal elastic orthotropy and hardening of different orientations. 
crystal plasticity; polycrystalline materials; bauschinger effect; cyclic plasticity; integration algorithm; crystal plasticity; deformation; strain