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Phase-field Study for Texture Evolution in Polycrystalline Materials under Applied Stress

Yanli Lu, Liuchao Zhang, Yingying Zhou, Zheng Chen, Jianguo Zhang   

  1. State Key Lab of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
  • Received:2013-03-29 Revised:2013-05-02 Online:2013-10-30 Published:2013-10-16
  • Contact: Y. Lu
  • Supported by:

    National Natural Science Foundation of China (Grant Nos.51174168, 51274167) and NPU Foundation for Fundamental Research (Grant No. JC20120222).

Abstract:

The formation and evolution of deformation texture in polycrystalline materials are studied by phase-field dynamic model. In addition, the driving force of texture evolution is also discussed. In this model, grains with different orientation are defined by a set of continuous non-conserved order parameter fields. Simulation results show that grains with preferred orientation grow at the expense of those with unfavorable orientations. It is more important that, elastic potential rather than elastic energy plays a crucial role in the evolution of texture whether the polycrystalline system is subjected to uniaxial stress or shear stress.

Key words: Deformation texture, Polycrystalline, Applied stress, Phase-field model