The microscopic analyses of polycrystalline material at high temperature were carried out. The crystal plasticity model proposed by Asaro and Needleman was applied to a polycrystal model in the finite element simulation and the crystal slip system was randomly provided for each crystal. The grain boundary sliding, which was characteristic at high temperature, was also taken into account. It was shown that the inhomogeneous deformation develops over the polycrystal and that the strain concentration appears around the triple point of crystal grain boundary.
参考文献
| [1] | G I Taylor .[J].Journal of the Institute of Metals,1938,62:307. |
| [2] | R J Asaro .[J].Advances in Applied Mechanics,1983,23:1. |
| [3] | E vanderGiessen;V Tvergaard .[J].International Journal of Fracture,1991,48:153. |
| [4] | M Tabuchi;T Watanabe;K Kubo;M. Matsui,J. Kinugawa F. Abe .[J].Journal of the Materials Science Society of Japan,2001,50:116. |
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