A phase field modelling for multi-scale deformation mechanics of polycrystalline metals
A phase field modelling for multi-scale deformation mechanics of polycrystalline metals
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DOI：
10.1016/j.proeng.2011.04.296
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
T. Uehara
中科院分区：
文献类型：
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作者：
T. Uehara
采用相场法模拟了多晶金属的多尺度变形机制。采用多相流场模型，引入了修正的相和应力应变耦合方程，并在典型的试验条件下进行了数值求解。首先对晶粒长大过程进行了模拟，并计算了微观应力分布。显微组织形态的应力依赖性的显着影响。然后通过拉伸试验验证了宏观载荷与微观组织之间的关系。宏观变形引起了微观结构的重排，我们的结论是，本模型是有效的，为进一步研究多尺度变形力学。
A phase field modelling to clarify the multi-scale deformation mechanism of polycrystalline metals was undertaken. Modified coupling equations between the phase and stress/strain using a multiphase field model were introduced, and solved numerically under typical test-case conditions. The grain growth process was simulated first, and the microscopic stress distribution was calculated. The microstructural morphology was drastically affected by the stress dependency. The relationship between macroscopic loading and microstructure was then verified by a tensile test. Microstructural rearrangement was induced by macroscopic deformation, and we conclude that the present model is effective for further investigation into the multi-scale deformation mechanics.