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首页> 外文会议>2006 BIMW >Investigation of Inhomogeneous Deformation on Meso-scale with Crystal Plasticity Finite Element
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Investigation of Inhomogeneous Deformation on Meso-scale with Crystal Plasticity Finite Element

机译：用晶体塑性有限元研究中尺度上的非均匀变形

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The influence of crystallographic orientation stability on the inhomogeneous deformation on the meso-scale was numerically simulated with the crystal plasticity finite element. The initial microstructures were introduced into the finite element via intra-granular orientation gradient. The results demonstrated that the average orientation for both stable Goss and meta-stable cube oriented grains changed very little in plane strain compression (PSC). And for stable Goss oriented grain, the orientation gradient increased slightly, but for meta-stable cube oriented grain, the orientation gradient increased dramatically. And in spite of the same Taylor factor for both oriented grains, the dissipated averaged energy for cube oriented grain was higher than for Goss oriented grains, and the distribution width of dissipated work in cube oriented grain was also wider than that in Goss oriented grain. Furthermore, there was also strong energy gradient in PSC of cube oriented grain. Both the orientation gradient and energy gradient favor the nucleation of cube grains during recrystallization.
机译：用晶体塑性有限元数值模拟了晶体取向稳定性对细观尺度上非均匀变形的影响。初始的微观结构通过晶内取向梯度引入到有限元中。结果表明，在平面应变压缩（PSC）中，稳定的高斯和亚稳态立方体取向晶粒的平均取向变化很小。对于稳定的高斯取向晶粒，取向梯度会略有增加，但是对于亚稳态立方体取向晶粒，取向梯度会显着增加。尽管两种取向晶粒的泰勒因子相同，但立方体取向晶粒的耗散平均能量高于戈斯取向晶粒，并且立方体取向晶粒的耗散功分布宽度也比戈斯取向晶粒宽。此外，立方晶取向颗粒的PSC中也存在很强的能量梯度。取向梯度和能量梯度均有助于重结晶过程中立方晶核的形核。

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