Evaluation and visualization of geometrically necessary dislocations in metal microstructures by means of continuum mechanics analysis
Evaluation and visualization of geometrically necessary dislocations in metal microstructures by means of continuum mechanics analysis
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通过连续介质力学分析对金属微观结构中几何必要位错进行评估和可视化
DOI：
10.1051/jp4:1999928
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
T. Ohashi
中科院分区：
文献类型：
--
作者：
T. Ohashi
显示了用于评估位错积累及其可视化的数值技术。通过有限元方法分析模型金属微观结构的塑性滑移变形，并结合晶体滑移系统上塑性剪切应变的梯度来评估畸变密度分布的发展。该技术应用于简化的夹杂物几何形状 - 基体微观结构，并讨论了夹杂物周围位错积累的三维场景。
A numencal technique is shown for the evaluation of dislocation accumulation and their visualization. Plastic slip deformation of modeled metal microstructures are analyzed by a finite element method and developments of distortion density distribution are evaluated in conjunction with gradients of plastic shear strain on crystal slip systems. The technique is applied to simplified geometries ot inclusion - matrix microstructures and a three dimensional scenano of dislocation accumulation around the inclusion is discussed.