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首页> 外文会议>2006 BIMW >Evolution of Micro-textures within Individual Grains in Rolled Polycrystal Aluminum
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Evolution of Micro-textures within Individual Grains in Rolled Polycrystal Aluminum

机译：轧制多晶铝中单个晶粒内微观组织的演变

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Local orientation distributions of two neighbouring grains initially orientated near (011)[100] and (210)[001], in a pure Al poly-crystal aggregate rolled by a reduction of 65% at room temperature have been investigated using electron backscatter diffraction (EBSD) technique. It was found that the rotation angles of zones adjacent to both sides of initial boundary (BP) are less than that of zones remote from the boundary (IP), which reveals that rotation incompatibility and heterogeneity of local orientations within individual grains during rolling. A type of improved Taylor type crystal plasticity models, in which an added prescribed shear (APS) depending on distances from grain boundary proposed, was established to illustrate development of micro-textures in each grain. The results simulated by the APS-Taylor models well agree with the micro-textures examined by EBSD.
机译：使用电子背散射衍射研究了在室温下以65％的压下率轧制的纯Al多晶聚集体中初始取向在（011）[100]和（210）[001]附近的两个相邻晶粒的局部取向分布（ EBSD）技术。发现与初始边界（BP）两侧相邻的区域的旋转角度小于远离边界（IP）的区域的旋转角度，这表明在轧制过程中单个晶粒内的局部取向的旋转不相容性和不均匀性。建立了一种改进的泰勒型晶体可塑性模型，其中根据所建议的距晶界的距离增加了规定的剪切力（APS），以说明每种晶粒中微观结构的发展。 APS-Taylor模型模拟的结果与EBSD检验的微观纹理非常吻合。

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