冷拔铝线材显微组织和织构演变的温度相关性（英文）

发布时间：2018-05-11 05:10

本文选题：铝线材 + 低温冷拔变形　；参考：《Transactions of Nonferrous Metals Society of China》2017年04期

【摘要】：采用TEM和EBSD研究变形量和变形温度对冷拔铝线材的显微组织和纤维织构演变的影响。结果表明,在低应变量下,随着应变量的增加,低角度界面数量增加而高角度界面数量减少。在高应变量下,绝大部分晶界和位错界面与冷拔方向平行。但是在高应变量下,随着应变量的增大,低角度界面数量减少而高角度界面数量增加。降低形变温度会导致显微组织细化,低角度界面数量增加。织构分析表明,随着应变量的增大,复杂织构组分的体积分数降低,在高应变量下形成?111?和?100?混合织构。在低应变下,?111?织构组分比较稳定,而在高应变下,?100?织构组分趋于稳定。降低形变温度使?111?织构组分在高应变下的稳定性增强。
[Abstract]:The effects of deformation amount and deformation temperature on microstructure and fiber texture evolution of cold-drawn aluminum wire were studied by TEM and EBSD. The results show that the number of low-angle interfaces increases and the number of high-angle interfaces decreases with the increase of strain variables. At high strain, most grain boundaries and dislocation interfaces are parallel to the cold drawing direction. However, with the increase of strain, the number of low-angle interfaces decreases and the number of high-angle interfaces increases. The decrease of deformation temperature will lead to the refinement of microstructure and the increase of the number of low angle interfaces. Texture analysis shows that the volume fraction of the complex texture component decreases with the increase of the strain, and the volume fraction of the complex texture component decreases with the increase of the strain variable, and the volume fraction of the complex texture component decreases with the increase of the strain variable. And a hundred? Mixed texture. At low strain, 111? The texture composition is relatively stable, but at high strain, it is 100? Texture components tend to stabilize. Lowering the deformation temperature so that 111? The stability of texture components is enhanced under high strain.
【作者单位】：西北工业大学材料学院凝固国家重点实验室;西安工业大学材料与化工学院;
【基金】：Projects(51471123,51171135)supported by the National Natural Science Foundation of China Projects(2012K07-08,2013KJXX-61)supported by the Natural Science Foundation of Shaanxi Province,China Project(2013JC14)supported by the Industrialization Program of Shaanxi Province,China
【分类号】：TG146.21;TG359

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