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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。
TEM and EBSD were used to study the effect of deformation and deformation temperature on the microstructure and fiber texture evolution of cold drawn aluminum wire. The results show that at low strain, the number of low-angle interfaces increases and the number of high-angle interfaces decreases with the increase of strain. At high strain levels, most of the grain boundaries and dislocation interfaces are parallel to the cold drawing direction. However, at high strain levels, as the amount of strain increases, the number of low-angle interfaces decreases and the number of high-angle interfaces increases. Decreasing the deformation temperature results in the refinement of the microstructure and an increase in the number of low-angle interfaces. The texture analysis shows that with the increase of strain, the volume fraction of complex texture components decreases, and the mixed texture of? 111? And? 100? Under low strain, the texture component of 111 is relatively stable, while the texture component of 100 is stable under high strain. Decreasing the deformation temperature increases the stability of the? 111? Texture component at high strain.