The dependence of microstructure, texture evolution and mechanical properties of Al–Mg–Si–Cu alloy sheet on final cold rolling deformation
The dependence of microstructure, texture evolution and mechanical properties of Al–Mg–Si–Cu alloy sheet on final cold rolling deformation
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DOI：
10.1016/j.jallcom.2015.10.070
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发表时间：
2016-02
影响因子：
6.2
通讯作者：
Xiaofeng Wang;M. Guo;Y. Zhang;Hui Xing;Yong Li;Jin-ru Luo;Ji-shan Zhang;L. Zhuang
中科院分区：
文献类型：
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作者：
Xiaofeng Wang;M. Guo;Y. Zhang;Hui Xing;Yong Li;Jin-ru Luo;Ji-shan Zhang;L. Zhuang
本研究通过拉伸试验、显微组织和织构表征，研究了 Al-Mg-Si-Cu 合金板材的显微组织、织构演变和力学性能对最终冷轧变形的依赖性。结果表明，不同的最终冷轧变形对显微组织和织构的演变以及最终力学性能有很大影响。与最终冷轧变形较高（75%）的T4P处理（80℃预时效12h加自然时效14天）合金板A相比，最终冷轧变形较低（50%）的T4P处理合金板B具有几乎相同的强度和伸长率，但平均值更高，Δr值更低。与退火合金板A相比，退火合金板B中细颗粒的密度更高，这进一步影响显微组织和织构的演变。固溶处理后，两种合金片材均由晶粒尺寸略有不同的等轴晶组成，并且片材A中具有不同的织构，Goss{110}<001>和Cube{100}<001>取向，而片材B中只有低强度的Cube取向。还通过粘塑性自洽（VPSC）模型分析了两种合金片材的织构与r值之间的关系。
Dependence of microstructure, texture evolution and mechanical properties of Al–Mg–Si–Cu alloy sheet on final cold rolling deformation was studied by means of tensile test, microstructure and texture characterization in this study. The results reveal that the different final cold rolling deformations have a great influence on the evolution of microstructure and texture, and final mechanical properties. Compared with the T4P treated (pre-aged at 80 °C for 12 h plus naturally aged for 14 days) alloy sheet A with a high final cold rolling deformation (75%), the T4P treated alloy sheet B with a lower final cold rolling deformation (50%) possesses almost identical strength and elongation, but a higher averagerand a lower Δrvalue. Compared with the annealed alloy sheet A, the density of finer particles in the annealed alloy sheet B is higher, which further can affect the evolution of microstructure and texture. After solution treatment, the two alloy sheets are comprised of equiaxed grains with somewhat different grain sizes, and the different textures, Goss {110}<001> and Cube {100}<001> orientations in the sheet A, while only Cube orientation with a low intensity in the sheet B. The relationship between texture andrvalue in the two alloy sheets was also analyzed by Visco-plastic self-consistent (VPSC) model.