Effect of rolling geometry on the mechanical properties, microstructure and recrystallization texture of Al-Mg-Si alloys
Effect of rolling geometry on the mechanical properties, microstructure and recrystallization texture of Al-Mg-Si alloys
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DOI：
10.1007/s12613-015-1129-4
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发表时间：
2015-07
期刊：
影响因子：
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通讯作者：
Xiaofeng Wang;M. Guo;Lingyong Cao;Fei Wang;Ji-shan Zhang;L. Zhuang
中科院分区：
文献类型：
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作者：
Xiaofeng Wang;M. Guo;Lingyong Cao;Fei Wang;Ji-shan Zhang;L. Zhuang
通过拉伸试验、显微组织观察和电子背散射衍射分析，研究了轧制工艺对Al-Mg-Si合金力学性能、显微组织和再结晶织构的影响。结果表明，轧制几何尺寸在1 ~ 3之间的T4 P（预时效+自然时效）处理合金板材的延伸率和平均塑性应变比（r）值略高于轧制几何尺寸在3 ~ 6之间的T4 P处理板材。轧制几何值在1 ~ 3之间的板材的变形和再结晶组织比轧制几何值在3 ~ 6之间的板材的变形和再结晶组织均匀。前者还具有较高的表面质量。H {001}<110>和Goss {110}<001>取向是前者的主要再结晶织构组分，而后者仅包括H{001}<110>取向。织构梯度存在于两种合金板中。轧制几何尺寸在3 ~ 6之间的板材表面的剪切织构分量F及其较高的织构梯度表明，在冷轧过程中发生了不均匀变形。讨论了织构对屈服强度和屈服强度的影响.
The effect of rolling geometry on mechanical properties, microstructure, and recrystallization texture of Al-Mg-Si alloys was studied by means of tensile tests, microstructural observations, and electron backscatter diffraction measurements. The results reveal that the elongation and the average plasticity strain ratio (r) values of the T4P (pre-aging plus natural aging)-treated alloy sheet with a rolling geometry value between 1 and 3 are somewhat higher than those of the T4P-treated sheet with a rolling geometry value between 3 and 6. The deformation and recrystallization microstructures of the sheet with a rolling geometry value between 1 and 3 are more uniform than those of the sheet with a rolling geometry value between 3 and 6. The former also possesses somewhat higher surface quality. H {001}<110> and Goss {110}<001> orientations are the main recrystallization texture components for the former case, whereas the latter case only includes H{001}<110> orientation. Texture gradients are present in the two alloy sheets. Shear texture component F on the surface of the sheet with a rolling geometry value between 3 and 6 and its higher texture gradients have revealed that non-uniform deformation occurred during cold rolling. The effects of texture on the yield strength andrvalue were also discussed.