微观结构
材料科学
等轴晶
粒度
电子背散射衍射
纹理(宇宙学)
极限抗拉强度
衍射仪
冶金
应变率
再结晶(地质)
合金
扫描电子显微镜
复合材料
生物
图像(数学)
古生物学
人工智能
计算机科学
作者
Xiaofeng Wang,Muxing Guo,Wenfei Peng,Yonggang Wang,Linzhong Zhuang
标识
DOI:10.1016/s1003-6326(20)65477-2
摘要
The relationship among heating rate, mechanical properties, microstructure and texture of Al−Mg−Si−Cu alloy during solution treatment was investigated through tensile test, scanning electron microscope, X-ray diffractometer and EBSD technology. The experimental results reveal that there is a non-monotonic relationship among solution heating rate, mechanical properties, microstructure and texture. As the solution heating rate increases, the strength variations are dependent on the tensile direction; work hardening exponent n decreases first, and then increases; plastic strain ratio r increases first, and then decreases, and finally increases. The final microstructure and texture are also affected by heating rate. As heating rate increases, the microstructure transforms from elongated grain structure to equiaxed grain structure, and the average grain size decreases first, and then increases, and decreases finally. Although the texture components including CubeND{001}〈310〉 and P{011}〈122〉 orientations almost have no change with the increase of heating rate, the texture intensity and volume fraction decrease first, and then increase, and finally decrease. Both microstructure and texture evolutions are weakly affected by heating rate. Improving heating rate is not always favorable for the development of fine equiaxed grain structure, weak texture and high average r value, which may be related to the recrystallization behavior.
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