Weight reduction plays an important role in reducing fuel and emissions, and the heat-treatable 6016 aluminum alloy exhibits excellent application prospect in automobile lightweight. In this paper, ingot with constant Mg/Si ratio and decreased Mg and Si contents was obtained. Both the microstructure and the texture of 6016 aluminum alloy plate designed with different alloy compositions at the top/bottom were systematically investigated by electron backscatter diffraction technology (EBSD) measurement, as well as the room-temperature mechanical properties at the different positions with composition gradient. The results indicate that as Mg and Si contents increase, the grain size decreases, improving the cube texture with recrystallization and weakening the S texture. The strength of 6016 aluminum alloy decreases with lower Mg and Si contents.

中文翻译：

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梯度成分6016铝合金的组织与性能

减重对降低燃油和排放具有重要作用，可热处理的6016铝合金在汽车轻量化方面具有良好的应用前景。在本文中，获得了具有恒定 Mg/Si 比和降低的 Mg 和 Si 含量的铸锭。通过电子背散射衍射技术（EBSD）测量系统地研究了上下不同合金成分设计的6016铝合金板材的显微组织和织构，以及成分梯度不同位置的室温力学性能. 结果表明，随着Mg和Si含量的增加，晶粒尺寸减小，随着再结晶改善立方织构并削弱S织构。6016铝合金的强度随着Mg和Si含量的降低而降低。