通过硬度测试、力学性能测试和烘烤硬化性能测试，研究了6016 铝合金冷轧板材的热处理工艺，结果表明：合金的硬度随着固溶温度升高和固溶时间延长而增加；合金进行预时效处理时，随着预时效时间的增加硬度出现先降低后升高的现象，且预时效温度越高，硬度下降值越大；在本试验条件下，满足覆盖件性能要求的6016合金的热处理工艺为：540 ℃×20 min固溶水淬+120 ℃×10 min预时效处理。

Research on heat treatment process of 6016 aluminum alloy has been carried out by means of hardness measurement，mechanical properties test and bake- hardening property test. The results indicate that hardness of alloy increases with the rise of solution temperature and solution time increase. The hardness of alloy initially decreases and then increases with pre- aging time increase when pre- aging. The higher the temperature of pre- aging，the bigger the decrease value of hardness will be. The heat treatment process of 6016 alloy satisfying the demand of outer panel property is：540 ℃×20 min solution treatment + 120 ℃×10 min preaging.