通过力学性能测试、烘烤硬化性能测试和抗凹性能测试，研究了用于制备汽车覆盖件的6016 铝合金板材的抗凹性能以及抗凹性与材料力学性能和烘烤硬化性能之间的关系。结果表明：6016 铝合金板材经两年自然时效后，其强度略有增加，加工硬化指数n 值和延伸率增大；板材在不同温度条件下经30 min烘烤后强度增加，烘烤硬化值随着温度升高而显著增加，表现出良好的烘烤硬化性能；板材的抗凹性能与烘烤工艺有关，烘烤温度越高，烘烤后材料的屈服强度越高，板材的抗凹性能越好。

Researches on dent resistance property and the relationship among dent resistance， mechanical property and bake- hardening property of 6016 aluminum alloy have been carried out by means of mechanical properties test，bake- hardening property test and dent resistance test. The results indicate that after two years natural aging，the strain hardening exponent nvalue and elongation of 6016 aluminum alloy sheets increase. With 30 min baking at different temperatures，strength of the sheets increases. The bake-hardening values remarkably increase with temperature rising. The sheets exhibit good bake-hardening property. The dent resistance property is related to baking process. The higher the baking temperature is which leads to higher strength，the better the dent resistance property of the sheets will be.