3104深冲铝板织构对初始R值的影响

Influence of Texture on Initial R-value of Deep Drawing 3104 Aluminum Sheet

以深冲铝板R值的在线检测为应用背景,塑性变形滑移系开动的过程为出发点,分析了初始滑移系选取的方式,并计算了不同取向3104铝合金板的初始R值.结果表明,织构是决定板材R值最主要的因素,其中初始R值是实测R值的重要组成部分.3104铝板中存在的织构组分决定其R0值最低、R90值最高.计算表明,{111}面织构有利于在明显降低制耳效应的前提下,大幅度提高铝板的深冲压性能.

In consideration on the on-line R-value measurement of aluminum deep drawing sheets, the selection of initial slip systems was analyzed according to the activation process of the slip systems during plastic deformation. Initial R values of the 3104 aluminum sheet in different directions were calculated. It was shown that texture is the most important effect factor for determining R value, of which initial R value is the key part. The textures existing in the 3104 sheet decide that R0 is the lowest and R90 is the highest. The calculation indicates that the {111} fiber texture can increase the deep draw-ability drastically while the earring effect is obviously reduced.