【摘要】 采用高温拉伸、显微组织观察等方法,研究温轧和冷轧工艺对2 mm厚的5083铝合金薄板的高温伸长率影响。结果表明:在510℃和ε’=3.6×10-3s-1时,冷轧和温轧板材的伸长率分别为253%和236%;5083铝合金细晶组织在拉伸变形过程中通过晶界滑动和晶粒转动等使晶粒等轴化,且逐渐转向拉伸轴方向,合金的伸长率得到明显提高。更多还原

【Abstract】 The elongation rate of warm and clod rolled 5083 aluminum alloy sheets with thickness of 2mm has been investigated by high temperature tension and microstructure observation.The results show that the elongation rate of clod and warm rolled 5083 aluminum alloy sheets at the condition of 510℃ and ε’ =3.6×10-3s-1 are 253% and 236% respectively;the fine-grain structure of 5083 aluminum alloy has been equiaxed by grain boundary sliding and grain rotating during tension deformation,and the grains turned gradually to the tensile axis direction,finally the elongation of 5083 alloy sheets being increased obviously.更多还原