汽车用5182铝合金的温拉深成形性能  

Forming properties of 5182 aluminum alloy for automotive body sheet during warm deep drawing processes

作　　者：王孟君[1,2] 周威[1] 任杰[1] 李彩文[1] 黄电源[1] 李光耀[2] 

机构地区：[1]中南大学有色金属材料科学与工程教育部重点实验室,湖南长沙410083 [2]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082

出　　处：《中南大学学报（自然科学版）》2010年第3期936-939,共4页Journal of Central South University:Science and Technology

基　　金：汽车车身先进设计制造国家重点实验室开放基金资助项目(30815009);中南大学2009年度米塔尔学生创新项目资助(09MX22)

摘　　要：在变形温度为303～573K,拉深速度为0.1～1.5mm/s,压边力为2.0～3.5N/mm2的条件下,采用差温拉深试验,对汽车用5182铝合金板拉深成形性能进行研究。研究结果表明:5182铝合金的极限拉深比LDR并不随着变形温度的升高而单调增加,在523K时达到最大值2.5,之后随着温度的继续升高,极限拉深比反而下降;当压边力小于3.0N/mm2时,随着压边力的增加,LDR逐渐增大,但当压边力超过3.0N/mm2时,LDR迅速减小;5182铝合金板低速拉深时的成形性能(小于0.5mm/s)比快速拉深的成形性能好。The forming properties of 5182 aluminium alloy sheet for automotive body were studied by warm deep drawing experiment with the drawing speed ranging from 0.1 mm/s to 1.5 mm/s,forming temperature from 303 K to 573 K,blank holder force from 2.0 N/mm2 to 3.5 N/mm2. The results show that the limiting drawing ratio （LDR） does not increase with the forming temperature monotonously and LDR decreases while the forming temperature increases after it gets to the maximum value 2.5 at 523 K. LDR increases with the increase of blank holder force when the blank holder force is below 3.0 N/mm2 and the LDR value decreases rapidly when the blank holder force is higher than 3.0 N/mm2. The forming properties of 5182 aluminium alloy sheet are better when the drawing speed is lower than 0.5 mm/s.

关 键 词：5182铝合金 温拉深 成形性能 极限拉深比 

分 类 号：TG146.21[一般工业技术—材料科学与工程]