哈尔滨工业大学学报（英文版）2009，Vol.16Issue(2)：227-231,5.
Corner forming of AZ61A magnesium alloy tube within warm hydroforming
Corner forming of AZ61A magnesium alloy tube within warm hydroforming
摘要
Abstract
The corners with small radii on cross sections are crucial for forming hydroformed components with polygonal sections. In this paper, warm hydroforming experiments of AZ61 A magnesium alloy tubes were carried out to study the forming regularity of round corners by using a demonstration part with square sections.Effects of temperature on radius forming, thinning ratio distribution and microstructure were revealed and a component with relative outer corner radius of 3.0 was obtained by warm hydroforming at 240℃. The minimum thickness of the formed square section was located in the transition position between the corner and the straight wall. The thinning ratio of the round corner increased with the increase of forming temperature. Formability of the magnesium tube was improved by raising temperature under the effect of dynamic recrystallization at 240℃.关键词
warm hydroforming/magnesium alloy/thickness distributionKey words
warm hydroforming/magnesium alloy/thickness distribution分类
矿业与冶金引用本文复制引用
HU Lan,HAN Cong,HE Zhu-bin,TANG Ze-jun,LIU Gang,YUAN Shi-jian..Corner forming of AZ61A magnesium alloy tube within warm hydroforming[J].哈尔滨工业大学学报（英文版）,2009,16(2):227-231,5.基金项目
Sponsored by the National Natural Science Foundation of China for Distinguished Young Scholars(Grant No. 50525516), the National Key Technology R&D Program (Grant No. 2006BAE04B03) and Program for New Century Excellent Talents in University. （Grant No. 50525516）
