RE,Ca低合金化AZ31镁合金板材拉胀复合成形性能的研究  

Study on the Bending-Bulging Formability of AZ31 Mg Alloy Sheet by Microalloying of RE and Ca

作　　者：刘英[1] 陈维平[1] 张卫文[1] 张文[1] 李元元[1] 

机构地区：[1]华南理工大学

出　　处：《稀有金属材料与工程》2006年第6期925-928,共4页Rare Metal Materials and Engineering

基　　金：广东省自然科学基金资助项目(04300124);广东省自然科学基金重点项目(36547)

摘　　要：研究了稀土、钙元素低合金化对AZ31镁合金板材力学性能、弯曲及拉胀复合成形性能的影响。结果表明:加入0.3%RE,0.3Ca%(质量分数,下同)后,AZ31镁合金板材的晶粒较细、力学性能明显提高,300℃,4h退火后室温抗拉强度为284MPa、延伸率为23.2%;同时,该合金板材具有最好的弯曲及拉胀复合成形性能,随着温度的提高其成形性能进一步提高。The effects of microalloying by rare earth （RE） and Ca elements on the mechanical properties, bending and drawing-bulging formability of the AZ31 alloy sheets were investigated in this paper. The experimental results indicate that the sheets exhibit a finer microstructure and improved mechanical properties when 0.3% RE and 0.3% Ca elements are added in the AZ31 alloy. The tensile strength is 284 MPa and the elongation is 23.2% after annealing treatment of 300℃ for 4 h. At the same time, the Mg alloy sheets with 0.3% RE and 0.3%Ca additions presented the best bending and drawing-bulging formability, even improved greatly with the temperature increasing.

关 键 词：镁合金板材 RE Ca低合金化 成形性能 微观组织 

分 类 号：TG113.2[金属学及工艺—物理冶金]