Preparation and thixoforging of semisolid billet of AZ80 magnesium alloy

摘要：

Semisolid billet of AZ80 magnesium alloy was prepared by new strain induced melt activated (new SIMA) process and thixoforging experiment was performed.The results show that after as-cast AZ80 magnesium alloy is processed by equal channel angular extrusion,microstructure is refined well due to heavy dynamic recrystallization occurring in severe plastic deformation.Compared with semisolid isothermal treatment and conventional SIMA,semisolid billet with fine and spheroidal grains are achieved in new SIMA.Thixoforging process of semisolid billet prepared by new SIMA has many advantages such as good surface quality of final component,high ability to fill cavity and net-shape.The fine and spheroidal grains and high mechanical properties such as tensile strength of 298 MPa and elongation of 28％ can be developed in final part thixoforged.

关键词： AZ80 magnesium alloy semi-solid forming thixoforging semisolid billet strain induced melt activation

作者: JIANG Ju-fu WANG Ying QU Jian-jun DU Zhi-ming LUO Shou-jing

作者单位: School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;Po School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China;Postdoctora Postdoctoral Mobile Station of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001 School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

会议类型: 国际会议

会议名称: The 11th International Conference on Semi-Solid Processing of Alloy and Composites(第11届合金与复合材料半固态成形国际会议)

会议地点: 北京

会议语种:英文

页码: 1731-1736

在线出版日期: 2010-09-16（万方平台首次上网日期，不代表论文的发表时间）