中文摘要：

AZ80 镁合金的半固体营舍被导致的新紧张准备融化激活(新 SIMA ) 过程和 thixoforging 实验被执行。在当演员组 AZ80 镁合金由相等的隧道被处理以后，结果显示出那尖挤出，微观结构由于发生在严重塑料的重动态再结晶被精制很好变丑。与半固体相比，等温的处理和常规 SIMA，有罚款的半固体营舍和球状的谷物在新 SIMA 被完成。新 SIMA 准备的半固体营舍的 Thixoforging 过程有象最后的部件的好表面质量那样的许多优点，充满洞和网形状的高能力。象 298 MPa 的张力的力量和 28% 罐头的延伸那样的好、球状的谷物和高机械的性质在最后的部分 thixoforged 被开发。

英文摘要：

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.