联合成形工艺对纯镁的组织及性能的影响  

Effects of Combined Forming on Structure and Mechanical Properties of Pure Magnesium

作　　者：赵玉华[1] 刘越[2] 孙旭东[1] 黄震威[3] 

机构地区：[1]东北大学材料与冶金学院 [2]中国科学院沈阳金属研究所 [3]沈阳航空工业学院材料工程系

出　　处：《特种铸造及有色合金》2007年第4期262-264,共3页Special Casting & Nonferrous Alloys

摘　　要：晶粒细化对镁合金力学性能的提高非常明显,是镁合金的重要强化手段之一。通过对纯镁进行挤压铸造和挤压变形联合成形工艺的研究,结果表明,纯镁在150MPa压力下挤压铸造后,经挤压比为10的挤压变形,可获得平均粒径为7.9μm的细小、均匀的等轴晶组织,其常温力学性能达到了WE43AMB合金T6状态的水平。Grain refinement can obviously improve the mechanical properties of magnesium, which is a approach to strengthen magnesium alloy. The effects of squeezing casting combining with squeezing deformation on the microstructure and mechanical properties of pure magnesium have been investigated. The results show that the fine and uniform equiaxed grain with 7.9 μm in average diameters in the pure magnesium can be generated, and its mechanical properties at room temperature are equivalent to that of T6 treated WE43AMB magnesium alloy, by squeezing casting at 150 MPa and squeezing deformation with squeezing ratio of 10.

关 键 词：纯镁 挤压铸造 挤压变形 细晶强化 力学性能 

分 类 号：TG249.2[金属学及工艺—铸造] TG146.22[一般工业技术—材料科学与工程]