镁合金疲劳性能的研究现状及展望  

Present and development of research on fatigue properties of magnesium alloys

作　　者：刘文才[1] 董杰[1] 张平[1] 翟春泉[1] 

机构地区：[1]上海交通大学轻合金精密成型国家工程研究中心

出　　处：《轻金属》2008年第7期44-49,共6页Light Metals

基　　金：973计划科研项目(5133001A)

摘　　要：总结了近些年镁合金疲劳性能的研究,阐述了镁合金疲劳裂纹萌生和扩展理论,介绍了显微组织、冶金因素、环境介质、平均应力、温度等方面对镁合金疲劳性能的影响情况,归纳了提高镁合金疲劳强度和疲劳寿命的主要手段:表面形变强化、表面涂层处理、原料质量的改善以及晶粒细化等。展望了镁合金疲劳性能的研究前景。This paper summarizes the studies on fatigue properties of magnesium alloys in recent years. The theory of crack initiation and crack propagation is expounded. The influence of material factors including microstructure, metallurgy, corrosive media, mean stress, temperature on fatigue properties of magnesium alloys are analyzed. The strengtherfing methods can be used to surface plastic deformation strengthening, coating, quality improvement of the bulk material and grain refinement. In addition, the prospect of fatigue properties observation of magnesium alloys is discussed as well.

关 键 词：镁合金 疲劳性能 表面改性 疲劳寿命 

分 类 号：TG146.22[一般工业技术—材料科学与工程]