摘要
研究高强度变形镁合金ZK60经喷丸处理后的表面变形层微观组织结构的变化及其对高周疲劳性能的影响。结果表明:ZK60镁合金的最佳喷丸强度(N试片)为0.05mm,经喷丸强化后,ZK60镁合金表面变形层的微观组织和织构发生变化,疲劳强度由140MPa提高到180MPa,提高约29%,疲劳寿命得到显著提高;ZK60镁合金也表现出明显的过喷效应。
The influence of shot peening on the microstructure of surface layer and high cycle fatigue properties of high-strength wrought ZK60 magnesium alloy was studied. The results show that shot peening effectively improve the fatigue properties. Both the surface microstructure and texture of ZK60 magnesium alloy change greatly after shot peening. The fatigue limit increases from 140 to 180 MPa after shot peening with the optimum Almen intensity of 0.05 mm, the improvement of 29% in fatigue limit is achieved, and the fatigue life is significantly increased. In addition, the magnesium alloy ZK60 shows an obvious overpeening effect.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2009年第10期1733-1740,共8页
The Chinese Journal of Nonferrous Metals
基金
国家重点基础研究发展计划资助项目(5133001A)
上海市浦江人才计划资助项目(06PJ14062)
关键词
ZK60镁合金
喷丸
疲劳性能
ZK60 magnesium alloy
shot peening
fatigue properties
