摘要
总结了航空常用超高强度钢0Cr13Ni8Mo2Al,30CrMnSiNi2,16Co14Ni10Cr2MoA和40CrNi2Si2MoVA喷丸强化所产生的残余压应力场特征,研究了喷丸所造成的表面粗糙度和表面残余应力等表面完整性变化,初步定性探讨了超高强度钢喷丸强化后表面完整性的改善及其对疲劳性能的影响。结果表明,喷丸可显著提高疲劳寿命和有效提高疲劳极限,而且对某一给定材料而言存在一个最佳的喷丸规范。
The characteristics of compressive residual stress fields induced by shot peening in OCr13Ni8Mo2Al, 30CrMnSiNi2A, 16Col4NilOCr2Mo and 40CrNi2Si2MoVA ultra-high strength steels, used widely in aeronautical industry, were investigated. The change of surface integrity including surface residual stress, surface roughness as well as its effects on fatigue properties were studied. The results show that the fatigue limits of ultra-high strength steels can be increased .by shot peening because the surface integrity can be improved by shot peening, and that for a given steel there is a appropriate peening intensity under which the fatigue property of this steel is optimum.
出处
《航空材料学报》
EI
CAS
CSCD
2003年第z1期132-135,共4页
Journal of Aeronautical Materials
关键词
超高强度钢
喷丸
表面完整性
残余应力
疲劳
ultra-high strength steels
shot peening
surface integrity
residual stress
fatigue
