摘要
考察了ＪＺ钢微动疲劳性能以及微动频率和接触压力等因素对微动疲劳寿命的影响，采用宏观力学试验与微观分析结合的方法探讨了ＪＺ钢微动疲劳裂纹的萌生和扩展机制．
The fretting fatigue behavior of JZ steel and the influence of fretting frequency and contact pressure on the fatigue life of the steel have been studied. The fretting fatigue fracture process of JZ steel has been investigated by means of fatigue testing and scanning electron microscopic analysis. It has been found that the fatigue strength of JZ steel decreases by about 50% at fretting condition. Its fretting fatigue strength decreases with increase of contact pressure below 80 MPa but comes to low stable value above 80 MPa. The fretted fatigue cracks of JZ steel were initiated by local stress concentration near the fretted and non fretted interface regions.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
1999年第4期358-361,共4页
Tribology
基金
甘肃省自然科学基金!(29007)
关键词
中碳结构钢
微动疲劳
疲劳寿命
medium carbon constructional steel
fretting fatigue
fatigue life
