摘要
在现代工业中,许多钢结构被要求承受108以上的疲劳载荷,钢的超高周疲劳性能研究已成为疲劳研究领域的一大热点。对当前国内外钢的超高周疲劳性能及其影响因素研究进行了综述,主要介绍了超高周疲劳S-N曲线、超高周疲劳裂纹萌生和扩展机理以及几个超高周疲劳性能影响因素,并提出了以后在超高周疲劳问题研究中需要进一步研究的方向,为当前超高周疲劳研究提供一个参考。
In the modem industry, many steel structures are required to bear the fatigue load more than 10＂ cycles, so the research of ultra-long-life fatigue properties of steel has become a hot-spot in the research of the fatigue field. The research status and progress on fatigue properties of steel in ultra-long-life regime and its influencing factors are reviewed in this paper, which mainly introduced the S-N curves, the mechanism of crack initiation and propagation, and several impact factors of ultra-long-life fatigue of steel. Besides, several points which need further research on ultra-long-life fatigue of steel are put forward to provide a reference for the current research.
出处
《钢铁》
CAS
CSCD
北大核心
2016年第10期62-68,共7页
Iron and Steel
基金
国家自然科学基金资助项目(51365014)
关键词
超高周疲劳
S-N曲线
裂纹萌生与扩展
影响因素
very high cycle fatigue
S-N curves
crack initiation and propagation
impact factors
