金属材料超高周疲劳研究综述

REVIEW OF RESEARCH ON VERY HIGH CYCLE FATIGUE OF METAL MATERIALS

从20世纪80年代日本的学者提出钢铁材料在超过107的应力循环出现疲劳破坏的现象后,到20世纪90年代这一现象得到欧洲学者的重视,并通过很多合金的1010应力循环的超声疲劳实验数据证明这一现象的存在。至此,超高周疲劳研究在国际上逐渐成为疲劳研究领域的一个热点。文中论述金属材料超高周疲劳研究的背景及意义,介绍最近几年超高周疲劳的研究成果,回顾金属疲劳研究的历史,明确超高周疲劳在疲劳研究史上的地位,提出今后超高周疲劳研究的课题。

As mentioned by Japanese researchers, during 1980s, steel can fail after 10 cycles, since the very high cycle fatigue failure in many alloys was experimentally proved up to 10 cycles using ultrasonic machines by European researchers very recently. Up to now, the research on very high cycle fatigue has been a new topic of great interest. Firstly, the background and signification of research on very high cycle fatigue are presented. Then, research achievements are introduced on very high cycle fatigue in recent years. Finally, the historical stages of metal fatigue are reviewed and some tasks in future are pointed out.