%0 Journal Article
%T THE FATIGUE LIMIT ESTIMATION METHODS FOR ALLOY STEELS AND ALUMINUM ALLOYS<br>合金钢与铝合金疲劳极限的理论估算方法分析
%A QIAO Yanjiang
%A SUN Qiang
%A LI Chunwang
%A LI Jing
%A ZHANG Zhongping
%A <br>乔艳江
%A 孙强
%A 李春旺
%A 李静
%A 张忠平
%J 力学与实践
%D 2007
%I 
%X Based on the mechanical properties of twenty- seven alloy steels and aluminum alloys, the theoretical fatigue limits are analyzed with three methods. It is found that in the three methods only two can give a proper estimate of the fatigue limits. Moreover, when the relationship among the strength coefficient, the strain- hardening exponent and the mechanical properties is considered, the two methods can be used to estimate the fatigue limits from the conventional mechanical estimation may be lifted. properties. The limitation of high strength steel in the
%K fatigue limit
%K strength coefficient
%K strain-hardening exponent
%K fracture ductility
%K ultimate strength<br>疲劳极限
%K 强度系数
%K 应变硬化指数
%K 断裂延性
%K 抗拉强度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=0BF5C9FB031A532ED0A6D99DC4F6181A&aid=FC9FC5F380B3C080&yid=A732AF04DDA03BB3&vid=771469D9D58C34FF&iid=E158A972A605785F&sid=F4B561950EE1D31A&eid=771152D1ADC1C0EB&journal_id=1000-0879&journal_name=力学与实践&referenced_num=0&reference_num=9