%0 Journal Article
%T The relationship between fatigue life and grain size of polycrystalline metals<br>多晶体金属疲劳寿命随晶粒尺寸变化的理论研究
%A Li Mei-Juan
%A Hu Hai-Yun
%A Xing Xiu-San
%A <br>李眉娟
%A 胡海云
%A 邢修三
%J 物理学报
%D 2003
%I 
%X In order to explore the effect of grain size on fatigue life, a formula of fatig ue life for polycrystalline metals,which depends on the grain size and cyclic st rain amplitude, is derived based on the non-equilibrium statistical theory of fa tigue fracture and the model of interface energy. Subsequently, the fatigue life s of pure copper and 70-30 brass with different grain sizes are calculated accor ding to the formula which is achieved in this paper, and the results are in agre ement with the experimental results.
%K fatigue life
%K grain size
%K non-equilibrium statistical theory
%K model
%K of interface energy<br>疲劳寿命，
%K 晶粒尺寸，
%K 非平衡统计理论，
%K 界面能模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=1CE34B382E9C2FB0&yid=D43C4A19B2EE3C0A&vid=286FB2D22CF8D013&iid=5D311CA918CA9A03&sid=7C96F677D586AB70&eid=938DF4F02EA7B2E0&journal_id=1000-3290&journal_name=物理学报&referenced_num=2&reference_num=14