HIGH CYCLE FATIGUE PROPERTIES OF AN AA2524 ALUMINUM ALLOY IN FOUR-POINT BEND

摘要：

Four-point bend fatigue tests were conducted on an AA2524 T34 Al alloy,along the rolling direction at room temperature and frequency of 15 Hz,R = 0.1,in air.It was found that the fatigue limit of the alloy was 87％ of its yield strength,almost doubled that of its predecessor,an AA2024 Al alloy.Cracks were initiated predominantly at coarse particles but occasionally at grain boundaries on the surface.Crack propagation was in a crystallographic form.The coarse particles in the AA2524 Alloy were much less than those in an AA2024 alloy,which contributed significantly to the superior fatigue properties in this alloy.

关键词： AA2524 Al alloy four-point bend fatigue high cycle fatigue properties fatigue crack initiation

作者: T.Li Zhiguo Chen Ziqiao Zheng X.P.Jiang Q.Y.Wang T.Zhai

作者单位: College of Civil Engng.and Architecture,Soutwest Univ.of Science and Technology,Mianyang,Sichuan 621 School of Materials Science and Engineering,Central South University,Changsha,Hunan 410083,ChinaScho Dept.of Chemical and Materials Engineering,University of Kentucky,KY 40506,USA Department Mechanics of Science and Engng.,Sichuan University,Chengdu,Sichuan 610065,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1224-1227

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）