Fatigue properties of rolled AZ31B magnesium alloy plate

作     者：S.MORITA N.OHNO F.TAMAI Y.KAWAKAMI 

作者机构：Faculty of Science and EngineeringSaga University Material and Environment DepartmentIndustrial Technology Center of Saga 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2010年第20卷第B07期

页      面：523-526页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：JGC-S Scholarship Foundation Iketani Science and Technology Foundation 

主　　题：magnesium alloy compressive proof stress fatigue strength crack initiation crack propagation 

摘      要：Fatigue strength,crack initiation and propagation behavior of rolled AZ31B magnesium alloy plate were investigated. Axial tension-compression fatigue tests were carried out with cylindrical smooth *** types of specimens were machined with the loading axis parallel(L-specimen)and perpendicular(T-specimen)to rolling *** compressive 0.2%proof stress,tensile strength and tensile elongation were similar for both *** the other hand,monotonic tensile 0.2%proof stress of the L-specimen was slightly higher than that of the ***,monotonic compressive 0.2%proof stresses were lower than tensile ones for both *** fatigue strengths of 107cycles of the L-and T-specimens were 95 and 85 MPa,respectively. Compared with the monotonic compressive 0.2%proof stresses,the fatigue strengths were higher for both *** other words, the fatigue crack did not initiate and propagate even though deformation twins were formed in compressive stress under the cyclic tension-compression *** fatigue crack initiated at early stage of the fatigue life in low cycle regime regardless of specimen *** crack growth rate of the L-specimen was slightly lower than of the ***,the fatigue lives of the L-specimen were longer than those of the T-specimen in low cycle regime.