Experimental and numerical analyses of magnesium alloy hot workability

作     者：F.Abbassi M.Srinivasan C.Loganathan R.Narayanasamy M.Gupta 

作者机构：Mechanical engineering departmentcollege of engineeringdhofar universityp.o.box 2509211 salalahoman Urmssdtensituniversity of tunis5 avenue taha husseinbp56bâb manara 1008tunisia Department of mechanical engineeringchartered institute of technologyabu roadsirohirajasthan 307510india Department of production engineeringnational institute of technologytiruchirappallitamil nadu 620015india Department of mechanical engineeringnational university of singapore 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2016年第4卷第4期

页      面：295-301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）] 

主　　题：AZ31B magnesium alloy Hot workability Damage Plastic instability TEM analysis FEM 

摘      要：Due to their hexagonal crystal structure,magnesium alloys have relatively low workability at room *** this study,the hot workability behavior of cast-extruded AZ31B magnesium alloy is studied through hot compression testing,numerical modeling and microstructural *** deformation tests are performed at temperatures of 250℃ to 400℃ under strain rates of 0.01 to 1.0 s^(−1).Transmission electron microscopy is used to reveal the presence of dynamic recrystallization(DRX),dynamic recovery(DRY),cracks and shear *** predict plastic instabilities during hot compression tests of AZ31B magnesium alloy,the authors use Johnson–Cook damage model in a 3D finite element *** optimal hot workability of magnesium alloy is found at a temperature(T)of 400℃ and strain rate(ε)of 0.01 s^(−1).Stability is found at a lower strain rate,and instability is found at a higher strain rate.