Effect of driver roll rotational speed on hot ring rolling of AZ31 magnesium alloy

作     者：Xiaodong Luo Lianjie Li Wenlin Xu Yongxiang Zhu 

作者机构：College of Metallurgical and Materials EngineeringChongqing University of Science and TechnologyChongqing 400041China College of Materials Science and EngineeringChongqing UniversityChongqing 400044China 

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

年 卷 期：2014年第2卷第2期

页      面：154-158页

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：The authors are grateful for the financial support of Project Supported by:Chongqing Municipal Engineering Research Center of Institutions of Higher Education(cstc2011ptgc70007) Project Supported by Program for Innovation Team Building at Institutions of Higher Education in Chongqing(201028) Achievement Transfer Program of Institutions of Higher Education in Chongqing(kjzh11221) 

主　　题：Rotational speed of driver roll AZ31 magnesium alloy FEM Ring rolling 

摘      要：Based on the ABAQUS/Explicit code,A 3D elastic-plastic and coupled thermo-mechanical FE model of radial ring rolling of AZ31 Magnesium alloy has been proposed to analyze the influence of rotational speed of driver roll to study the inhomogeneity distribution of strain and temperature,fishtail coefficient,rolling force *** results show that:(1)when the rotational speed of driver roll n increases,the strain distribution of the rolled ring becomes less homogeneous,and the temperature distribution more homogeneous yet,and leading to an optimal n value;(2)the fishtail coefficient firstly decreases,then increases with the increase of n;(3)the rolling force,contact area and rolling moment gradually descend with the increase of n.