Formability evaluation of AZ31B extruded tube for hydroforming process

作     者：HE Zhubin,LIU Gang,YUAN Shijian,and LIANG Yingchun School of Materials Science & Engineering,Harbin Institute of Technology,Harbin 150001,China HE Zhubin,LIU Gang,YUAN Shijian,and LIANG Yingchun School of Materials Science & Engineering,Harbin Institute of Technology,Harbin 150001,China

作者机构：Harbin Inst Technol Sch Mat Sci & Engn Harbin 150001 Peoples R China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2007年第26卷第S1期

页      面：83-87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：This work is financially supported by the National Natural Science Fund for Distinguished Young Scholars(No50525516) the Specialized Research Fund for the Doctoral Program of Higher Edu-cation (No20050213041) 

主　　题：AZ31B magnesium alloy extruded tube hydrobulging test porthole die extrusion 

摘      要：Hydroforming of magnesium and aluminum alloy tube at elevated temperature is becoming a very promising method to manufacture light-weight hollow *** tensile test and hydrobulging test were used to investigate the formability of AZ31B magnesium tube at different *** tube was manufactured by porthole die *** show that as temperature increase,the tension formability along the extrusion direction measured by tensile test increases significantly,whereas the maximum hydrobulging ratio measured by hydrobulging test does not change *** anisotropy character of the tube,i.e.,different properties in axial direction and hoop direction,is mainly dependant on the extrusion *** addition,there exists several weld lines along the extrusion *** weld lines will become the weakest positions when formed at elevated temperature,and will consequently decrease the formability of the tube during hydroforming process.