Theoretical prediction of forming limit diagram of AZ31 magnesium alloy sheet at warm temperatures

作     者：曹晓卿 徐平平 樊奇 王文先 Xiao-qing CAO;Ping-ping XU;Qi FAN;Wen-xian WANG

作者机构：太原理工大学材料科学与工程学院太原030024 太原理工大学先进镁基材料山西省重点实验室太原030024 

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

年 卷 期：2016年第26卷第9期

页      面：2426-2432页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0813[工学-建筑学] 0814[工学-土木工程] 0702[理学-物理学] 

基　　金：Project(51375328)supported by the National Natural Science Foundation of China Project(20143009)supported by Graduates Innovation Project of Shanxi Province,China Project(2015-036)supported by Shanxi Scholarship Council of China 

主　　题：magnesium alloy forming limit diagram theoretical prediction yield criterion sheet warm forming 

摘      要：A theoretical prediction on forming limit diagram（FLD） of AZ31 magnesium alloy sheet was developed at warm temperatures based on the M-K theory. Two different yield criteria of von Mises and Hill＇48 were applied in this model. Mechanical properties of AZ31 magnesium alloy used in the prediction were obtained by uniaxial tensile tests and the Fields-Backofen equation was incorporated in the analysis. In addition, experimental FLDs of AZ31 were acquired by conducting rigid die swell test at different temperatures to verify the prediction. It is demonstrated from a comparison between the predicted and the experimental FLDs at 473 K and 523 K that the predicted results are influenced by the type of yield criterion used in the calculation, especially at lower temperatures. Furthermore, a better agreement between the predicted results and experimental data for AZ31 magnesium alloy sheet at warm temperatures was obtained when Hill＇48 yield criterion was applied.