Texture adjustment approach of magnesium alloys via variable strain path calculated by an integrated finite element-viscoplastic self-consistent model  

作　　者：Wenjie Wu Wenzhen Chen Xiaoyu Wang Wenke Wang Wencong Zhang Xinhua Liu Hyoung Seop Kim 

机构地区：[1]School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China [2]Key Laboratory for Advanced Materials Processing(MOE),Institute for Advanced Materials and Technology,University of Science and Technology Beijing,Beijing 100083,China [3]Graduate Institute of Ferrous&Energy Materials Technology(GIFT),Pohang University of Science and Technology(POSTECH),Pohang 37673,South Korea [4]Advanced Institute for Materials Research(WPI-AIMR),Tohoku University,Sendai 9808577,Japan

出　　处：《Journal of Materials Science & Technology》2024年第17期15-31,共17页材料科学技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51975146,52205344);Shandong Province Natural Science Foundation(Grant No.ZR2020QE171);supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIP)(Nos.NRF-2021R1A2C3006662,NRF-2022R1A5A1030054).

摘　　要：An integrated calculated approach based on weakly coupled finite element(FEM)-viscoplastic selfconsistent(VPSC)model was established to simulate the texture evolution during the variable strain path extrusion process of magnesium alloys.The spiral die extrusion(SDE)process with additional circumferential shear deformation was applied to investigate the effect of path control on texture adjustment and verify the accuracy of the model.The results indicated that the additional spiral shear resulting from the overall inclined flow path effectively reduced the intensity of the{0002}//ED fiber texture by suppressing basal slip activation in the core area,while the local shear deformation along the spiral equal channel strain path led to the formation of an inclined{0002}//ND plane texture on the side.Using the modified Hall-Petch relationship,the correlation between texture and yield strength was quantified.Specifically,the weakening of the texture effectively suppressed{10-12}tensile twinning,which compensated for the deficiency of compressive yield strength without significantly sacrificing tensile yield strength,and thus improved the tension-compression asymmetry.Furthermore,the strongly inclined{0002}//ND plane texture inhibited the widespread activation of basal slip during tensile yielding,thereby enhancing the yield strength.

关 键 词：Integrated calculated approach Strain path control Texture adjustment Spiral die extrusion Viscoplastic self-consistent 

分 类 号：TG146.22[一般工业技术—材料科学与工程]