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

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

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An integrated calculated approach based on weakly coupled finite element(FEM)-viscoplastic self-consistent(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 circumfer-ential 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 tex-ture inhibited the widespread activation of basal slip during tensile yielding,thereby enhancing the yield strength.

Integrated calculated approachStrain path controlTexture adjustmentSpiral die extrusionViscoplastic self-consistent

Wenjie Wu、Wenzhen Chen、Xiaoyu Wang、Wenke Wang、Wencong Zhang、Xinhua Liu、Hyoung Seop Kim

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School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China

Key Laboratory for Advanced Materials Processing(MOE),Institute for Advanced Materials and Technology University of Science and Technology Beijing,Beijing 100083,China

Graduate Institute of Ferrous & Energy Materials Technology(GIFT),Pohang University of Science and Technology(POSTECH),Pohang 37673,South Korea

Advanced Institute for Materials Research(WPI-AIMR),Tohoku University,Sendai 9808577,Japan

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaShandong Province Natural Science FoundationNational Research Foundation of Korea(NRF)grant funded by the Korea government(MSIP)National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIP)

5197514652205344ZR2020QE171NRF-2021R1A2C3006662NRF-2022R1A5A1030054

2024

10.1016/j.jmst.2023.09.054

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.184(17)
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