The complex micromechanical response among grains remains a persistent challenge to understand the deformation mechanism of titanium alloys during cold rolling.Therefore,in this work,a multiscale crystal plasticity finite element method of dual-phase alloy was proposed and secondarily developed based on LS-DYNA software.Afterward,the texture evolution and slip mode of a Ti-5.5Mo-7.2Al-4.5Zr-2.6Sn-2.1Cr alloy,based on the realistic 3D microstructure,during cold rolling(20％thickness reduction)were sys-tematically investigated.The relative activity of the<1120>{0001}slip system in the α phase gradually increased,and then served as the main slip mode at lower Schmid factor(<0.2).In contrast,the contri-bution of the<1123>{1011}slip system to the overall plastic deformation was relatively limited.For theβ phase,the relative activity of the<111>{110}slip system showed an upward tendency,indicating the important role of the critical resolved shear stress relationship in the relative activity evolutions.Further-more,the abnormally high strain of very few β grains was found,which was attributed to their severe rotations compelled by the neighboring pre-deformed α grains.The calculated pole figures,rotation axes,and compelled rotation behavior exhibited good agreement to the experimental results.

Duoduo Wang;Qunbo Fan;Xingwang Cheng;Yu Zhou;Ran Shi;Yan Qian;Le Wang;Xinjie Zhu;Haichao Gong;Kai Chen;Jingjiu Yuan;Liu Yang

National Key Laboratory of Science and Technology on Materials Under Shock and Impact,School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,China;Beijing Institute of Technology Chongqing Innovation Center,Chongqing 401135,China;Microstructure and Properties of Materials(IEK-2),Forschungszentrum Jülich,Jülich,Germany;Chengdu Advanced Metal Materials Industrial Technology Research Institute Co,Ltd,Chengdu 610000,China

材料科学技术（英文版）

[1]Duoduo Wang;Qunbo Fan;Xingwang Cheng;Yu Zhou;Ran Shi;Yan Qian;Le Wang;Xinjie Zhu;Haichao Gong;Kai Chen;Jingjiu Yuan;Liu Yang-.Texture evolution and slip mode of a Ti-5.5Mo-7.2Al-4.5Zr-2.6Sn-2.1Cr dual-phase alloy during cold rolling based on multiscale crystal plasticity finite element model)[J].材料科学技术（英文版）,2022(16):76-87

6Sn,compelled

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