XU Z C, YANG W J, FAN J F,et al.Effect of multidirectional compression on microstructure，texture evolution of TC4 alloy[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(4):188-196.

doi:10.16186/j.cnki.1673-9787.2021110103

Received:2021/11/24

Revised:2021/12/31

Published:2023/07/25

Effect of multidirectional compression on microstructure，texture evolution of TC4 alloy

XU Zhichao1, YANG Wenju1, FAN Jianfeng2, GUO Xuefeng1, GAO Zeng1, WU Tao1

1.School of Materials Science and Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China;2.Key Laboratory of Interface Science and Engineering of Advanced Materials， Ministry of Education，Taiyuan  030024，Shanxi，China

Abstract:In order to investigate the influence of multi-directional compression process parameters on the microstructure and texture evolution of TC4 alloy，transmission electron microscopy （TEM） and electron backscatter diffraction （EBSD） techniques were used to systematically study the changes in microstructure and texture of TC4 alloy under multi-directional compression process.The experiment results showed that the grain size decreased with the increase of cumulative strain，especially on the easy deformation zone.After four deformation cycles，the average grain size was refined from 4.8 μm to 0.14 μm.The microstructure was mainly consisted of fine equiaxed grains，and the overall uniformity of the organization was improved.Meanwhile，with the increase of deformation cycle，fine recrystallized grains were obtained.After the first cycle of multidirectional compression，owing to the transformation of external load axis，the degree of texture diffusion increased and the texture density increased.The dominant crystallographic texture components developed during compression were ｛0002｝<100> and｛0002｝<110> basal texture. With the increase of the number of cycles，the density of texture decreased and the degree of dispersion of texture increased.The dominant crystallographic texture components were mainly ｛010｝<112>; non basal texture.The research results can provide theoretical and practical basis for the production process and texture control of TC4 alloy.

Key words:TC4 alloy;multidirectional compression;microstructure;texture

多向压缩对TC4合金组织和织构演变规律的影响_徐志超.pdf