Orientation dependent behavior of tensile-creep deformation of hot rolled Ti65 titanium alloy sheet

作     者：Zhixin Zhang Jiangkun Fan Ruifeng Li Hongchao Kou Zhiyong Chen Qingjiang Wang Hailong Zhang Jian Wang Qi Gao Jinshan Li Zhixin Zhang;Jiangkun Fan;Ruifeng Li;Hongchao Kou;Zhiyong Chen;Qingjiang Wang;Hailong Zhang;Jian Wang;Qi Gao;Jinshan Li

作者机构：State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi'an 710072China National Local Joint Engineering Research Center for Precision Thermoforming Technology of Advanced Metal MaterialsXi'an 710072China Baoji Titanium Industry Co.Ltd.Baoji 721014China Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Baoti Group Co.Ltd.Baoji 721014China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第75卷第16期

页      面：265-275页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(No.51801156) the Natural Science Basic Research Plan in Shaanxi Province of China(No.2019JM-584) 

主　　题：Titanium alloy Texture Anisotropy Tensile Creep 

摘      要：The mill products like sheet always have one or more severe textures inevitably,and its effect on mechanical properties is not a negligible *** orientation dependent tensile-creep behavior induced by rolling texture of Ti65 titanium alloy sheet has been systematically investigated at 650℃.There are some anisotropic characteristics between TD and RD of Ti65 *** UTS and TYS of TD are higher than RD at 650℃.Besides,the creep endurance time of TD(172.6–174.5 h)is about three times longer than RD(55.6–65.1 h)at 650℃and 240 ***,the grains are inclined to form Texture III■after creep along with TD,but to form Texture I■after creep along with ***,the crack initiation site is different during creep in TD and *** reason for anisotropic properties of tensile and creep has been summarized in two aspects:(i)the change of the SFs(Schmid factors)value between TD and RD;(ii)the difference of creep mechanism between TD(grain boundary sliding)and RD(dislocation slip).Anisotropy of Ti65 sheet should be fully considered to increase structural efficiency in the engineering design and application.