Anisotropy of Mechanical Behavior in Commercially Pure Titanium Sheets

作     者：Qiang Cao Qingdong Zhang Xiaofeng Zhang 

作者机构：School of Mechanical EngineeringUniversity of Science and Technology Beijing 

出 版 物：《Journal of Harbin Institute of Technology(New Series)》 (哈尔滨工业大学学报（英文版）)

年 卷 期：2015年第22卷第1期

页      面：63-67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：Sponsored by the Key Technologies R&D Program(Grant No.2011BAE13B05) the National Natural Science Foundation of China(Grant No.51075031) 

主　　题：commercially pure titanium anisotropy yield criter 

摘      要：Commercially pure titanium( CP Ti) sheets show typical planar anisotropy due to inherently crystallographic texture and rolling process. To characterize the initial,planar,plastic anisotropy of CP Ti sheets in forming process,uniaxial tensile tests of cold-rolled TA1 sheets at 0°,45° and 90° to the rolling direction were performed at room temperature,corresponding stress-strain curves and Lankford coefficient( r value) were obtained. Based on Hill 48 and Barlat 89 yield criteria,the anisotropic behavior of TA1 sheets was investigated. In order to verify the accuracy of two models,the experimental values of yield stress and r were compared with predicted ones. It revealed that Barlat 89 criterion with M = 6 is the best agreement with experimental data,and the obtained model can be used in the simulation of forming process.