Plastic Deformation Mechanism and Slip Transmission Behavior of Commercially Pure Ti during In Situ Tensile Deformation
Chao Xin,
Qi Wang,
Junqiang Ren,
Yonghong Zhang,
Jinping Wu,
Jie Chen,
Liang Zhang,
Biao Sang,
Le Li
Affiliations
Chao Xin
Xi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710049, China
Qi Wang
School of Energy Engineering, Huanghuai University, Zhumadian 463000, China
Junqiang Ren
State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
Yonghong Zhang
School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China
Jinping Wu
Xi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710049, China
Jie Chen
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
Liang Zhang
School of Energy Engineering, Huanghuai University, Zhumadian 463000, China
Biao Sang
School of Materials Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China
Le Li
State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Department of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
The plastic deformation modes of commercially pure titanium (CP-Ti) were studied using an in situ tensile test monitored by electron-backscatter-diffraction (EBSD) assisted slip trace analysis. The plastic strain was primarily accommodated by prismatic slip, followed by deformation twins and pyramidal slip. The slip transmission between two adjacent grains was predicted using the geometric compatibility factor m′, which influenced not only the degree of stress concentration but also the activity of dislocation slip systems. Stress concentration mainly occurred at GBs with an m′ less than 0.5 and could be released by the activities of pyramidal slip or deformation twins with high critical shear stress (CRSS).
