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

doi:10.3390/met12050721

Metals (Apr 2022)

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

DOI: https://doi.org/10.3390/met12050721
Journal volume & issue: Vol. 12, no. 5
p. 721

Abstract

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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).

Published in Metals

ISSN: 2075-4701 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.mdpi.com/journal/metals

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