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10.3390/ma14082044
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Article

Effect of High Strain Rate on Adiabatic Shearing of α+β Dual-Phase Ti Alloy

by
Fang Hao
1,2,
Yuxuan Du
2,*,
Peixuan Li
1,
Youchuan Mao
1,2,
Deye Lin
3,
Jun Wang
1,
Xingyu Gao
4,
Kaixuan Wang
2,
Xianghong Liu
2,
Haifeng Song
4,
Yong Feng
1,2,
Jinshan Li
1 and
William Yi Wang
1,*
1
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
2
Western Superconducting Technologies Co., Ltd., Xi’an 710018, China
3
CAEP Software Center for High Performance Numerical Simulation, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
4
Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
*
Authors to whom correspondence should be addressed.
Materials 2021, 14(8), 2044; https://doi.org/10.3390/ma14082044
Submission received: 1 April 2021 / Revised: 14 April 2021 / Accepted: 15 April 2021 / Published: 19 April 2021
(This article belongs to the Special Issue Light Alloys and High-Temperature Alloys)
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Abstract

In the present work, the localized features of adiabatic shear bands (ASBs) of our recently designed damage tolerance α+β dual-phase Ti alloy are investigated by the integration of electron backscattering diffraction and experimental and theoretical Schmid factor analysis. At the strain rate of 1.8 × 104 s−1 induced by a split Hopkinson pressure bar, the shear stress reaches a maximum of 1951 MPa with the shear strain of 1.27. It is found that the α+β dual-phase colony structures mediate the extensive plastic deformations along α/β phase boundaries, contributing to the formations of ASBs, microvoids, and cracks, and resulting in stable and unstable softening behaviors. Moreover, the dynamic recrystallization yields the dispersion of a great amount of fine α grains along the shearing paths and in the ASBs, promoting the softening and shear localization. On the contrary, low-angle grain boundaries present good resistance to the formation of cracks and the thermal softening, while the non-basal slipping dramatically contributes to the strain hardening, supporting the promising approaches to fabricate the advanced damage tolerance dual-phase Ti alloy.
Keywords: deformation and fracture; microstructure; adiabatic shear bands; Schmid factor; dual-phase deformation and fracture; microstructure; adiabatic shear bands; Schmid factor; dual-phase

Share and Cite

MDPI and ACS Style

Hao, F.; Du, Y.; Li, P.; Mao, Y.; Lin, D.; Wang, J.; Gao, X.; Wang, K.; Liu, X.; Song, H.; et al. Effect of High Strain Rate on Adiabatic Shearing of α+β Dual-Phase Ti Alloy. Materials 2021, 14, 2044. https://doi.org/10.3390/ma14082044

AMA Style

Hao F, Du Y, Li P, Mao Y, Lin D, Wang J, Gao X, Wang K, Liu X, Song H, et al. Effect of High Strain Rate on Adiabatic Shearing of α+β Dual-Phase Ti Alloy. Materials. 2021; 14(8):2044. https://doi.org/10.3390/ma14082044

Chicago/Turabian Style

Hao, Fang, Yuxuan Du, Peixuan Li, Youchuan Mao, Deye Lin, Jun Wang, Xingyu Gao, Kaixuan Wang, Xianghong Liu, Haifeng Song, and et al. 2021. "Effect of High Strain Rate on Adiabatic Shearing of α+β Dual-Phase Ti Alloy" Materials 14, no. 8: 2044. https://doi.org/10.3390/ma14082044

APA Style

Hao, F., Du, Y., Li, P., Mao, Y., Lin, D., Wang, J., Gao, X., Wang, K., Liu, X., Song, H., Feng, Y., Li, J., & Wang, W. Y. (2021). Effect of High Strain Rate on Adiabatic Shearing of α+β Dual-Phase Ti Alloy. Materials, 14(8), 2044. https://doi.org/10.3390/ma14082044

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