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2018 | OriginalPaper | Chapter

Failure Mode of Ductile Hole Formation in Thick Ti–6Al–4V Targets Having Equiaxed and Lamellar Microstructures

Authors : Chao Zheng, Xiurong Zhu, Haiying Xin, Zhiwen Shao, Huan Wang, Huaxin Peng, Xingwang Cheng, Fuchi Wang

Published in: High Performance Structural Materials

Publisher: Springer Singapore

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Abstract

The 40 mm Ti–6Al–4V thick targets having equiaxed and lamellar microstructures were normally impacted by 12.7 mm and 14.5 mm arm-piercing projectiles. The Ti–6Al–4V targets having equiaxed microstructure showed better ballistic impact property compared with the Ti–6Al–4V targets having lamellar microstructure. The analysis of macro-damage and micro-damage features revealed that the failure mode of ductile hole formation in 40 mm thick Ti–6Al–4V targets should be divided into three stages: cratering, steady penetration and perforation. The role that adiabatic shear bands played varied in the different stages of penetration. In the stage of steady penetration, the plastic deformation was concentrated in adiabatic shear bands to coordinate with the squeezing into of the projectile. While in the stage of perforation, adiabatic shear bands were still failure paths for the formation of spalling fragments from the rear surface.

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Metadata
Title
Failure Mode of Ductile Hole Formation in Thick Ti–6Al–4V Targets Having Equiaxed and Lamellar Microstructures
Authors
Chao Zheng
Xiurong Zhu
Haiying Xin
Zhiwen Shao
Huan Wang
Huaxin Peng
Xingwang Cheng
Fuchi Wang
Copyright Year
2018
Publisher
Springer Singapore
DOI
https://doi.org/10.1007/978-981-13-0104-9_53

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