Microstructural Development around Crater in Commercial Pure Titanium

Abstract:

The commercial pure titanium plate was shot vertically by the projectile with a diameter of 7.62mm at impact velocities ranging from 782m/s to 825m/s. The microstructure around the crater of commercial pure titanium plate was analyzed by optical microscopy (OM) and electron backscatter diffraction (EBSD) methods. It was found that different microstructures were observed along the depth of cater. In upper region of the crater, grains were deformed and fragmented. Adiabatic shear bands (ASBs) were observed in the middle of the crater, and some ASBs were bifurcated. At the bottom of the crater, the grains were less deformed, and the deformation twins were formed. The microstructures in the center of adiabatic shear band were mainly consisted of the dynamic recrystallization grains and sub-grains. The microstructure in the transition region was elongated grains along the shear stress distribution.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 238-244
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.238
• Online since: March 2016
• Authors: Ying Chao Li*, Bo Long Li, Tong Bo Wang, Zhen Qiang Wang, Zuo-Ren Nie
• Keywords: Adiabatic Shear Band, Ballistic Shoot, Commercial Pure Titanium, Deformation Twins, Dynamic Recrystallization

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