Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 7-8, Pages 3130-3133Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2010.12.068
Keywords
Adiabatic shear; Titanium alloy; Adiabatic shear sensitivity
Categories
Funding
- National Nature Science Foundation of China [50971134]
- PLA General Armament Department [9140Al2011610BQ1901]
- key project of State Key Laboratory of Explosion Science and Technology [KFJJ09-1]
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The effects of microstructure on the adiabatic shearing behaviors in the Ti-1300 alloy were investigated by means of the split Hopkinson pressure bar (SHPB) with hat-shaped specimens. Shear bands were developed in both Ti-1300 alloys withi beta phase and alpha +beta lamellar microstructures during a forced dynamic shear deformation. The microstructures have a significant influence on the adiabatic shearing behaviors of Ti-1300 alloy. The critical strain for the initiation of shear bands in alpha+beta lamellar microstructure is less than that in beta phase microstructure. The alpha + beta lamellar microstructure experiences more extensive microscopic damage than beta phase microstructure. Therefore, the alpha + beta lamellar microstructure is more susceptive to adiabatic shear localization deformation than beta phase microstructure at the same strain rate. (C) 2010 Elsevier B.V. All rights reserved.
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