Influence of microstructure and strain rate on adiabatic shearing behavior in Ti-6Al-4V alloys

Xinqin Liu, Chengwen Tan*, Jing Zhang, Yangguang Hu, Honglei Ma, Fuchi Wang, Hongnian Cai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)

Abstract

Adiabatic shearing behavior of Ti-6Al-4V alloys with bimodal and lamellar microstructures is investigated at strain rates ranging from 103 s-1 to 104 s-1 by Spilt Hopkinson Pressure Bar and Taylor impact. The characteristic of fracture is closely related with the behavior of adiabatic shear band in Ti-6Al-4V alloys. In bimodal microstructure at strain rate of 103 s-1, the adiabatic shear bands are regularly spaced and orientated along the maximum shear stress plane. In case of the lamellar microstructure, when the strain rates increase from 4000 s-1 to 6000 s-1, the adiabatic shear bands go through the transition from self-organization to branching off and interconnecting into a net-like structure. At strain rate of 104 s-1 by Taylor impact, the regularly spaced adiabatic shearing cracks cause that the fracture surface makes an angle of 45° with the impacted end of the projectile in bimodal microstructure. The net-like adiabatic shearing cracks in lamellar microstructure result in the fragmentation of the projectile head, the angle is about 0°.

Original languageEnglish
Pages (from-to)30-36
Number of pages7
JournalMaterials Science and Engineering: A
Volume501
Issue number1-2
DOIs
Publication statusPublished - 15 Feb 2009

Keywords

  • Adiabatic shear band
  • Fracture
  • Microstructure
  • Strain rate
  • Ti-6Al-4V

Fingerprint

Dive into the research topics of 'Influence of microstructure and strain rate on adiabatic shearing behavior in Ti-6Al-4V alloys'. Together they form a unique fingerprint.

Cite this