Deformation of a Low-Cost Ti-6A1-4V Armor Alloy Under Shock Loading

Abstract

The shock behavior of a new, low-cost Ti-6Al-4V alloy has been characterized up to stress levels of 20 GPa. Examination of the particle velocity histories obtained from specimens of the alloy during 11 plate-on-plate impact/planar shock wave experiments indicates that the alloy deforms in an elastic-plastic manner. The magnitude of the Hugoniot Elastic Limit (HEL) lies between 2.0 and 3.0 GPa and appears to be dependent upon material thickness. Plastic shock velocity increases with increasing stress and varies from 5.20 to 5.53 mm/microsecond. Reshock experiments indicate material work hardening. Shear strength sustained during plastic deformation also tends to increase with stress and ranges from 0.5 to 0.9 GPa. Spall strength thresholds tend to vary with changes in pulse width and ranges from 3.1 to 4.2 GPa.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2001
Accession Number
ADA386527

Entities

People

  • Dattatraya P. Dandekar
  • Stephen V. Spletzer

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Elastic Waves
  • High Pressure
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Military Research
  • New York
  • Particles
  • Plastic Deformation
  • Projectiles
  • Secondary Waves
  • Shear Strength
  • Shock
  • Shock Waves
  • Subatomic Particles
  • Waves

Fields of Study

  • Physics

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy