The Bauschinger Effect in 6-6-2 Titanium Alloy and Its Influence on Advanced Artillery Projectiles

Abstract

The Bauschinger effect may be defined as a phenomenon by which plastic deformation of a polycrystalline material causes a reduction in yield strength upon reloading in a direction opposite to the original direction. This characteristic of plastic flow results from the inhomogeneity of plastic flow on the microscopic level. In this report, the Bauschinger effect in 6-6-2 titanium alloy is evaluated and an illustration is given to demonstrate its importance in the design and reliability of the Army's advanced artillery projectiles. The tension-compression specimens, fabricated from the recovered projectiles, are loaded to compression to a specified plastic range, followed by tension after unloading. The experimental results indicate that the original yield strength of the material is greatly reduced due to reverse loading. Keywords: Titanium alloys; Aluminum/vanadium/tin; XM-785 projectiles.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1989
Accession Number
ADA209355

Entities

People

  • Hemen Ray

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Alloys
  • Artillery
  • Gun Barrels
  • Materials
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Modulus Of Elasticity
  • Plastic Explosives
  • Plastic Flow
  • Projectiles
  • Residual Stress
  • Strain Gages
  • Stresses
  • Tensile Stress
  • Yield Strength

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Munitions and Ordnance Engineering