Structural Properties of Dual Hardness Steel Armor

Abstract

f a high-hardness, high-carbon frontal plate metallurgically bonded to a softer lower carbon steel backup. Since the concept of DHS used for both structural and armor purposes is new, relatively little information is available to designers on the structural properties after ballistic impact. In the present paper, four different lots of (DHS) having target hardness levels of Rc 60 for the frontal portion and Rc 50 for the backup are considered. One lot was produced by standard ausforming techniques while the other three were conventionally produced heat-treatable roll-bonded steels. Base-line mechanical property data are given. These include tensile, fatigue crack propagation, and S-N behavior. The effects of varying temperature and frequency on crack propagation rate are shown. Ballistically damaged specimens are used to provide information on residual strength and residual life.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1973
Accession Number
AD0759506

Entities

People

  • Albert A. Anctil
  • Charles H. Curll
  • Eric B. Kula
  • Richard Chait

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Ammunition
  • Armor Plate
  • Composite Materials
  • Crack Propagation
  • Dual Hardness
  • Fabrication
  • Failure Mode And Effect Analysis
  • Hardness
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Projectiles
  • Structural Properties
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy