STRESS-CORROSION CRACKING IN THE HAWK MOTOR CASE

Abstract

Samples from the girth weld in the forward motor case of the HAWK missile were evaluated for susceptibility to stress-corrosion. Eight motor cases were fabricated from AISI-4132 steel using two different resistance weld cycles and four heat treatments. Welding in the heat treated condition gave the greatest resistance to stress-corrosion; however, the strength of the case was lowered in the heat affected zone. Samples that were normalized prior to quench and tempering had the poorest resistance to stress-corrosion. Welding, heat treating in salt, and sealing the crevice between the dome and the shell with a potting compound is the most effective method of preventing stress-corrosion in the HAWK motor case.

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Document Details

Document Type
Technical Report
Publication Date
Jan 18, 1967
Accession Number
AD0379338

Entities

People

  • William T. Mcclane

Organizations

  • United States Army Aviation and Missile Command

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Alloys
  • Buildings And Structures
  • Classification
  • Contractors
  • Corrosion
  • Engineering
  • Heat Treatment
  • Materials
  • Materials Engineering
  • Mechanics
  • Microstructure
  • Steel
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Tempering
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Metallurgy