The Effects of Surface Layer on Plastic Deformation and Crack Propagation

Abstract

Metallographic evidence of the existence of the surface layer is given. A relationship is given between the surface-layer stress and fatigue failure. Surface-layer stress at the root of notches is reported. The crack propagation rate for an iron-silicon alloy is reported. An attempt to detect slip-line formation and strain under sustained loads up to 500 hr. is reported.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1972
Accession Number
AD0748098

Entities

People

  • Avinash Kumar
  • I. R. Kramer

Organizations

  • Martin Marietta

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Creep
  • Fatigue Life
  • Hardness
  • Low Temperature
  • Materials
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Metals
  • Plastic Flow
  • Resistance
  • Single Crystals
  • Stress Concentration
  • Stress Corrosion
  • Stress Strain Relations
  • Stresses
  • Titanium

Readers

  • Materials Science (Mechanical Engineering).