Fatigue Crack Initiation Properties of Welded and Stress Relieved HY 130 Steel.

Abstract

Fatigue initiation studies were performed on a potential hydrofoil material, HY130 steel, using a Tatnal-Krause type fatigue testing machine. The welded HY130 steel shows fatigue endurance properties of 480 MPa (70 Ksi) when in the ground and polished condition, the condition which would be present in the highly stressed areas of a foil. In the as-welded condition, the material shows an endurance limit of 240 MPa (35 Ksi) at a stress ratio of R = + 1/2. Local high residual tensile stresses, due to welding, have little, if any, effect on the fatigue initiation properties of the welded HY130 steel specimens. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA052695

Entities

People

  • B. F. Peters
  • T. P. Nikiforuk

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Chemistry
  • Corrosion
  • Engineering
  • Fabrication
  • Fatigue Tests (Mechanics)
  • Ferrium
  • Heat Treatment
  • Materials
  • Mechanical Working
  • Notch Sensitivity
  • Residual Stress
  • Steel
  • Stresses
  • Surface Properties
  • Surface Roughness
  • Tensile Strength
  • Tensile Stress

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy