FACTORS INFLUENCING THE FATIGUE LIFE OF AN HY-80 COMPOSITION STEEL FULLY QUENCHED AND TEMPERED TO VARIOUS STRENGTH LEVELS

Abstract

The report evaluates the effects of strength level, Charpy V-notch energy, prestraining, prestraining and stress relieving, and austenitizing temperature on the fatigue life of a fully quenched HY-80 steel composition. The fatigue data developed indicate that the designer would have to be cautious when going to higher strength steel when using a safety factor which is considered satisfactory for lower strength steels, i.e., if higher strength steels are to be used, larger safety factors are necessary to obtain a comparable fatigue life. The limited data presented on experimental HY-150 steels indicate that caution will have to be exercised in evaluating large specimen fatigue data.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1964
Accession Number
AD0602075

Entities

People

  • A. R. Willner
  • M. L. Salive

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Engineering
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Grain Size
  • Heat Treatment
  • Materials
  • Microstructure
  • Notch Toughness
  • Safety
  • Safety Factor
  • Steel
  • Stress Relieving
  • Stress Strain Relations
  • Tensile Strength
  • Test And Evaluation
  • Toughness
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Aviation Safety Risk Assessment.
  • Materials Science (Mechanical Engineering).
  • Metallurgy