Fatigue Variability in Through-Transus Processed Ti-6Al2Sn-4Zr-6Mo (Preprint)

Abstract

Variability in fatigue behavior of a through-transus forged titanium alloy was examined. Through-transus forging develops a microstructure balanced for strength, fatigue resistance and fracture toughness. Low cycle fatigue specimens extracted from a heat-treated forging were tested at a single stress at 260 degrees C; resulting fatigue lives and variability were characterized as a function of local microstructure. A crack growth life computation was performed, assuming immediate initiation of a microstructure-scale crack. The result corresponded reasonably with an estimated minimum fatigue life.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2010
Accession Number
ADA520554

Entities

People

  • Alisha L. Hutson
  • James M. Larsen
  • William J. Porter

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Alloys
  • Computations
  • Electron Microscopes
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Manufacturing
  • Materials
  • Metals
  • Microstructure
  • Military Research
  • Regression Analysis
  • Statistical Analysis
  • Titanium
  • Titanium Alloys

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).