Metallurgical Changes in the High Temperature Fretting of Ni and Ti Alloys.

Abstract

Ti-6Al-4V specimens subjected to fretting fatigue at 400 C have been examined in SEM. Layer formation similar to that obtained on specimens tested at 200 and 600 C was observed. Fatigue and fretting fatigue curves have been determined on Inconel 718 at 20, 280, and 540 C, together with isolated observations at 700 C where creep becomes excessive. Raising the temperature has little effect on fatigue strength but improves the fretting fatigue strength. The improvement is thought to be due to glaze formation. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1977
Accession Number
ADA046002

Entities

People

  • R. B. Waterhouse

Organizations

  • University of Nottingham

Tags

DTIC Thesaurus Topics

  • Advanced Materials
  • Alloys
  • Classification
  • Creep
  • Delamination
  • Electron Microscopes
  • Engineered Materials
  • Failure Mode And Effect Analysis
  • Fatigue Life
  • Fretting
  • High Temperature
  • Materials
  • Mechanical Properties
  • Observation
  • Plastic Deformation
  • Scanning Electron Microscopes
  • Security

Fields of Study

  • Materials science

Readers

  • Mathematics or Statistics
  • Powder metallurgy of Titanium alloys.
  • Structural Health Monitoring of Composite Structures.