Corrosion Fatigue of AerMet 100 Steel.

Abstract

This study was undertaken to characterize and understand the fatigue behavior of AerMet 100 steel under loading with stress ratio 0.1 and load frequencies of 0.1, 1, and 10 Hz in gaseous dry nitrogen, distilled water, and aqueous 3.5% NaCI solution at ambient temperature. The influence of environmental factor on near-threshold crack growth was also investigated. The environment assisted fatigue crack growth was faster for a more aggressive environment and a lower load frequency in high AK region. The environment induced crack closure was greater and the fatigue crack growth was slower for a more aggressive environment in low AK or near-threshold crack growth region. The corrosion fatigue crack path was partly intergranular and partly transgranular.

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Document Details

Document Type
Technical Report
Publication Date
Jul 09, 1996
Accession Number
ADA321866

Entities

People

  • Eun U. Lee

Organizations

  • Naval Air Warfare Center

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aerial Warfare
  • Aircraft Equipment
  • Aircrafts
  • Carrier Based Aircraft
  • Chemical Composition
  • Corrosion
  • Cracks
  • Digital Computers
  • Displacement
  • Engineering
  • Environment
  • Fatigue Tests (Mechanics)
  • Frequency
  • Heat Treatment
  • Materials
  • Tensile Strength
  • Water Vapor

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.