Mechanical Suppression of SCC and Corrosion Fatigue Failures in 300M Steel Landing Gear

Abstract

300M steel is widely used in landing gear because of its ultra high strength with high fracture toughness, but is vulnerable to both corrosion fatigue and stress corrosion cracking, with potentially catastrophic consequences. Plating and shot peening surface treatments currently used to extend life are only partly effective. A surface treatment is needed that will mitigate foreign object damage (FOD), corrosion fatigue and stress corrosion cracking. This paper describes the use of low plasticity burnishing (LPB) to improve damage tolerance and to mechanically suppress stress sensitive corrosion failure mechanisms.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2004
Accession Number
ADA452356

Entities

People

  • Jack Coate
  • Mike Shepard
  • N. Jayaraman
  • Neal Ontko
  • Paul Prevey
  • Robert Ware

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Cold Working
  • Damage Tolerance
  • Engineering
  • Failure Mode And Effect Analysis
  • Foreign Object Damage
  • Landing Gear
  • Materials
  • Materials Science
  • Mechanical Working
  • Residual Stress
  • Shot Peening
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Surface Finishing
  • Tensile Properties
  • Tensile Stress

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Structural Health Monitoring of Composite Structures.