Mechanisms for the Hydrogen Environment Embrittlement Resistance of High Strength Alloys.

Abstract

The objectives of this research are to: (1) identify conditions under which high strength beta titanium alloys and Fe-Ni-based superalloys resist environment assisted cracking (EAC) in marine environments; (2) characterize EAC initiation and propagation versus metallurgical, chemical, and mechanical variables that may destabilize the crack tip passive film to promote both dissolution and hydrogen uptake; (3) test the hydrogen embrittlement mechanism; and (4) model EAC by integrating crack chemistry, surface repassivation kinetics, hydrogen uptake to trap sites, and crack tip process zone damage. This report summarizes the results obtained for FY 96 and includes papers published or prepared during the period from September, 1995 to September 1996.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1997
Accession Number
ADA321190

Entities

People

  • John R. Scully
  • R. G. Kelly
  • R. P. Gangloff

Organizations

  • University of Virginia

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Biomedical
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Chemical Compounds
  • Chemical Engineering
  • Chemical Reactions
  • Chemical Synthesis
  • Chemistry
  • Corrosion
  • Corrosion Inhibition
  • Corrosion Resistance
  • Hydrogen Embrittlement
  • Material Degradation Processes
  • Materials
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Solid Solutions
  • Stress Corrosion Cracking

Readers

  • Materials Science and Engineering.