Hydrogen Embrittlement of Nickel: Modeling of the Effect of Diffusive Segregation of Hydrogen on Intergranular Fracture.

Abstract

Grain boundary fracture of hydrogen-charged nickel was studied under test conditions where hydrogen is essentially immobile. Prior to testing, hydrogen was allowed to diffuse during aging treatments. Experimental results show that the transition in the fracture mode from ductile rupture to intergranular is strongly dependent on aging temperature an time as well as initial bulk hydrogen concentration. Analytical modeling of these dependencies using established thermodynamic and kinetic relationships, indicates that grain boundary hydrogen concentration controls the fracture mode of hydrogen-charged nickel at low temperatures.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1986
Accession Number
ADA163415

Entities

People

  • D. H. Lassila
  • Howard K. Birnbaum

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Auger Electron Spectroscopy
  • Auger Electrons
  • Boundaries
  • Diffusion
  • Diffusion Theory
  • Electron Microscopy
  • Electron Spectroscopy
  • Embrittlement
  • Grain Boundaries
  • Hydrogen Embrittlement
  • Materials
  • Statistical Mechanics
  • Tensile Testing
  • Test Methods
  • Thermodynamics
  • Transitions
  • Transmission Electron Microscopy

Readers

  • Materials Science (Mechanical Engineering).
  • Powder metallurgy of Titanium alloys.