Hydrogen Embrittlement of Iron-Nickel Alloys.

Abstract

In many alloy systems, hydrogen embrittlement under relatively high fugacity conditions occurs by intergranular fracture. One of these is the iron nickel alloy system which exhibits intergranular hydrogen related fracture when tested with a high supersaturation of solute hydrogen or while being cathodically charged with hydrogen. The results obtained on this alloy system indicate that the hydrogen embrittlement susceptibility decreases as the iron concentration of the alloy increased. These early measurements contained no information about the grain boundary chemistry and it is known that the effects of hydrogen are generally sensitive to the concentrations of other elements at grain boundaries. One particular element, sulphur, is known to increase the susceptibility of nickel alloys and fe alloys to hydrogen embrittlement although the mechanism of this increased susceptibility is not known. (JES)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1988
Accession Number
ADA195909

Entities

People

  • Howard K. Birnbaum
  • W. Y. Chu

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Crystal Structure
  • Current Density
  • Ductile Brittle Transition
  • Elements
  • Engineering
  • Hydrogen Embrittlement
  • Mass Spectrometry
  • Materials
  • Materials Science
  • Measurement
  • Solid Solutions
  • Spectrometry
  • Tensile Properties
  • Tensile Strength
  • Tensile Testing

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Materials Science (Mechanical Engineering).
  • Powder metallurgy of Titanium alloys.