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Author Kargol, J. A.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ HASTELLOYS ♦ HYDROGEN EMBRITTLEMENT ♦ PHYSICAL PROPERTIES ♦ AGING ♦ ANNEALING ♦ CARBIDES ♦ COLD WORKING ♦ DIFFUSION ♦ HIGH TEMPERATURE ♦ MEDIUM TEMPERATURE ♦ NICKEL BASE ALLOYS ♦ NIOBIUM ♦ PERMEABILITY ♦ TRAPPING ♦ ALLOYS ♦ CARBON COMPOUNDS ♦ ELEMENTS ♦ EMBRITTLEMENT ♦ FABRICATION ♦ HEAT RESISTANT MATERIALS ♦ HEAT RESISTING ALLOYS ♦ HEAT TREATMENTS ♦ IRON ALLOYS ♦ MATERIALS ♦ MATERIALS WORKING ♦ METALS ♦ MOLYBDENUM ALLOYS ♦ NICKEL ALLOYS ♦ TRANSITION ELEMENTS 360104* -- Metals & Alloys-- Physical Properties ♦ Metals & AlloysPreparation & Fabrication ♦ Metals & AlloysCorrosion & Erosion
Abstract Hydrogen transport parameters have been measured in HASTELLOY Alloys C-276 and over the temperature range of 17 to 90/degree/C. The two alloys exhibited dramatically different hydrogen behavior. For Alloy C-276, diffusivity in both the cold worked and annealed conditions decreased by a factor of two following low temperature (500/degree/C) aging. Hydrogen trapping was not observed. An analysis of hydrogen transport in Alloy G indicated reversible and irreversible trapping by niobium substitutional atoms and second phase carbides, respectively. The results are related to hydrogen embrittlement tendencies. 37 refs.
Educational Use Research
Learning Resource Type Article
Publisher Date 1982-07-01
Publisher Place United States
Journal Metall. Trans., A
Volume Number 13A
Issue Number 7
Organization Univ of Notre Dame, Indiana, USA


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