Intergranular fracture of nickel: The effect of hydrogen-sulfur co-segregation

Journal Article · Wed Jul 01 00:00:00 EDT 1987 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(87)90127-1· OSTI ID:5524725

Lassila, D H; Birnbaum, H K

The effect of grain boundary sulfur segregation on the embrittlement of hydrogen charged nickel has been studied using tensile tests at 77K. Segregated sulfur decreased the amount of solute hydrogen required to cause 100% intergranular fracture. The amount of local deformation which accompanied the intergranular fracture also depended on the extent of sulfur and hydrogen segregation and was examined using SEM techniques. These results are discussed based on the effects of sulfur on hydrogen segregation and the synergistic effects of sulfur and hydrogen on fracture at the grain boundary.

• Research Organization: Dept. of Metallurgy and Mining Engineering, Univ. of Illinois at Urbana-Champaign, Urbana, IL 61801
• OSTI ID: 5524725
• Journal Information: Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 35:7; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ELECTRON MICROSCOPY
ELEMENTS
EMBRITTLEMENT
FAILURES
FRACTURES
HYDROGEN
HYDROGEN EMBRITTLEMENT
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
METALS
MICROSCOPY
NICKEL
NONMETALS
SCANNING ELECTRON MICROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
SULFUR
SULFUR CONTENT
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS