Sulfur induced fracture mode transition of nickel at cathodic potentials

Journal Article · Tue Jan 01 04:00:00 EST 1980 · Scr. Metall.; (United States)

DOI:https://doi.org/10.1016/0036-9748(80)90263-X· OSTI ID:5692222

Bruemmer, S M; Jones, R H; Thomas, M T; Baer, D R

The effect of grain boundary chemistry on the tensile ductility and fracture mode of nickel at cathodic potentials was investigated in the present study. Recent work has shown that the fracture behavior and ductility of iron at cathodic potentials is dependent on the concentration of sulfur at grain interfaces. A threshold sulfur content was identified above which the fracture mode changed from transgranular ductile rupture to intergranular fracture. The existence of this transition in iron supplements the growing amount of evidence linking grain boundary chemistry and intergranular hydrogen embrittlement. Indications that a similar relationship might exist for nickel prompted the present research.

• Research Organization: Pacific Northwest Lab., Richland, WA
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5692222
• Journal Information: Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Vol. 14; ISSN SCRMB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CATHODES
CHEMISTRY
CRYSTAL STRUCTURE
DUCTILITY
ELECTRIC POTENTIAL
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
FRACTURE PROPERTIES
GRAIN BOUNDARIES
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
NONMETALS
SULFUR
TENSILE PROPERTIES