Effects of the additions of B, P, Sn, and Sb on oxygen assisted hydrogen embrittlement of nickel

Journal Article · Wed Feb 29 23:00:00 EST 1984 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02644976· OSTI ID:6409005

Ogino, Y; Yamasaki, T

Effects of additions of B, P, Sn, and Sb on hydrogen embrittlement of nickel were examined on specimens cathodically charged with hydrogen. Tensile specimens were annealed either in vacuum or in a dry hydrogen gas. Undoped, Sn-doped, and Sb-doped materials annealed in vacuum revealed high susceptibility to intergranular hydrogen embrittlement, while the susceptibility was greatly reduced when the materials were annealed in hydrogen. The deleterious effect of vacuum annealing was proposed to result from grain boundary penetration of oxygen from the annealing environment. Additions of a small amount of B and P almost completely suppressed the IGHE of specimens annealed in vacuum. It is suggested that the effect of these elements on grain boundary penetration of oxygen is an important factor for their beneficial effects on IGHE. Addition of Sn somewhat increased the ductility of hydrogen charged specimens annealed both in vacuum and in hydrogen, indicating that this element is not deleterious. Addition of Sb increased the embrittlement susceptibility of specimens annealed in hydrogen. However, the deleterious effect of Sb was not serious in spite of the high concentration of Sb that was examined.

• Research Organization: Department of Material Science, Himeji Institute of Technology, Himeji
• OSTI ID: 6409005
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 15A:3; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ANNEALING
ANTIMONY
BORON
CHEMICAL REACTION KINETICS
CRYSTAL STRUCTURE
DOPED MATERIALS
ELEMENTS
EMBRITTLEMENT
GRAIN BOUNDARIES
HEAT TREATMENTS
HYDROGEN EMBRITTLEMENT
KINETICS
MATERIALS
METALLURGICAL EFFECTS
METALS
MICROSTRUCTURE
NICKEL
NONMETALS
OXYGEN
PHOSPHORUS
REACTION KINETICS
SEMIMETALS
TIN
TRANSITION ELEMENTS
VACUUM STATES