Hydrogen embrittlement due to hydrogen-inclusion interactions

Conference · Thu Jan 01 04:00:00 EST 1976 · Nucl. Metall.; (United States)

OSTI ID:7246424

Yu, H Y; Li, J C.M.

Plastic flow around inclusions creates elastic misfit which attracts hydrogen towards the regions of positive dilatation. Upon decohesion of the inclusion-matrix interface, the excess hydrogen escapes into the void and can produce sufficient pressure to cause void growth by plastic deformation. This mechanism of hydrogen embrittlement can be used to understand the increase of ductility with temperature, the decrease of ductility with hydrogen content, and the increase of ductility with the ultimate strength of the matrix. An examination of the effect of the shape of spheroid inclusion reveals that rods are more susceptible to hydrogen embrittlement than disks. The size of the inclusion is unimportant while the volume fraction of inclusions plays the usual role.

• Research Organization: Univ. of Rochester, New York
• OSTI ID: 7246424
• Conference Information: Journal Name: Nucl. Metall.; (United States) Journal Volume: 20
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYOGENIC FLUIDS
DEFORMATION
DUCTILITY
ELEMENTS
EMBRITTLEMENT
FLUIDS
HEAT RESISTING ALLOYS
HYDRIDATION
HYDROGEN
INCLUSIONS
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
NICKEL ALLOYS
NONMETALS
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
STRESSES
TENSILE PROPERTIES
VOIDS
YIELD STRENGTH