Grain boundary deformation in neutron irradiated nickel

Journal Article · Wed Apr 01 04:00:00 EST 1987 · Sov. At. Energy (Engl. Transl.); (United States)

OSTI ID:5288906

Ibragimov, S S; Maksimkin, O P; Shiganakov, S B

The authors studied grain boundary deformation in nickel irradiated with neutrons in a VVR-K reactor and mechanically tested at different temperatures and various neutron fluences. The degree of radiation embrittlement was found to be significant. Results show that the general nature of intergranular displacement occurred in the form of relative sliding and mutual rotation of grains. Neutron irradiation was also found to suppress grain boundary migration. These conditions are assumed to cause the formation of grain boundary microcracks during high temperature tensile deformation. The microcracks increase with increasing deformation and merge together to form a potential main crack leading to ductility loss and intergranular fracture.

• OSTI ID: 5288906
• Journal Information: Sov. At. Energy (Engl. Transl.); (United States), Journal Name: Sov. At. Energy (Engl. Transl.); (United States) Vol. 61:4; ISSN SATEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
360106* -- Metals & Alloys-- Radiation Effects
BARYONS
CRACK PROPAGATION
CRYSTAL STRUCTURE
DAMAGING NEUTRON FLUENCE
DEFORMATION
DUCTILE-BRITTLE TRANSITIONS
ELEMENTARY PARTICLES
ELEMENTS
EMBRITTLEMENT
FERMIONS
FRACTURE PROPERTIES
GRAIN BOUNDARIES
GRAIN SIZE
HADRONS
IRRADIATION
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
METALS
MICROSTRUCTURE
NEUTRON FLUENCE
NEUTRONS
NICKEL
NUCLEONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REACTOR MATERIALS
SIZE
SLIP
TEMPERATURE EFFECTS
TENSILE PROPERTIES
TESTING
TRANSITION ELEMENTS