Je. Pawel et al., EFFECTS OF LOW-TEMPERATURE NEUTRON-IRRADIATION ON DEFORMATION-BEHAVIOR OF AUSTENITIC STAINLESS-STEELS, Journal of nuclear materials, 237, 1996, pp. 202-206
Citations number
35
Categorie Soggetti
Nuclear Sciences & Tecnology","Mining & Mineral Processing","Material Science
Two experiments have been conducted to quantify the effects of neutron
irradiation on the deformation and fracture behavior of solution anne
aled austenitic stainless steels irradiated to doses ranging from 3 to
19 dpa at temperatures from 60 to 400 degrees C. For all alloys, yiel
d strength increases rapidly with dose in the 60-300 degrees C regime.
Radiation hardening is accompanied by changes in the flow properties
with the appearance of an initial yield drop and a significant reducti
on in strain hardening capacity. The magnitude of the changes is depen
dent upon both neutron dose and irradiation temperature, with reductio
ns in strain hardening capacity occurring most rapidly in the range 25
0-350 degrees C. It is shown that for neutron doses up to about 3 dpa,
although the changes in deformation mode reduce the fracture toughnes
s, the toughness remains satisfactorily high.