Irradiation experiments were performed on 20% cold-worked P,Ti-modified AISI316 stainless steel, using step-wise changes in temperature. The results were analyzed with regard to the effect of temperature changes on microstructural changes. The void formation accelerated with decreasing temperature, as compared with that under constant-temperature irradiation, and void formation was suppressed as the temperature increased. On the basis of the results, it was suggested that the change in void-formation behavior was caused by step-wise changes in vacancy supersaturation that were associated with a change in irradiation temperature.

Effect of Temperature Change on Void Swelling in P,Ti-Modified 316 Stainless Steel. N.Akasaka, K.Hattori, S.Onose, S.Ukai: Journal of Nuclear Materials, 1999, 271-272, 370-5