[2C01-07] Irradiation Effect 1

[2C06] Effect of solute atoms on dislocation loop formation in Fe-Cr-Al alloys

*Naoyuki Hashimoto¹, Yixian Tang², Kodai Toyota³ (1. Faculty of Engineering, Hokkaido University, 2. Graduate School of Engineering, Hokkaido University, 3. Japan Atomic Energy Agency)

Keywords:FeCrAl alloys, Irradiation damage, Density Function Theory, Dislocation loop

The mechanism of dislocation loop formation in FeCrAl alloys, which have been developed as an accident tolerant fuel cladding material, was investigated on the basis of irradiation experiment and theoretical calculation. The effect of Cr and Al on the loop formation are different. It seemed that Cr suppressed the formation of <100> type loop as interstitials, while Al did as substitutions.