[3J10-15] ジルコニウム合金

[3J12] Effects of 140 MeV C⁴⁺ irradiation on microstructure and mechanical properties in Zr-1.8Nb alloys

*Huilong Yang¹, Sho Kano¹, Zhengang Duan³, Yoshitaka Matsukawa², Kenta Murakami¹, Hiroaki Abe¹ (1. Graduate School of Engineering, The University of Tokyo, 2. Institute for Materials Research, Tohoku University, 3. Graduate School of Engineering, Tohoku University)

キーワード：Nuclear fuel cladding saterials, Zr-based alloy, Irradiation strengthening, Microstructure, Mechanical property

It is well known that irradiation hardening and resultant embrittlement is considered as one of the main performance degradation in Zr-based fuel cladding tubes. Therefore, the tensile specimens (Zr-1.8Nb, wt.%) with spatially-uniform irradiation damage were prepared by the irradiation of 140 MeV C⁴⁺ in the present study, and the irradiation effects on the microstructural and mechanical changes in Zr-Nb alloys were investigated.