In-pile parts for nuclear reactor and method of heat treatment therefor

摘要

In-pile parts for a nuclear reactor made of alloy consisting essentially of by weight 0.01-0.2% C, 10-21% Cr, 1-4% Ti, 0.3-2% Nb, 0.1-2% Al and the balance Ni wherein Ti content being higher than Nb content, said alloy having the microstructure of chromium carbides precipitated in the grain boundaries and a gamma ' phase precipitated in the grains with the matrix thereof being austenite in microstructure.