| 摘要 |
PROBLEM TO BE SOLVED: To obtain the austenitic deposited metal having excellent stress corrosion crack resistance under high temperature and high pressure water by composing of the Ni base alloy containing the specified composition of C, Si, Mn, Cr, Fe, moreover containing one kind or more of five kinds of elements of Al or the like and specifying that the solidified cell size is <= the specified value. SOLUTION: This deposited metal is composed of the Ni base alloy containing, by wt., <=0.06% C, <=0.35%, Si, <=3.5% Mn, 18-30% Cr, <=40%, Fe, or the Ni base alloy wherein the balance is composed of Ni with inevitable impurities and moreover 2-16%, of one kind or more selected from 0.1-3% Al, 0.2-4.5% Ti, 2-9% Nb, 2-9%, Ta, 1.5-10% Mo is contained. This deposited metal is welded or deposited to the structure member within a light water reactor or the like using a high density energy heat source. In this case, the fineness of the solidified cell size in the obtained deposited metal is required. The cell size in cross section orthogonal to the longitudinal direction of the solidified cell formed into a bar shape is preferably specified to be <=15μm.
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