| 摘要 |
PCT No. PCT/JP83/00206 Sec. 371 Date Feb. 24, 1984 Sec. 102(e) Date Feb. 24, 1984 PCT Filed Jun. 29, 1983 PCT Pub. No. WO84/00122 PCT Pub. Date Jan. 19, 1984.An austenitic stainless steel welded metal layer having the given composition containing delta-ferrite phase is previously overlay welded as an intermediate layer prior to overlay welding of a surface layer of stainless steel, nickel alloy or the like on a base metal of carbon steel or low alloy steel. In the said composition, by making the ratio of Creq/Nieq to be more than 1.85, the disbonding is prevented and by making Creq to be less than 26% and the content of delta-ferrite phase to be less than 20%, the deterioration of flexural elongation is prevented. The present invention is applicable to the lining on an inner surface of a chemical reactor vessel, such as a desulfurizing reactor for petroleum-refining to be used under a high-temperature, high-pressure hydrogen environment.
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