DISSIMILAR METAL WELDS OF CERTAIN SUPERALLOYS AND STAINLESS STEELS

摘要

A welding program was conducted in support of the design and construction of the model ATR high temperature gas loop. Sections of 1-1/2-inch schedule 40 pipe of superalloy and stainless steel loop metal candidates were welded by the tungsten-electrode inert-gas process. All possible metal combinations of Hastelloy X, Hastelloy C, Haynes alloy 25, and AISI 316 and 347 stainless steel were made except for Hastelloy X to Hastelloy C and AISI 316 and 347 welded to themselves.