Effect of minor elements of hot-cracking tendencies of Inconel 600

Abstract

An investigation was undertaken to determine the effect of six minor elements, S, P, Si, Mn, Ti and Al, on the hot-cracking propensity of Inconel, a solid-solution strengthened nickel-base alloy. In order to determine the effects of these six elements, a new weldability evaluation test, the ''Tigamajig'' test, was developed. An outgrowth of the ''Varestraint'' test, the Tigamajig test combines the advantages of its predecessor with a reduced specimen size and ease of specimen preparation. A technique was used which allowed the preparation of a large number of specimens of systematically varied composition by the incorporation of compacted-and-sintered powder inserts containing the desired minor-element additions.