Patent ID: 9051631
Filing Date: 2015-06-09
Classification: C22C

Abstract:
1. A wear-and corrosion-resistant alloy for forming a weld overlay over a metallic component, the alloy consisting of, by approximate weight %: wherein the alloy further contains Nb as a carbide-former in a concentration to provide a weight ratio of Nb to C between 2.3:1 and 7:1 to stoichiometrically offset between about 30% and about 90% of the C in the alloy, such that Nb is consumed in the formation of carbides and is not available for formation of brittle intermetallic phases and such that carbon is thereby consumed by Nb in the formation of Nb carbides, which carbon is therefore unavailable to consume Mo and Cr by formation of Mo and Cr carbides; and wherein the alloy has an electron vacancy number between 2.3 and 2.80 as calculated using SAE specification AS5491 (Revision B), with no contribution from the carbide-former element.