MARTENSITIC CREEP RESISTANT STEEL STRENGTHENED BY Z-PHASE

Research output: Patent

Abstract

The present invention relates to steel alloys having a martensitic or martensitic- ferritic structure and comprising Z-phase (CrXN) particles, where X is one or more of the elements V, Nb, Ta, and where the Z-phase particles have an average size of less than 400 nm. The alloy comprises by wt % the following components: 9 to 15% Cr, 0.01-0.20% N, C in an amount less than 0.1%, one or more of: 0.01- 0.5%V,0.01-1%Nb, 0.01-2%Ta, and a balance being substantially iron and inevitable impurities. The invention further relates to a method of manufacturing such a steel alloy, a component comprising such a steel alloy, and to the use of such a steel alloy for high temperature components.
Original languageEnglish
Patent numberWO2008106978
Filing date12/09/2008
CountryInternational Bureau of the World Intellectual Property Organization (WIPO)
Publication statusPublished - 2008

Bibliographical note

International application published under the World Intellectual Property Organization (WIPO)

Cite this