MARTENSITIC CREEP RESISTANT STEEL STRENGTHENED BY Z-PHASE

John Hald; Hilmar Kjartansson Danielsen

MARTENSITIC CREEP RESISTANT STEEL STRENGTHENED BY Z-PHASE

John Hald (Inventor)
, Hilmar Kjartansson Danielsen (Inventor)

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 language	English
Patent number	WO2008106978
Filing date	12/09/2008
Country/Territory	International Bureau of the World Intellectual Property Organization (WIPO)
Publication status	Published - 2008

Bibliographical note

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

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title = "MARTENSITIC CREEP RESISTANT STEEL STRENGTHENED BY Z-PHASE",

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.",

author = "John Hald and Danielsen, \{Hilmar Kjartansson\}",

note = "International application published under the World Intellectual Property Organization (WIPO); WO2008106978",

year = "2008",

language = "English",

type = "Patent",

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TY - PAT

T1 - MARTENSITIC CREEP RESISTANT STEEL STRENGTHENED BY Z-PHASE

AU - Hald, John

AU - Danielsen, Hilmar Kjartansson

N1 - International application published under the World Intellectual Property Organization (WIPO)

PY - 2008

Y1 - 2008

N2 - 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.

AB - 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.

M3 - Patent

M1 - WO2008106978

Y2 - 2008/09/12

ER -

MARTENSITIC CREEP RESISTANT STEEL STRENGTHENED BY Z-PHASE

Abstract

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