Back to results
US 8,616,851 B2Granted
Multi-alloy article, and method of manufacturing thereof
AssigneeGeneral Electric Company
InventorsRichard DiDomizio, Matthew Joseph Alinger, Samuel Vinod Thamboo, Raymond Joseph Stonitsch
Life of this patent
Estimating the term…
Abstract
An article includes a first section extending from an outer periphery to a predetermined surface located inward from the outer periphery. The first section comprises a nanostructured ferritic alloy. The article includes a second section extending from an inner periphery to the predetermined surface located outward from the inner periphery. The second section comprises at least one other alloy different from the nanostructured ferritic alloy.
Claims24
An article, comprising:
- a first section extending from an outer periphery to a predetermined surface located inward from the outer periphery, wherein the first section comprises a nanostructured ferritic alloy;
- wherein the nanostructured ferritic alloy comprises from about 5 weight percentage to about 30 weight percentage chromium, from about 0.1 weight percentage to about 2 weight percentage titanium, from about 0 weight percentage to about 5 weight percentage molybdenum, from about 0 weight percentage to about 5 weight percentage tungsten, from about 0 weight percentage to about 5 weight percentage manganese, from about 0 weight percentage to about 5 weight percentage silicon, from about 0 weight percentage to about 2 weight percentage niobium, from about 0 weight percentage to about 2 weight percentage aluminum, from about 0 weight percentage to about 8 weight percentage nickel, from about 0 weight percentage to about 2 weight percentage tantalum, from about 0 weight percentage to about 0.5 weight percentage carbon, and from about 0 weight percentage to about 0.5 weight percentage nitrogen, with the balance weight percentage being iron and incidental impurities;
- and a number density of at least about 1018 m−3 nanofeatures comprising titanium oxide and at least one element from an oxide added during formation of the nanostructured ferritic alloy, or from the alloy matrix;
- and
- a second section extending from an inner periphery to the predetermined surface located outward from the inner periphery, wherein the second section comprises at least one other alloy different from the nanostructured ferritic alloy.
2 more elements
A turbomachinery component, comprising:
- a first section extending from a rim to a predetermined surface located inward from the rim, wherein the first section comprises a nanostructured ferritic alloy, wherein the nanostructured ferritic alloy comprises from about 5 weight percentage to about 30 weight percentage chromium, from about 0.1 weight percentage to about 2 weight percentage titanium, from about 0 weight percentage to about 5 weight percentage molybdenum, from about 0 weight percentage to about 5 weight percentage tungsten, from about 0 weight percentage to about 5 weight percentage manganese, from about 0 weight percentage to about 5 weight percentage silicon, from about 0 weight percentage to about 2 weight percentage niobium, from about 0 weight percentage to about 2 weight percentage aluminum, from about 0 weight percentage to about 8 weight percentage nickel, from about 0 weight percentage to about 2 weight percentage tantalum, from about 0 weight percentage to about 0.5 weight percentage carbon, and from about 0 weight percentage to about 0.5 weight percentage nitrogen, with the balance weight percentage being iron and incidental impurities;
- and a number density of at least about 1018 m−3 nanofeatures comprising titanium oxide and at least one element from an oxide added during formation of the nanostructured ferritic alloy, or from the alloy matrix;
- and
- a second section extending from a bore to the predetermined surface located outward from the bore, wherein the second section comprises at least one other alloy different from the nanostructured ferritic alloy.
1 more element
A method for manufacturing an article, comprising:
- forming a first section comprising a nanostructured ferritic alloy, wherein the nanostructured ferritic alloy comprises from about 5 weight percentage to about 30 weight percentage chromium, from about 0.1 weight percentage to about 2 weight percentage titanium, from about 0 weight percentage to about 5 weight percentage molybdenum, from about 0 weight percentage to about 5 weight percentage tungsten, from about 0 weight percentage to about 5 weight percentage manganese, from about 0 weight percentage to about 5 weight percentage silicon, from about 0 weight percentage to about 2 weight percentage niobium, from about 0 weight percentage to about 2 weight percentage aluminum, from about 0 weight percentage to about 8 weight percentage nickel, from about 0 weight percentage to about 2 weight percentage tantalum, from about 0 weight percentage to about 0.5 weight percentage carbon, and from about 0 weight percentage to about 0.5 weight percentage nitrogen, with the balance weight percentage being iron and incidental impurities;
- and a number density of at least about 1018 m−3 nanofeatures comprising titanium oxide and at least one element from an oxide added during formation of the nanostructured ferritic alloy, or from the alloy matrix;
- forming a second section comprising at least one other alloy different from the nanostructured ferritic alloy;
- and
- joining the first section to the second section;
- wherein the first section extends from an outer periphery to a predetermined surface located inward from the outer periphery, and the second section extends from an inner periphery to the predetermined surface located outward from the inner periphery.
3 more elements
A method for manufacturing an article, comprising:
- simultaneously forming a first section comprising a nanostructured ferritic alloy, and a second section comprising at least one other alloy different from the nanostructured ferritic alloy joined to the first section;
- wherein the first section extends from an outer periphery to a predetermined surface located inward from the outer periphery, and the second section extends from an inner periphery to the predetermined surface located outward from the inner periphery, wherein the nanostructured ferritic alloy comprises from about 5 weight percentage to about 30 weight percentage chromium, from about 0.1 weight percentage to about 2 weight percentage titanium, from about 0 weight percentage to about 5 weight percentage molybdenum, from about 0 weight percentage to about 5 weight percentage tungsten, from about 0 weight percentage to about 5 weight percentage manganese, from about 0 weight percentage to about 5 weight percentage silicon, from about 0 weight percentage to about 2 weight percentage niobium, from about 0 weight percentage to about 2 weight percentage aluminum, from about 0 weight percentage to about 8 weight percentage nickel, from about 0 weight percentage to about 2 weight percentage tantalum, from about 0 weight percentage to about 0.5 weight percentage carbon, and from about 0 weight percentage to about 0.5 weight percentage nitrogen, with the balance weight percentage being iron and incidental impurities;
- and a number density of at least about 1018 m−3 nanofeatures comprising titanium oxide and at least one element from an oxide added during formation of the nanostructured ferritic alloy, or from the alloy matrix.
Dependencies are inferred from the claim text.