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US 10,293,434 B2Granted
Method to form dispersion strengthened alloys
AssigneeSiemens Energy, Inc.
InventorsGerald J. Bruck, Ahmed Kamel
Life of this patent
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Abstract
A method for forming a dispersion strengthened alloy. An alloy material (8) is melted with a heat source (28) to form a melt pool (30) in the presence of a flux material (26), and strengthening particles (36) are directed into the melt pool such that the particles are dispersed within the melt pool. Upon solidification, a dispersion strengthened alloy (44) is formed as a layer or weld joint bonded to an underlying substrate or as an object contained in a removal support.
Claims20
A method comprising:
- melting an alloy material with a heat source to form a melt pool in the presence of a flux material;
- directing strengthening particles into the melt pool, such that the strengthening particles are dispersed within the melt pool;
- and
- allowing the melt pool to cool and solidify to form a dispersion strengthened alloy at least partially covered by a slag layer,
- wherein the heat source is an energy beam, and
- the strengthening particles are directed into a non-heating portion of melt pool such that the strengthening particles are not contacted by the energy beam.
3 more elements
A method comprising:
- depositing a powdered filler material comprising an alloy material onto adjacent surfaces of at least two juxtaposed dispersion strengthened alloy substrates;
- laser melting the powdered filler material in the presence of a flux material to form a melt pool covered by a slag layer;
- injecting particles comprising a metal nitride, a metal carbide, or both, into the melt pool, such that the particles are dispersed within the melt pool;
- and
- allowing the melt pool to cool and solidify to form a dispersion strengthened weld joint fusing the at least two dispersion strengthened alloy substrates.
2 more elements
A method comprising:
- melting an alloy material with a heat source to form a melt pool in the presence of a flux material;
- directing strengthening particles into the melt pool, such that the strengthening particles are dispersed within the melt pool;
- and
- allowing the melt pool to cool and solidify to form a dispersion strengthened alloy at least partially covered by a slag layer,
- depositing a powdered filler material comprising the alloy material onto a fugitive support material, such that upon cooling of the melt pool the dispersion strengthened alloy solidifies upon the fugitive support material;
- and
- removing the fugitive support material to obtain an object comprising the dispersion strengthened alloy.
4 more elements
Dependencies are inferred from the claim text.