POWDER METALLURGY METHOD FOR PRODUCING NON-MOLYBDENUM-SEGREGATED ARTICLE
A powder metallurgy method for producing a non-molybdenum-segregated article is disclosed. The method includes use of a Ni-Mo-Cr powder that has a composition in which Ni is the base element and the Mo and Cr are alloy elements. The composition comprises, by weight, at least 20% of the Mo, and the M...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A powder metallurgy method for producing a non-molybdenum-segregated article is disclosed. The method includes use of a Ni-Mo-Cr powder that has a composition in which Ni is the base element and the Mo and Cr are alloy elements. The composition comprises, by weight, at least 20% of the Mo, and the Mo is dispersed in the Ni-Mo-Cr powder. The Ni-Mo-Cr powder is inserted into a hermetic chamber of a canister, followed by evacuating the hermetic chamber. The canister with the Ni-Mo-Cr powder in the hermetic chamber is then subjected to a hot isostatic pressing process that includes heating the canister and the Ni-Mo-Cr powder and applying isostatic pressure to the canister. The heating and the isostatic pressure causes fusion and consolidation of the Ni-Mo-Cr powder to form a solid article. The Mo remains dispersed such that the solid article is non-molybdenum-segregated. The canister is then removed from the solid article. |
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