High Temperature Alloys and Methods for Fabricating Same

High Temperature Alloys and Methods for Fabricating Same

An alloy construction for separating a low oxygen content corrosive environment from a high oxygen content oxidizing environment includes a wall having a wall thickness and a first surface segment for contacting the low oxygen content corrosive environment, and a second surface segment for contactin...

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Bibliographische Detailangaben
Hauptverfasser: PILLAI, Rishi R, NAG, Soumya, FELDHAUSEN, Thomas
Format: Patent
Sprache:eng
Schlagworte:
ADDITIVE MANUFACTURING TECHNOLOGY
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
ALLOYS
CASTING
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:An alloy construction for separating a low oxygen content corrosive environment from a high oxygen content oxidizing environment includes a wall having a wall thickness and a first surface segment for contacting the low oxygen content corrosive environment, and a second surface segment for contacting the high oxygen content oxidizing environment. The alloy comprises, in weight percent: 0 to 5 Al; 5 to 30 Cr; 0 to 20 Co; 0 to 70 Fe; 0 to 2 Nb; 0 to 2 Ta; 0 to 3 Ti; 0 to 1 Si; 0 to 1 V; 0 to 2 Mn; 0 to 5 Cu; 0 to 30 Mo; 0 to 30 W; 0 to 0.1 P; 0 to 1 Zr; 0 to 1 Hf; 0 to 0.1 Y; 0.05 to 0.5 C; 0 to 0.1 N; and balance Ni. The alloy is compositionally graded from the first surface segment to the second surface segment. The wall composition has a stable FCC austenitic matrix microstructure, with strengthening phases comprising gamma prime with a volume fraction of 0 to 30% and carbides with a volume fraction of 0 to 5%.