1968 · 38 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationMetallic MaterialsMetallurgyAlloy IdentificationAlloysMetalsNickel-based SuperalloysPhase AnalysisPhase StabilityCast AlloysCast SuperalloysIntermetallic FormationMicroscopic Residue AnalysisMicroscopySuperalloysWrought AlloysWrought Superalloys
Twelve nickel-base superalloys were examined utilizing microscopy and residue analysis techniques to identify and to determine the relative stability for long times (up to 5000 hours) of gamma-prime and the minor phases in the 1400-2100F temperature range. The materials studied included seven cast alloys, IN 100, B-1900, lnco 713C, MAR-M200, MAR-M246, TRW-NASA'IVY and TRW-NASA VIA,and five wrought alloys, U-700, Rene' 41, lnconel 718, Waspaloy and Unitemp AF2-ID. Seven minor phases were identified: MC, sigma, mu and Ni Cb. M2 MC was found in all i! C6, M6C, M B2, ?