Print Email Facebook Twitter Engineering property comparisons of PM alloy X7091-T7E69 and IM alloy forgings Title Engineering property comparisons of PM alloy X7091-T7E69 and IM alloy forgings Author 't Hart, W.G.J. Schra, L. Institution National Aerospace Laboratory NLR Date 1982-06-30 Abstract The engineering properties of PM alloy X7091-T7E69 forgings were compared with those of forgings of the IM alloys 7075-T73, 7175-T736, 7050-T736 and 7010-T736. The properties considered were: strength, fracture toughness, fatigue crack propagation under constant amplitude and flight simulation loading, stress corrosion crack initiation and propagation resistance, and exfoliation corrosion. The most important findings were: - A substantially better combination of strength and resistance to stress corrosion and exfoliation corrosion for the PM alloy as compared to the IM alloys. - A fracture toughness of the PM alloy lower than (LT orientation) or similar to (TL orientation) that of the IM alloys. - A dramatically low spectrum fatigue crack propagation life for the PM alloy. - Only minor differences between the IM alloys. Subject High strength alloysAluminium alloysMechanical propertiesFracture strengthStress corrosion crackingForgingsPowder metallurgyExfoliation corrosionFlight simulationCorrosion testsFatigue tests To reference this document use: http://resolver.tudelft.nl/uuid:068a8347-f90c-43bc-a375-9ac078c87f28 Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR-TR 82054 U Part of collection Aerospace Engineering Reports Document type report Rights (c)1982 National Aerospace Laboratory NLR Files campus only