Hot working high-chromium alloy

Details Hot working high-chromium alloy Hot working high-chromium alloy

C - Chemistry, Metallurgy

22

C

C22C 19/05 (2006.01) B23K 35/30 (2006.01) C22C 19/03 (2006.01) C22C 27/06 (2006.01) C22F 1/10 (2006.01) C22F 1/11 (2006.01)

Patent

CA 2249835

Hot working a nickel-chromium alloy that contains by weight percent, 42 to 65 chromium, 0.002 to 0.1 calcium, 0.002 to 0.1 magnesium, 0 to 2 aluminum, about 0 to 5 cobalt, 0 to 3 copper, 0 to 5 iron, 0 to 5 manganese, 0 to 3 molybdenum, 0 to 3 niobium, 0 to 2 silicon, 0 to 3 tantalum, 0 to 5 titanium, 0 to 5 tungsten, 0 to 5 vanadium, 0 to 1 zinc, 0 to 0.2 carbon 0 to 0.1 silver, 0 to 0.1 cerium, 0 to 0.1 phosphorus, 0 to 0.1 sulfur, less than 0.005 total boron, rare earths and zirconium and balance nickel and incidental impurities, at a temperature of at least 800°C improves formability for .alpha.-phase chromium alloys.

Le travail à chaud d'un alliage de nickel-chrome renfermant en % en poids, 42 à 65 de chrome, 0,002 à 0,1 de calcium, 0,002 à 0,1 de magnésium, 0 à 2 d'aluminium, environ 0 à 5 de cobalt, 0 à 3 de cuivre, 0 à 5 de fer, 0 à 5 de manganèse, 0 à 3 de molybdène, 0 à 3 de niobium, 0 à 2 de silicium, 0 à 3 de tantale, 0 à 5 de titane, 0 à 5 de tungstène, 0 à 5 de vanadium, 0 à 1 de zinc, 0 à 0,2 de carbone, 0 à 0,1 d'argent, 0 à 0,1 de cérium, 0 à 0,1 de phosphore, 0 à 0,1 de soufre, moins de 0,005 en tout de bore, de terres rares et de zirconium, le reste étant constitué de nickel et d'impuretés accidentelles, à une température d'au moins 800 degrés C, améliore la formabilité d'alliages de chrome alpha.

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