High yield strength ni-cr-mo alloys and methods of producing...

Details High yield strength ni-cr-mo alloys and methods of producing... High yield strength ni-cr-mo alloys and methods of producing...

C - Chemistry, Metallurgy

22

C

75/112, 148/55.2

C22C 19/05 (2006.01) C21D 1/00 (2006.01) C22F 1/10 (2006.01)

Patent

CA 1103064

ABSTRACT OF THE DISCLOSURE A process and an alloy are proved for producing high strength material having good ductility to provide a high strength, corrosion resistant alloy including the steps of (1) preparing a body of material having a composition consisting essentially of by weight, about 13% to 18% chromium, about 13% to 18% molybdenum, less than 0.01% carbon, less than about 6% iron, less than about 1.25% cobalt, less than about 4% tungsten, less than 0.5% aluminum, less than 1% manganese, less than 0.5% silicon, and the balance nickel with usual transient metals and impurities in ordinary amounts, and (2) thereafter aging said body at a temperature in the range about 900° and 1100°F to effect an A2B ordering reaction in the composition, the engineering properties of these alloys are parti- cularly useful where a combination of high strength, ductility and corrosion resistance is essential, such as shafts in centrifuges, marine shafts, propulsion components and the like.

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