HEAT RESISTANT NI ALLOY

PURPOSE:To obtain a solubilization hardening type heat resistant Ni alloy with superior cold workability, high tensile strength at high timp., high fatigue strength and superior oxidation resistance by specifying the percentages of C, Ca, Cr, Co, Mo and W in Ni. CONSTITUTION:This alloy consists of,...

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Main Authors TSUJI ICHIROU, ITOU AKI, TAKEIRI TOSHIKI, USUDA HIROSHI, KAWAI HISATAKA, YUGE MAKOTO, SAHIRA TATEAKI, KOJIMA TOSHIO
Format Patent
LanguageEnglish
Published 04.09.1982
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:PURPOSE:To obtain a solubilization hardening type heat resistant Ni alloy with superior cold workability, high tensile strength at high timp., high fatigue strength and superior oxidation resistance by specifying the percentages of C, Ca, Cr, Co, Mo and W in Ni. CONSTITUTION:This alloy consists of, by weight, 0.001-0.15% C, 0.0005-0.05% Ca, 20.0-26.0% Cr, 4.7-9.4% Co, 5.0-16.0% Mo, 0.5-4.0% W (Mo+W=9.0- 16.5%) and the balance Ni with inevitable impurities or further contains 0.001- 0.15% each of Y and/or a rare earth element, and/or 0.01-1.0% one or more among Nb, V and Ta. By combinedly adding Mo and W to Ni-Cr with superior oxidation resistance and workability, the strength at high temp. is enhanced, and the total amount of Mo and W is regulated not to deteriorate the cold workability. Ca improves the characteristics at high temp. and extends the upper limit of the Mo and W content. Co can increase the strength at high temp. without deteriorating the cold workability.
Bibliography:Application Number: JP19810029678