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AssigneeAsea Brown Boveri AG
InventorsWerner Balbach, Gunnar Harkeg.ang.rd, Reiner Redecker
Estimating the term…
A heat treatment process for material bodies made of a high-temperature-resistant iron-nickel superalloy of the type IN 706 comprises the following steps: solution annealing at approximately 965 to 995.degree. C. for 5 to 20 hours, stabilization annealing at approximately 775 to 835.degree. C. for 5 to 100 hours, and precipitation hardening at 715 to 745.degree. C. for 10 to 50 hours and at 595 to 625.degree. C. for 10 to 50 hours. A heat-treated material body of this kind, made of a high-temperature-resistant iron-nickel superalloy of the type IN 706 exhibits a crack growth rate of less than 0.05 mm/h and/or exhibits a minimum elongation of 2.5% without cracks at a constant strain rate of 0.05%/h and a temperature of 600.degree. C.
A heat treatment process for material bodies made of a high-temperature-resistant iron-nickel superalloy including, in weight %, up to 0.025% C, up to 0.12% Si, up to 0.35% Mn, up to 0.002% S, up to 0.015% P, 15 to 18% Cr, 40 to 43% Ni, 0.1 to 0.3% Al, up to 0.1% Ta, 1.5 to 1.8% Ti, up to 0.30% Cu, 2.8 to 3.2% Nb, up to 0.01% B, balance Fe, which comprises the following steps:
A heat treatment process for a material body made of a high-temperature-resistant iron-nickel superalloy including, in weight %, up to 0.025% C, up to 0.12% Si, up to 0.35% Mn, up to 0.002% S, up to 0.015% P, 15 to 18% Cr, 40 to 43% Ni, 0.1 to 0.3% Al, up to 0.1% Ta, 1.5 to 1.8% Ti, up to 0.30% Cu, 2.8 to 3.2% Nb, up to 0.01% B, balance Fe, the process comprising the following steps:
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