Improvements relating to nickel-chromium-cobalt alloys

Improvements relating to nickel-chromium-cobalt alloys

High temperature alloys resistant to attack by sulphur contain in percentage by weight: A suitable heat treatment consists of solution-treating the alloy for 1-8 hours in the range 1000-1250 DEG C., followed by air-cooling. If the temperature used exceeds 1150 DEG C. a second treatment of 4-24 hour...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LEWIS HARRY, FRANKLIN ARTHUR WILLIAM, BARBER JOHN BRIAN
Format: Patent
Sprache:eng
Schlagworte:
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:High temperature alloys resistant to attack by sulphur contain in percentage by weight: A suitable heat treatment consists of solution-treating the alloy for 1-8 hours in the range 1000-1250 DEG C., followed by air-cooling. If the temperature used exceeds 1150 DEG C. a second treatment of 4-24 hours within the range 800-1100 DEG C. should follow, also terminated by air-cooling, and the alloy in either case is then hardened by heating for 4-48 hours in the range 650-850 DEG C. Specification 733,489 is referred to.