PROCEDIMENTO PER MIGLIORARE LE PROPRIETA' TECNOLOGICHE DI LEGHE A BASE DI RAME-NICHEL RESISTENTI ALLA CORROSIONE

Properties of corrosion resistant copper-nickel alloys, of compsn. 4-35% Ni, 0-3% Mn, 0-3% Fe, 0-3% Si, balance Cu and impurities, are improved by subjecting the alloys, before or after hot working, to a homogenisation anneal at 700-1050 (pref. 800-1000) deg.C for at least 1 hr., and then cooling, u...

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Hauptverfasser:	LUDORF HARALD, RICHTER FRIEDHELM
Format:	Patent
Sprache:	ita
Schlagworte:	CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	Properties of corrosion resistant copper-nickel alloys, of compsn. 4-35% Ni, 0-3% Mn, 0-3% Fe, 0-3% Si, balance Cu and impurities, are improved by subjecting the alloys, before or after hot working, to a homogenisation anneal at 700-1050 (pref. 800-1000) deg.C for at least 1 hr., and then cooling, using a rapid cooling rate over the 800-350 deg.C temp. range. Treatment improves the hot cracking resistance so that the alloys have improved weldability and hot workability.