Forgeable nickel alloy

US5755897A · kind A · utility

Assignee

• Krupp VDM GmbH · DE

Inventor

• Ulrich Brill · Dinslaken, DE

Key dates

• Filing date: Jun 3, 1996
• Grant date: May 26, 1998
• Expiry date: Jun 3, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C19/058
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An austenitic carbide-strengthened nickel/chromium/iron foregeable alloy comprises (in % by weight) 0.2 to 0.4% carbon, 25 to 30% chromium, 8 to 11% iron, more than 2.4 to 3.0% aluminum, 0.01 to 0.15% yttrium, 0.01 to 0.20% titanium, 0.01 to 0.20% niobium, 0.01 to 0.10% zirconium, 0.001 to 0.015% magnesium, 0.001 to 0.010% calcium, max 0.030% nitrogen, max 0.50% silicon, max 0.25% manganese, max 0.020% phosphorus, max 0.010% sulfur, balance nickel and unavoidable melting conditioned impurities. The quantity of precipitable carbon C* is in the range 0.083% to 0.300%, where C*=C.sub.tot. -(C.sub.diss. +C.sub.fix.Ti +C.sub.fix.Nb +C.sub.fix.Zr).