Iron-aluminum alloy for use as thermal-shock resistance material

US5411702A · kind A · utility

Assignee

• ABB Management AG · CH

Inventors

• Mohamed Nazmy · Fislisbach, CH
• Corrado Noseda · Remetschwil, CH
• Markus Staubli · Dottikon, CH

Key dates

• Filing date: Dec 28, 1993
• Grant date: May 2, 1995
• Expiry date: Dec 28, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C38/06
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The iron-aluminum alloy comprises the following constituents in atom percent: ______________________________________ 12-18 aluminum 0.1-10 chromium 0.1-2 niobium 0.1-2 silicon 0.1-5 boron 0.01-2 titanium 100-500 ppm carbon 50-200 ppm zirconium remainder iron. ______________________________________ This alloy is distinguished by high thermal-shock resistance and, at temperatures of 800.degree. C., still has comparatively good mechanical properties. The alloy can be used advantageously in components such as, for example, casings of gas turbines, which, with comparatively low mechanical loading, are subject to frequent thermal cycling.