Exo-Melt: A commercially viable process

Journal Article · Thu Jun 01 04:00:00 EDT 1995 · Advanced Materials and Processes

OSTI ID:78422

Sikka, V K; Deevi, S C; Vought, J D ^[1]

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1. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

Nickel and iron aluminides are new classes of advanced materials that exhibit excellent oxidation resistance up to 1,100 C (2,000 F). Oxidation resistance and other attributes (see sidebar) make nickel and iron aluminides attractive for many applications. However, a lack of both knowledge and willingness by vendors to prepare high-aluminum-content aluminides prevented these materials from becoming commercial until recently. Now, a major breakthrough has been made with the patented ExoMelt process, which utilizes heat released between the transition metal and aluminum. Over 100 heats of Ni{sub 3}Al and Fe{sub 3}Al-base alloy compositions have been melted at Oak Ridge National Laboratory, producing several thousand pounds of nickel and iron aluminides. The process is discussed here along with some applications.

• OSTI ID: 78422
• Journal Information: Advanced Materials and Processes, Journal Name: Advanced Materials and Processes Journal Issue: 6 Vol. 147; ISSN AMAPEX; ISSN 0882-7958
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CASTING
CORROSION RESISTANT ALLOYS
FABRICATION
INTERMETALLIC COMPOUNDS
IRON BASE ALLOYS
MELTING
NICKEL BASE ALLOYS
USES