Weldability of nickel and iron aluminides

Conference · Sun Dec 31 23:00:00 EST 1989

OSTI ID:6717206

Ash, D I; Edwards, G R ^[1]; Maguire, M C ^[2]

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1. Colorado School of Mines, Golden, CO (USA)
2. Sandia National Labs., Albuquerque, NM (USA)

The weldability of alloys based on Ni{sub 3}Al and Fe{sub 3}Al is discussed. Both of these ordered alloy systems may experience problems associated with welding. In the case of Ni{sub 3}Al alloys, limited hot ductility contributes to heat-affected zone cracking. Fe{sub 3}Al alloys experience similar difficulties in zone cracking. Fe{sub 3}Al alloys experience similar difficulties in welding due to excessive grain embrittlement due to the presence of water vapor. Advances in both alloying and substructural refinement to improve the weldability are reviewed. 18 refs., 10 figs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6717206
• Report Number(s): SAND-90-1694C; CONF-901095--2; ON: DE90013498
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
BORON ADDITIONS
BORON ALLOYS
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
CRACKS
DEFORMATION
DOPED MATERIALS
DUCTILITY
EMBRITTLEMENT
HEAT AFFECTED ZONE
INTERMETALLIC COMPOUNDS
MATERIALS
MECHANICAL PROPERTIES
NICKEL ALLOYS
TENSILE PROPERTIES
WELDABILITY
ZONES