Fabrication and processing of iron aluminides

Conference · Wed Jan 01 00:00:00 EST 1992

OSTI ID:5030265

Sikka, V K; Viswanathan, S

The Fe{sub 3}Al-based alloys have been shown to exhibit room-temperature ductility values of 15 to 19% by the control of composition and thermomechanical processing steps. The scale-up of one of the compositions to 2270-kg (5000-lb) electroslag-remelted (ESR) round ingot and 3272-kg (7200-lb) vacuum-induction-melted (VIM) slab ingot is described. Microstructural and mechanical property data are presented on small pieces sectioned from these ingots. The effects of final rolling temperature and the final annealing treatment on room-temperature ductility were investigated for the ESR ingot. A study of iron-aluminide binary alloys revealed that the environmental effects on room-temperature ductility values were absent for {le}8.5 wt % Al. The increasing aluminum content and the development of ordered structure resulted in increased environmental effects. Applications and a brief description of their status are described. Based on the combined property and cost advantage, continued development of iron aluminide is recommended.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5030265
• Report Number(s): CONF-9205123-4; ON: DE92015231
• Resource Relation: Conference: 6. annual fossil energy materials conference, Oak Ridge, TN (United States), 12-14 May 1992
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
DUCTILITY
FABRICATION
IRON BASE ALLOYS
ANNEALING
ELECTRON SPIN RESONANCE
MECHANICAL PROPERTIES
MICROSTRUCTURE
ALLOYS
CRYSTAL STRUCTURE
HEAT TREATMENTS
IRON ALLOYS
MAGNETIC RESONANCE
RESONANCE
TENSILE PROPERTIES
360101* - Metals & Alloys- Preparation & Fabrication
360103 - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies