Tensile and impact properties of iron-aluminum alloys

Conference · Fri Dec 31 04:00:00 EST 1993

OSTI ID:10177719

Alexander, D J; Sikka, V K

Tensile and impact tests have been conducted on specimens from a series of five heats of iron-aluminum alloys. These results have been compared to data for the iron aluminide alloy FA-129. The transition temperatures of all of the Fe{sub 3}Al-based alloys were similar, but the simple ternary alloy had a much higher upper-shelf energy. The reduced aluminum alloys [based on Fe-8Al (wt %)] had lower transition temperatures and higher upper-shelf energy levels than the Fe{sub 3}Al-type alloys. The reduced aluminum alloy with yttrium showed excellent tensile properties, with a room temperature total elongation of 40%, and a very high upper-shelf energy level. Despite the high tensile ductility at room temperature, the transition temperature of the yttrium-containing alloy was still about 150 C, compared to approximately 300 C for FA-129. In general, the microstructures were coarse and anisotropic. The fracture processes were dominated by second-phase particles.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10177719
• Report Number(s): CONF-931009--28; ON: DE94017750
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103
ALUMINIUM ALLOYS
FRACTURE PROPERTIES
IRON BASE ALLOYS
MECHANICAL PROPERTIES