Effect of chromium on properties of Fe sub 3 Al

Journal Article · Fri Sep 01 00:00:00 EDT 1989 · Journal of Materials Research; (USA)

DOI:https://doi.org/10.1557/JMR.1989.1156· OSTI ID:5422583

McKamey, C G; Horton, J A; Liu, C T ^[1]

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1. Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6115 (US)

The effects of the addition of chromium on several properties of Fe{sub 3}Al, including tensile strength and ductility, fracture behavior, and slip and dislocation characteristics, were studied. Alloying with up to 6 at.% chromium results in an increase in room temperature ductility from approximately 4% to 8--10%. Along with this increase in ductility, the addition of chromium produces a change in fracture mode from transgranular cleavage to a mixed mode of intergranular-transgranular cleavage, and a change in slip behavior from coarse straight slip to fine wavy slip. These phenomena are discussed in terms of the effect of chromium on the antiphase boundary energies and dislocation characteristics.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5422583
• Journal Information: Journal of Materials Research; (USA), Journal Name: Journal of Materials Research; (USA) Vol. 4:5; ISSN JMREE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
CHROMIUM
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
CLEAVAGE
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
DUCTILITY
ELEMENTS
ENERGY LEVELS
FAILURES
FRACTURES
IRON ALLOYS
LINE DEFECTS
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
METALS
MICROSTRUCTURE
SLIP
TENSILE PROPERTIES
TRANSITION ELEMENTS