Environmental embrittlement in L1 sub 2 -ordered (Fe,Co) sub 3 V

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Scripta Metallurgica; (United States)

OSTI ID:5343093

Nishimura, C ^[1]; Liu, C T ^[2]

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1. National Research Inst. for Metals, Tokyo 153 (JP)
2. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

Recent studies have demonstrated that a number of ordered intermetallics exhibit environmental embrittlement when tested in various environments at ambient temperatures. The intermetallics Co{sub 3}Ti, FeAl, Fe{sub 3}Al and Ni{sub 3}(Al,Mn) all exhibit a substantial reduction in tensile ductility when tested in air instead of vacuum or dry oxygen environment. (Fe, Co){sub 3}V alloys with a Li{sub 2} type ordered structure have been reported to be ductile at room temperature, as well as other Li{sub 2} type compounds such as Co{sub 3}Ti, Ni{sub 3}(Al,Mn) and boron-doped Ni{sub 3}Al. However, the environmental effect in (Fe,Co){sub 3}V, which is chemically similar to Co{sub 3}Ti, has not been studied yet. In this paper, the authors study the effect of test environment on tensile properties of (Fe,Co){sub 3}V, which, like other Li{sub 2} intermetallics containing reactive elements, also exhibits environmental embrittlement at ambient temperatures.

• OSTI ID: 5343093
• Journal Information: Scripta Metallurgica; (United States), Journal Name: Scripta Metallurgica; (United States) Vol. 25:1; ISSN 0036-9748; ISSN SCRMB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALKALI METALS
ALLOYS
BORON ADDITIONS
BORON ALLOYS
COBALT ALLOYS
COBALT BASE ALLOYS
DUCTILE-BRITTLE TRANSITIONS
DUCTILITY
ELEMENTS
EMBRITTLEMENT
ENVIRONMENTAL IMPACTS
INTERMETALLIC COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LITHIUM
MECHANICAL PROPERTIES
METALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
TENSILE PROPERTIES
VANADIUM ADDITIONS
VANADIUM ALLOYS