The fracture of ordered (Fe, Co)/sub 3/V

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02644201· OSTI ID:6244541

Liu, C T; Schulson, E M

Observations have been made of fracture surfaces deformed at low strain rates (3.3 and 42 X 10/sup -3/ S/sup -1/) in tension at temperatures from 20 to 1000/sup 0/C, that is, above and below the order/disorder transformation temperature of 950 + or - 10/sup 0/C. From 20 to 700/sup 0/C, transgranular fracture occurs via the nucleation, growth, and coalescence of microvoids; high ductilities are obtained (34 to 44 pct). From 700 to 960/sup 0/C, the fracture mode changes from transgranular to intergranular and ductility falls to a minimum of 4 pct. At 1000/sup 0/C a third mode operates consisting of localized dynamic recrystallization followed by boundary sliding of recrystallized grains; ductility rises sharply. The underlying mechanisms are supported through additional experiments performed at higher strain rates.

• Research Organization: Oak Ridge Nat. Lab., Oak Ridge, TN
• OSTI ID: 6244541
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 15A:4; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
COBALT ALLOYS
CRACK PROPAGATION
DUCTILITY
FRACTURE MECHANICS
FRACTURE PROPERTIES
IRON ALLOYS
MECHANICAL PROPERTIES
MECHANICS
NUCLEATION
ORDER-DISORDER TRANSFORMATIONS
PHASE TRANSFORMATIONS
RECRYSTALLIZATION
STRAIN RATE
TEMPERATURE EFFECTS
TENSILE PROPERTIES
VANADIUM ALLOYS