Growth crystallography and lamellar to rod transition in directionally solidified Nb--Nb/sub 2/C eutectic composites

Journal Article · Sun Aug 01 04:00:00 EDT 1976 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02656586· OSTI ID:7334575

David, S A; Santhanam, A T; Brody, H D

The transition in morphology of the carbide phase is discussed in terms of the relative volume fraction of the phases, growth rate, and orientation relationships. The carbide morphology is influenced by the growth rate and carbon content. For constant growth rate increasing the volume fraction of the carbide phase favors the lamellar morphology. At low growth rates the lamellar morphology is favored, and at high growth rates the rod-like morphology is favored. Growth crystallography has no direct influence on the transition in carbide morphology.

• OSTI ID: 7334575
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 7:8; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360302* -- Composite Materials-- Structure & Phase Studies-- (-1987)
ALLOYS
CARBIDES
CARBON COMPOUNDS
CERMETS
COMPOSITE MATERIALS
CRYSTAL GROWTH
CRYSTAL STRUCTURE
CRYSTALLOGRAPHY
EUTECTICS
LAMELLAE
NIOBIUM ALLOYS
NIOBIUM CARBIDES
NIOBIUM COMPOUNDS
PHASE STUDIES
PHASE TRANSFORMATIONS
SOLIDIFICATION
TRANSITION ELEMENT COMPOUNDS