Planar to cellular transition during the directional solidification of alloys

Journal Article · Thu Oct 01 04:00:00 EDT 1987 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(87)90141-6· OSTI ID:5614782

Eshelman, M A; Trivedi, R

The planar to cellular interface transition during the directional solidification of a binary alloy has been studied in the succinonitrile-acetone system. The interface velocity at which the planar interface becomes unstable and the wave numbers of the initially unstable interface have been precisely determined and compared with the linear stability analysis. Critical experiments have been carried out to show that the planar to cellular bifurcation is subcritical so that a finite amplitude perturbation below the critical velocity can also give rise to planar interface instability.

• Research Organization: Ames Lab., USDOE and the Dept. of Materials Science and Engineering, Iowa State Univ., Ames, IA 50011
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5614782
• Journal Information: Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 35:10; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ACETONE
ALLOY SYSTEMS
BINARY ALLOY SYSTEMS
CARBOXYLIC ACIDS
CRYSTAL-PHASE TRANSFORMATIONS
DICARBOXYLIC ACIDS
INTERFACES
KETONES
NITRILES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHASE TRANSFORMATIONS
SOLIDIFICATION
STABILITY
SUCCINIC ACID