Limit of steady-state lamellar eutectic growth

TitleLimit of steady-state lamellar eutectic growth
Publication TypeJournal Article
Year of Publication2011
AuthorsWang N, Trivedi R
Journal TitleScripta Materialia
Volume64
Pages848-851
Date Published05
ISBN Number1359-6462
Accession NumberISI:000288738400013
Keywordsalloys, eutectic phase transformation, metallic glasses, pattern formation, rapid solidification, rapid solidification conditions, undercooling
Abstract

Under rapid solidification conditions, a eutectic microstructure becomes unstable beyond a certain velocity that places a limit on the finest spacing and the largest interface undercooling that can be achieved for such a microstructure. Expressions are developed to characterize the physics that lead to the limit of eutectic growth. Activation energy for diffusion and eutectic temperature are shown to play key roles at the limit of eutectic growth, and this limit modifies the high-velocity branch of the coupled growth regime. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

URL<Go to ISI>://000288738400013
DOI10.1016/j.scriptamat.2011.01.010
Alternate JournalScripta MaterScripta Mater