TY  - JOUR
AU  - Boussinot, G.
AU  - Hüter, C.
AU  - Spatschek, R.
AU  - Brener, Efim
TI  - Isothermal solidification in peritectic systems
JO  - Acta materialia
VL  - 75
SN  - 1359-6454
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - FZJ-2014-06799
SP  - 212 - 218
PY  - 2014
AB  - The peritectic reaction consists in the growth of the peritectic solid phase along the metastable interface between the primary solid phase and the liquid phase. We study theoretically the two-dimensional isothermal peritectic reaction in the limit of small undercoolings using the boundary-integral technique. First, we focus on the case where the liquid phase occupies a semi-infinite space and the peritectic phase presents a finger-like shape. Secondly, we investigate the case where the growth takes place in a channel of liquid phase and the peritectic phase fills the whole channel as a product of the transformation. It is found that for a critical channel width, the velocities of the channel filling and the finger-like solutions are equal. For smaller (larger) widths, the channel filling (finger-like) solution has a larger velocity and is likely to be predominant. This confirms some previously reported qualitative results of time-dependent phase-field calculations (Boussinot et al., 2010) [5]. We also discuss the relevance of our study to directional solidification experiments.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000340854200018
DO  - DOI:10.1016/j.actamat.2014.04.055
UR  - https://juser.fz-juelich.de/record/173389
ER  -