Two-phase vicoplastic model for the simulation of twin roll casting
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In: Journal of materials processing technology, Vol. 286.2020, No. December, 116814, 01.12.2020.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Two-phase vicoplastic model for the simulation of twin roll casting
AU - Gomes Rodrigues, Christian
AU - Ludwig, Andreas
AU - Wu, Menghuai
AU - Kharicha, Abdellah
AU - Vakhrushev, Alexander
PY - 2020/12/1
Y1 - 2020/12/1
N2 - A two-phase Eulerian-Eulerian volume-averaged model was used to predict the outcome of the twin-roll casting process for inoculated Al-4 wt.% Cu alloys. The model is able to address the deformation of the mush during hot rolling by treating the solid/liquid mixture as a viscoplastic skeleton saturated with liquid. A parameter measuring the mean absolute deviation around the nominal composition was applied to the normalized macrosegregation distribution and the results were then used to determine an optimal process window where minimal compositional variation is achieved in the final strip. In the case of casting an 8 mm thick Al-4%Cu strip with rolls of 800 mm diameter, casting speeds between 40 and 42 mm/s and heat transfer rates given by HTCs between 5000 and 5250 W/m2/K minimize the macrosegregation deviations in the strip and thus predict an optimal strip quality.
AB - A two-phase Eulerian-Eulerian volume-averaged model was used to predict the outcome of the twin-roll casting process for inoculated Al-4 wt.% Cu alloys. The model is able to address the deformation of the mush during hot rolling by treating the solid/liquid mixture as a viscoplastic skeleton saturated with liquid. A parameter measuring the mean absolute deviation around the nominal composition was applied to the normalized macrosegregation distribution and the results were then used to determine an optimal process window where minimal compositional variation is achieved in the final strip. In the case of casting an 8 mm thick Al-4%Cu strip with rolls of 800 mm diameter, casting speeds between 40 and 42 mm/s and heat transfer rates given by HTCs between 5000 and 5250 W/m2/K minimize the macrosegregation deviations in the strip and thus predict an optimal strip quality.
KW - Alloy solidification
KW - Computational modelling
KW - Macrosegregation
KW - Twin-roll casting
KW - Two-phase flow
KW - Viscoplasticity
UR - http://www.scopus.com/inward/record.url?scp=85087407969&partnerID=8YFLogxK
U2 - 10.1016/j.jmatprotec.2020.116814
DO - 10.1016/j.jmatprotec.2020.116814
M3 - Article
AN - SCOPUS:85087407969
VL - 286.2020
JO - Journal of materials processing technology
JF - Journal of materials processing technology
SN - 0924-0136
IS - December
M1 - 116814
ER -