TY - JOUR

T1 - Microsegregation Model with Local Equilibrium Partition Coefficients During Solidification of Steels

AU - You, Dali

AU - Bernhard, Christian

AU - Wieser, Gerhard

AU - Michelic, Susanne

PY - 2016/7

Y1 - 2016/7

N2 - A microsegregation model with local partition coefficients and temperature-dependent diffusion coefficients based on the model of Ohnaka (I. Ohnaka, Trans. Iron Steel Ins. Jpn. 1986, 26, 1045) is proposed. In this model, multicomponent alloy effects and precipitations are considered, and the peritectic reaction can be indicated using the thermodynamic library ChemApp. The proposed model is validated by comparing the results to other models from the literature and to measured data. Local partition coefficients are calculated, and their significant influence on microsegregation prediction is shown. The characteristic temperatures determined using the proposed model are in good agreement with measured values.

AB - A microsegregation model with local partition coefficients and temperature-dependent diffusion coefficients based on the model of Ohnaka (I. Ohnaka, Trans. Iron Steel Ins. Jpn. 1986, 26, 1045) is proposed. In this model, multicomponent alloy effects and precipitations are considered, and the peritectic reaction can be indicated using the thermodynamic library ChemApp. The proposed model is validated by comparing the results to other models from the literature and to measured data. Local partition coefficients are calculated, and their significant influence on microsegregation prediction is shown. The characteristic temperatures determined using the proposed model are in good agreement with measured values.

KW - microsegregation

KW - partition coefficients

KW - temperatures

U2 - 10.1002/srin.201500216

DO - 10.1002/srin.201500216

M3 - Article

VL - 87.2016

SP - 840

EP - 849

JO - Steel research international

JF - Steel research international

SN - 1611-3683

IS - 7

ER -