Volume-averaged modeling of multiphase flow phenomena during alloy solidification

M Wu, A Ludwig, A Kharicha - Metals, 2019 - mdpi.com
The most recent developments and applications in volume-averaged modeling of
solidification processes have been reviewed. Since the last reviews of this topic by …

Heterogeneous nucleation and grain growth of inoculated aluminium alloys: An integrated study by in-situ X-radiography and numerical modelling

Y Xu, D Casari, Q Du, RH Mathiesen, L Arnberg, Y Li - Acta Materialia, 2017 - Elsevier
A comprehensive study on the heterogeneous nucleation and grain growth of Al-10 wt.% Cu
alloys inoculated with Al-5Ti-1B was carried out. To further reveal the solute segregation …

Revealing the heterogeneous nucleation behavior of equiaxed grains of inoculated Al alloys during directional solidification

Y Xu, D Casari, RH Mathiesen, Y Li - Acta Materialia, 2018 - Elsevier
An in-situ study on the directional solidification of an inoculated Al-20 wt% Cu alloy under
well-controlled constant cooling rates and temperature gradients has been carried out using …

[HTML][HTML] Simulation of macrosegregation in a 2.45-ton steel ingot using a three-phase mixed columnar-equiaxed model

J Li, M Wu, A Ludwig, A Kharicha - International journal of heat and mass …, 2014 - Elsevier
A three-phase mixed columnar-equiaxed solidification model is used to calculate the
macrosegregation in a 2.45 ton steel ingot. The main features of mixed columnar-equiaxed …

A three-phase model for mixed columnar-equiaxed solidification

M Wu, A Ludwig - Metallurgical and Materials Transactions A, 2006 - Springer
A three-phase model for mixed columnar-equiaxed solidification is presented in this article.
The three phases are the parent melt as the primary phase, as well as the solidifying …

Growth and interaction of dendritic equiaxed grains: In situ characterization by synchrotron X-ray radiography

A Bogno, H Nguyen-Thi, G Reinhart, B Billia… - Acta Materialia, 2013 - Elsevier
This paper addresses dendritic equiaxed growth during grain structure formation in alloy
solidification, and focuses on the growth and interaction of primary dendrite arms, which …

Modeling equiaxed solidification with melt convection and grain sedimentation—I: Model description

M Wu, A Ludwig - Acta Materialia, 2009 - Elsevier
Part I of this two part investigation presents a modified volume-averaged equiaxed
solidification model which accounts for nucleation, globular grain growth, globular-to …

Modeling of globular equiaxed solidification with a two-phase approach

A Ludwig, M Wu - Metallurgical and Materials Transactions A, 2002 - Springer
A two-phase volume averaging model for globular equiaxed solidification is presented.
Treating both liquid and solid (disperse grains) as separated but highly coupled …

Time-resolved x-ray imaging of aluminum alloy solidification processes

RH Mathiesen, L Arnberg, K Ramsøskar… - … Materials Transactions B, 2002 - Springer
Time-resolved direct-beam X-ray imaging, with intense, coherent, and monochromatic third-
generation synchrotron radiation, and a high-resolution fast-readout detector system have …

Modelling mixed columnar-equiaxed solidification with melt convection and grain sedimentation–Part I: Model description

M Wu, A Fjeld, A Ludwig - Computational Materials Science, 2010 - Elsevier
Part I of this two-part investigation presents a volume-averaging multiphase solidification
model that accounts for mixed columnar-equiaxed solidification, non-dendritic and dendritic …