Dilatancy and rheology at 0–60% solid during equiaxed solidification

3D samples of NH4Cl-H2O solutions were solidified under defined experimental conditions. The occurring melt convection was investigated by Particle Image Velocimetry (PIV). The occurrence of NH4Cl crystals was observed optically and first attempts were made to quantitatively measure its number density, size distribution and sedimentation rate by PIV and Particle Tracking (PT). In order to prove the reproducibility of the results several experimental runs with equal and slightly modified conditions were analyzed.

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A Nucleation Progenitor Function approach to polycrystalline equiaxed solidification modelling with application to a microgravity transparent alloy experiment observed in-situ

Acta Materialia ◽

10.1016/j.actamat.2018.02.012 ◽

2018 ◽

Vol 148 ◽

pp. 289-299

Author(s):

Shaun McFadden ◽

Robin P. Mooney ◽

Laszlo Sturz ◽

Gerhard Zimmermann

Keyword(s):

Function Approach ◽

Equiaxed Solidification

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Combined analytical/numerical modelling of nucleation and growth during equiaxed solidification under the influence of thermal convection

Computational Materials Science ◽

10.1016/j.commatsci.2009.04.016 ◽

2009 ◽

Vol 46 (4) ◽

pp. 777-784 ◽

Cited By ~ 26

Author(s):

Wajira U. Mirihanage ◽

David J. Browne

Keyword(s):

Numerical Modelling ◽

Thermal Convection ◽

Nucleation And Growth ◽

Equiaxed Solidification

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Numerical study of dendrite coherency during equiaxed solidification by the Discrete Element Method

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/33/1/012071 ◽

2012 ◽

Vol 33 ◽

pp. 012071

Author(s):

L Yuan ◽

C O'Sullivan ◽

C M Gourlay

Keyword(s):

Discrete Element Method ◽

Numerical Study ◽

Discrete Element ◽

Equiaxed Solidification ◽

Dendrite Coherency ◽

Element Method

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A Model for Initial Spherical Growth during Equiaxed Solidification

International Journal of Nonlinear Sciences and Numerical Simulation ◽

10.1515/ijnsns.2008.9.3.283 ◽

2008 ◽

Vol 9 (3) ◽

Author(s):

X. Yao

Keyword(s):

Equiaxed Solidification ◽

Spherical Growth

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On a Class of Thermo-Visco-Plastic Constitutive Equations for Semi-Solid Alloys

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.141-143.653 ◽

2008 ◽

Vol 141-143 ◽

pp. 653-658 ◽

Cited By ~ 2

Author(s):

Stefan Benke ◽

G. Laschet

Keyword(s):

A356 Alloy ◽

Material Model ◽

Viscoplastic Material ◽

Micro Structure ◽

Material Models ◽

Equiaxed Solidification ◽

Coherency Temperature ◽

Yield Functions ◽

Semi Solid ◽

Solid Alloys

The behavior of semi-solid alloys is quite different in tension, compression and shear and depends strongly on the morphology of the micro-structure. This article outlines a generalized viscoplastic material model for semi-solid alloys which reflects this complex viscoplastic behavior. From the generalized model a number of well known yield functions and viscoplastic material models for semi-solid and solid materials can be reproduces. The general model is applied to describe the behavior of the semi-solid A356 alloy below the coherency temperature during equiaxed solidification.

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