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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Applications of Solidification Fundamentals
Presentation Title Spheroidal Graphite Growth Studied by Synchrotron X-ray Tomography
Author(s) Mathias Karsten Bjerre, Mohammed Azeem, Niels Tiedje, Jesper Hattel, Peter Lee
On-Site Speaker (Planned) Mathias Karsten Bjerre
Abstract Scope Spheroidal graphite iron is a widely used cast material which combines strength with low price and good castability. The material properties are closely linked to the presence of spherical graphite particles which form during the solidification process. Thus, a precise description of nucleation and growth of the graphite particles is important in order to properly understand and predict the final mechanical properties of the cast component. We present the first in-situ observations from solidification of cast iron resolved in three spatial dimensions and time by synchrotron x-ray tomography. The cylindrical sample of near-eutectic SGI solidified at a constant cooling rate of 0.03 C/s. The slow cooling rate allows us to resolve the growth of spheroidal graphite particles which provides basis for quantification of nucleation and direct comparison and validation of models of graphite growth. Sectioning of the sample confirmed the nature of the observed particles.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Phase-field Simulations of Graphite Growth in Ductile Cast Iron Considering Interaction between Local Expansion and Microsegregation
4D Synchrotron X-ray Quantification of the Cellular to Dendritic Transition
4D Synchrotron X-ray Tomography of Dendritic Microstructure Evolution in a Co Based Alloy during Solidification
An Electron Microscopy Study of Graphite Growth in Nodular Cast Irons
Analytics on Large Microstructure Datasets Using Two Point Statistics: Application to Coarsening Dendritic Solid-Liquid Mixtures
Dendritic Grain Growth Competition in Directional Solidification of Alloys: A Phase-field Study
Discovery of New Grain Refiners Utilizing Crystallographic Data
Effect of Crystal Orientation Relationships on Lamellar Eutectic Solidification Microstructures
Effect of Solidification Parameters and Alloying Elements on Graphite Morphology in Ni-C Alloys
Effects of Rare Earth Oxides on the Precipitation of Graphite in Fe-C-Si Alloy
Evolution of Microstructure in Directionally Solidified Compacted Graphite Iron
Fluid Flow and Its Influence on Crystal Growth Kinetics in Undercooled Melts
Four Dimensional Real-time Studies of Metal Solidification under External Fields
In-situ Imaging of Metallic Alloy Solidification Dynamics for Advanced Manufacturing
In-situ Observation of Multiple Equiaxed Dendrite Interaction under Reduced Gravity Conditions
Influence of Crystal Orientation on the Dynamical Selection of Propagative Cellular Solidification Patterns
Inoculant Undercooling Induced Nucleation and Growth during Equiaxed Solidification: Effect of Location and Separation Distance of the Inoculants and Time
Investigating Homogenous Nucleation in Solidification of Aluminum and Iron by Molecular Dynamics Simulations
Investigation of the Metatectic Reaction in Boron Containing Steels
Lattice Boltzmann GPU Solutions for Alloy Microstructure Development and Solute Transport
Mechanisms of Surface Stability in Al-Zn Coated Steel
Microstructural Development During Thin Film Solidification: Comparison of Experiments and Simulations
Microstructure Characteristics of A356 Nanocomposites Manufactured via Ultrasonic Cavitation Processing under Controlled Solidification Conditions
Nucleation of Solidification in Confined High Aspect Ratio Films
On the Solidification Kinetics of Metal Alloys: A Study Using 3-D Phase Field Modeling and Synchrotron X-ray Image Techniques
On the Transition from Equiaxed Sedimentation to Viscoplastic Packed Bed Dynamics
Pattern Formation during Directional Solidification of the Ternary Eutectic Alloy Al-Ag-Cu under Influence of Velocity Changes
Pattern Formation during In-variant Three-phase Eutectic Growth
Pattern Formation during the Directional Solidification of Ternary Eutectic Alloys and the Influence of the Average Front Undercooling
Phase Field Modelling of Snowflakes Growth
Quantifying Dendritic Evolution in Mg Alloys Using In Situ Synchrotron Tomography
Quantitative Phase-Field Crystal Model for Coarsening in Pb-Sn Solid-Liquid Mixtures
Real-time Study on Microstructure Evolution of a Three-phased Eutectic System in Quasi-2D Samples
Scandium Effect on Undercooling and Dendrite Morphology of Al–4.5 wt.%Cu Droplets
Solidification Characteristics of CNTs/Mg Composite with Ultrasonic
Spheroidal Graphite Growth Studied by Synchrotron X-ray Tomography
Thermal Analysis of Cu-Cu2O Eutectic
Thermomechanical Properties of Metals during Solidification by Molecular Dynamics Simulations
Three Dimensional Eutectic Colony Morphologies in Multi-component, Multi-phase Alloys
Using Synchrotron X-ray Radiography to Measure the Statistics of Intermetallic Compound (IMC) Selection and Growth during Solidification

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