Homogenisation of Cast Microstructures: Thermodynamic Calculation and Kinetic Simulation

Zhan Li Guo; Alfred Peter Miodownik; Rong Shan Qin

doi:10.4028/www.scientific.net/MSF.654-656.1532

Paper Titles

Three-Dimensional Modeling and Simulation of Dendrite Morphology of Cast Mg Alloys
p.1516

A New Algorithm of Phase Field Approach to Polycrystalline Dendritic Solidification in Two and Three Dimensions
p.1520

Phase Field Modelling of Dendrite Fragmentation during Thermal Shock
p.1524

A Cellular Automaton Model with the Lower Mesh-Induced Anisotropy for Dendritic Solidification of Pure Substance
p.1528

Homogenisation of Cast Microstructures: Thermodynamic Calculation and Kinetic Simulation
p.1532

Modeling of Microstructure Development in a Continuously Solidified Immiscible Alloy
p.1536

Thermal Modeling of Direct Digital Melt-Deposition Processes
p.1540

Physical and Numerical Simulation of Flow and Temperature in Molten Pool during Strip Casting Process
p.1545

Numerical Simulation of Bubbles Expansion and Solidification of Metal Foams
p.1549

HomeMaterials Science ForumMaterials Science Forum Vols. 654-656Homogenisation of Cast Microstructures:...

Homogenisation of Cast Microstructures: Thermodynamic Calculation and Kinetic Simulation

Abstract:

This paper uses a combination of thermodynamic calculation and kinetic simulation to model the homogenisation process of cast microstructure for multi-component alloys. The approach assumes that the solute segregation profile across the half dendrite arm spacing can be scaled to the solute concentration profile during solidification as generated by a Scheil type calculation. When secondary phases dissolve during homogenisation, they are treated as an additional fraction of pseudo-eutectic to the initial solute concentration profile of the primary solution phase. The methodology is compared with the assumptions made by other authors, highlighting the significant advantages in the present treatment. Examples are drawn from a cast nickel-based superalloy.

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Materials Science Forum (Volumes 654-656)

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1532-1535

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https://doi.org/10.4028/www.scientific.net/MSF.654-656.1532

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Online since:

June 2010

Authors:

Zhan Li Guo, Alfred Peter Miodownik, Rong Shan Qin

Keywords:

Dissolution Kinetics, JMatPro, Simulation, Thermodynamic

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