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Phenomenological Investigations on Diffusion Kinetics in Multicomponent Metallic Melts

Multicomponent diffusion in metallic melts is a very important phenomenon during the solidification/casting process of the metallic alloys. However, there exist extremely limited reports on the diffusivity information in multicomponent metallic liquids. In this chapter, a universal and effective phe... Full description

Journal Title: Diffusion Foundations 2/2018, Vol.15, pp.23-50
Main Author: Chen, Wei Min
Other Authors: Yang, Xiong , Zhang, Li Jun
Format: Electronic Article Electronic Article
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ID: E-ISSN: 2296-3642 ; DOI: http://dx.doi.org/10.4028/www.scientific.net/DF.15.23
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recordid: crossref10.4028/www.scientific.net/DF.15.23
title: Phenomenological Investigations on Diffusion Kinetics in Multicomponent Metallic Melts
format: Article
creator:
  • Chen, Wei Min
  • Yang, Xiong
  • Zhang, Li Jun
subjects:
  • Calphad-Methode
  • Diffusion
  • Hartmetall
  • Metalllegierung
  • Kinetik
  • Diffusivität
  • Mobilität
  • Simuliertes Ergebnis
  • Mehrkomponentensystem
  • Gradientenschicht
  • Physics
ispartof: Diffusion Foundations, 2/2018, Vol.15, pp.23-50
description: Multicomponent diffusion in metallic melts is a very important phenomenon during the solidification/casting process of the metallic alloys. However, there exist extremely limited reports on the diffusivity information in multicomponent metallic liquids. In this chapter, a universal and effective phenomenological approach to predict the composition- and temperature-dependent diffusivities in liquid multicomponent systems is systematically proposed. The presently proposed phenomenological method is then adopted to construct the diffusivity/mobility databases of liquid solders, cemented carbides, Co-Cr-Fe-Mn-Ni high entropy alloys and Al-Ce-Ni alloys. Then, the accurate diffusivity/mobility data are further utilized to perform the simulations of the dissolutions of the substrate into the solders, the gradient layer formation of the cemented carbides, the diffusion behavior of liquid Co-Cr-Fe-Mn-Ni high entropy alloys and the rapid solidification of Al-Ce-Ni system. The simulated results indicate that the presently proposed phenomenological method is applicable to investigate the diffusion kinetics in multicomponent metallic melts.
language:
source:
identifier: E-ISSN: 2296-3642 ; DOI: http://dx.doi.org/10.4028/www.scientific.net/DF.15.23
fulltext: fulltext
issn:
  • 22963642
  • 2296-3642
url: Link


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subjectCalphad-Methode ; Diffusion ; Hartmetall ; Metalllegierung ; Kinetik ; Diffusivität ; Mobilität ; Simuliertes Ergebnis ; Mehrkomponentensystem ; Gradientenschicht ; Physics;
descriptionMulticomponent diffusion in metallic melts is a very important phenomenon during the solidification/casting process of the metallic alloys. However, there exist extremely limited reports on the diffusivity information in multicomponent metallic liquids. In this chapter, a universal and effective phenomenological approach to predict the composition- and temperature-dependent diffusivities in liquid multicomponent systems is systematically proposed. The presently proposed phenomenological method is then adopted to construct the diffusivity/mobility databases of liquid solders, cemented carbides, Co-Cr-Fe-Mn-Ni high entropy alloys and Al-Ce-Ni alloys. Then, the accurate diffusivity/mobility data are further utilized to perform the simulations of the dissolutions of the substrate into the solders, the gradient layer formation of the cemented carbides, the diffusion behavior of liquid Co-Cr-Fe-Mn-Ni high entropy alloys and the rapid solidification of Al-Ce-Ni system. The simulated results indicate that the presently proposed phenomenological method is applicable to investigate the diffusion kinetics in multicomponent metallic melts.
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