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Title: Comparative study of solute trapping and Gibbs free energy changes at the phase interface during alloy solidification under local nonequilibrium conditions

Abstract

An analytical model has been developed to describe the influence of solute trapping during rapid alloy solidification on the components of the Gibbs free energy change at the phase interface with emphasis on the solute drag energy. For relatively low interface velocity V < V{sub D}, where V{sub D} is the characteristic diffusion velocity, all the components, namely mixing part, local nonequilibrium part, and solute drag, significantly depend on solute diffusion and partitioning. When V ≥ V{sub D}, the local nonequilibrium effects lead to a sharp transition to diffusionless solidification. The transition is accompanied by complete solute trapping and vanishing solute drag energy, i.e. partitionless and “dragless” solidification.

Authors:
 [1]
  1. Russian Academy of Sciences, Institute of Problems of Chemical Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22617050
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 124; Journal Issue: 3; Other Information: Copyright (c) 2017 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALLOYS; DIFFUSION; DRAG; FREE ENTHALPY; INTERFACES; PARTITION; SIMULATION; SOLIDIFICATION; TRAPPING; VELOCITY

Citation Formats

Sobolev, S. L., E-mail: sobolev@icp.ac.ru. Comparative study of solute trapping and Gibbs free energy changes at the phase interface during alloy solidification under local nonequilibrium conditions. United States: N. p., 2017. Web. doi:10.1134/S1063776117020169.
Sobolev, S. L., E-mail: sobolev@icp.ac.ru. Comparative study of solute trapping and Gibbs free energy changes at the phase interface during alloy solidification under local nonequilibrium conditions. United States. doi:10.1134/S1063776117020169.
Sobolev, S. L., E-mail: sobolev@icp.ac.ru. Wed . "Comparative study of solute trapping and Gibbs free energy changes at the phase interface during alloy solidification under local nonequilibrium conditions". United States. doi:10.1134/S1063776117020169.
@article{osti_22617050,
title = {Comparative study of solute trapping and Gibbs free energy changes at the phase interface during alloy solidification under local nonequilibrium conditions},
author = {Sobolev, S. L., E-mail: sobolev@icp.ac.ru},
abstractNote = {An analytical model has been developed to describe the influence of solute trapping during rapid alloy solidification on the components of the Gibbs free energy change at the phase interface with emphasis on the solute drag energy. For relatively low interface velocity V < V{sub D}, where V{sub D} is the characteristic diffusion velocity, all the components, namely mixing part, local nonequilibrium part, and solute drag, significantly depend on solute diffusion and partitioning. When V ≥ V{sub D}, the local nonequilibrium effects lead to a sharp transition to diffusionless solidification. The transition is accompanied by complete solute trapping and vanishing solute drag energy, i.e. partitionless and “dragless” solidification.},
doi = {10.1134/S1063776117020169},
journal = {Journal of Experimental and Theoretical Physics},
number = 3,
volume = 124,
place = {United States},
year = {Wed Mar 15 00:00:00 EDT 2017},
month = {Wed Mar 15 00:00:00 EDT 2017}
}
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