Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Restricted applicability of Onsager's reciprocity relations to models of interface motion
 

Summary: Restricted applicability of Onsager's reciprocity relations to models
of interface motion
Theodore Kaplan
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee37831
M. J. Aziz
Divbion of Applied Sciences,Harvard University, Cambridge, Massachusetts02138
L. J. Gray
Engineering Physicsand Mathematics Division, Oak Ridge National Laboratory, Oak Ridge,
Tennessee3 7831
(Received 21 December 1992;accepted2 August 1993)
Onsager'sreciprocity relations have beenapplied to the motion of a planar interface in a phase
transformation in a two-component system,in order to provide a test of kinetic models of alloy
solidification. Although applicable to such models in general, Onsager's relations yield no
information for a subclassof models in which the thermodynamic driving forces are linearly
dependentto first order, as is the casefor severalmodels of alloy solidtication including the
continuous growth model (CGM) of Aziz and Kaplan. As a consequence,experimental tests
will likely be required to distinguish betweenthesemodels.If the CGM is generalizedto include
diffusion in the growing phase,Onsager'srelations are applicableunder somecircumstances.
I. INTRODUCTION
Rapid solidification experiments in binary al10ys'-~

  

Source: Aziz, Michael J.- School of Engineering and Applied Sciences, Harvard University

 

Collections: Physics; Materials Science