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A thermodynamic approach to obtain materials properties for engineering applicationsWith the ever increases in the capabilities of computers for numerical computations, we are on the verge of using these tools to model manufacturing processes for improving the efficiency of these processes as well as the quality of the products. One such process is casting for the production of metals. However, in order to model metal casting processes in a meaningful way it is essential to have the basic properties of these materials in their molten state, solid state as well as in the mixed state of solid and liquid. Some of the properties needed may be considered as intrinsic such as the density, heat capacity or enthalpy of freezing of a pure metal, while others are not. For instance, the enthalpy of solidification of an alloy is not a defined thermodynamic quantity. Its value depends on the micro-segregation of the phases during the course of solidification. The objective of the present study is to present a thermodynamic approach to obtain some of the intrinsic properties and combining thermodynamics with kinetic models to estimate such quantities as the enthalpy of solidification of an alloy.
Document ID
19940020649
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chang, Y. Austin (Wisconsin Univ. Madison, WI, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1993
Publication Information
Publication: NASA. Lewis Research Center, Workshop on the Thermophysical Properties of Molten Materials
Subject Category
Metallic Materials
Accession Number
94N25131
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19940019932Collected WorksThe 1993 NASA/ASEE Summer Faculty Fellowship Program
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