Characterization of structure and thermophysical properties of three ESR slags

The structure and properties of electroslag remelting (ESR) slags were characterized. Slags samples of three compositions were obtained from industrial remelting processes at Special Metals Corporation and from casting in a laboratory vacuum induction melter. The structure of the slag samples was ob...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-07, Vol.143 (1), p.12007
Main Authors: Plotkowski, A., deBarbadillo, J., Krane, Matthew J. M.
Format: Article
Language:English
Subjects:
Differential scanning calorimetry
Electroslag casting
Electroslag melting
Electroslag remelting
Heat conductivity
Heat transfer
Melting
Slag
Structural analysis
Thermal conductivity
Thermal diffusivity
Thermophysical properties
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Summary:The structure and properties of electroslag remelting (ESR) slags were characterized. Slags samples of three compositions were obtained from industrial remelting processes at Special Metals Corporation and from casting in a laboratory vacuum induction melter. The structure of the slag samples was observed using optical and electron microscopy, and phases were identified and their relative amounts quantified using X-ray diffraction. Laser flash thermal diffusivity, density, and differential scanning calorimetry measurements for specific heat were performed to determine the bulk thermal conductivity of the samples. Sample porosity was measured as a function of depth using a serial sectioning technique, and a onedimensional computational model was developed to estimate the thermal conductivity of the fully dense slags. These results are discussed in context with previous studies, and opportunities for future research are identified. AFRL Case Number: 88ABW-2015-1871.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/143/1/012007