Characterization of structure and thermophysical properties of three ESR slags

A. Plotkowski, J. Debarbadillo, Matthew J.M. Krane

Research output: Contribution to journalConference articlepeer-review

Abstract

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.

Original languageEnglish
Article number012007
JournalIOP Conference Series: Materials Science and Engineering
Volume143
Issue number1
DOIs
StatePublished - Aug 10 2016
Externally publishedYes
EventInternational Symposium on Liquid Metal Processing and Casting 2015, LMPC 2015 - Leoben, Austria
Duration: Sep 20 2015Sep 24 2015

Funding

The authors would like to acknowledge the support of the Metals Affordability Initiative, AFRL Case Number: 88ABW-2015-1871, and Special Metals Corporation for supplying samples.

FundersFunder number
Metals Affordability Initiative
Special Metals Corporation
Air Force Research Laboratory88ABW-2015-1871

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