High-temperature thermophysical properties of 18Cr–9Ni–2.95Cu–0.58Nb–0.1C (mass%) austenitic stainless steel

This paper presents the results of a study on high-temperature thermophysical properties of an indigenously developed 18Cr–9Ni–2.95Cu–0.58Nb–0.1C (mass%) austenitic stainless steel. The temperature-induced phase evolution under equilibrium conditions has been theoretically simulated using Thermocalc...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2018-03, Vol.131 (3), p.2749-2761
Main Authors: Tripathy, Haraprasanna, Rai, Arun Kumar, Hajra, Raj Narayan, Vijaya Shanthi, N., Subramanian, Raju, Saibaba, Saroja
Format: Article
Language:English
Subjects:
Analytical Chemistry
Austenitic stainless steel
Austenitic stainless steels
Calorimetry
Chemistry
Chemistry and Materials Science
Comparative analysis
Computer simulation
Diffusivity
Dilatometry
Enthalpy
Equilibrium conditions
Heat treatment
Inorganic Chemistry
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
Stainless steel
Thermal conductivity
Thermal diffusivity
Thermal expansion
Thermal properties
Thermodynamic properties
Thermophysical properties
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Summary:This paper presents the results of a study on high-temperature thermophysical properties of an indigenously developed 18Cr–9Ni–2.95Cu–0.58Nb–0.1C (mass%) austenitic stainless steel. The temperature-induced phase evolution under equilibrium conditions has been theoretically simulated using Thermocalc . Accurate estimates of enthalpy, bulk thermal expansion and thermal diffusivity have been obtained as a function of temperature, using drop calorimetry; dilatometry; and laser flash transient thermal diffusivity techniques, respectively. The experimental measurements were subject to robust analytical treatment to obtain specific heat, linear thermal expansion coefficient, density and thermal conductivity, in the temperature range of 298–1273 K. A comparative analysis of the experimental data obtained in this study with the reported values for other 300-series of austenitic stainless steels has also been carried out. In addition, a quasiharmonic Debye–Grüneisen modeling of thermal properties has also been attempted.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-017-6792-4