Abstract
The search for structural alloys capable of ultrahigh temperature performance has led to the exploration of refractory multi-principal element alloys (RMPEAs). In this work, experimental results for solidification segregation and homogenization of two RMPEAs, NbTaTiW and MoNbTaTi, are compared to simulations using the Scheil and DICTRA modules in Thermo-Calc®. Scheil calculations accurately predict the observed solidification segregation, while DICTRA predicts general trends and can provide a minimum time to achieve homogenization at a given temperature.
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Change history
19 June 2023
A Correction to this paper has been published: https://doi.org/10.1007/s11661-023-07102-z
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Acknowledgments
This work was funded by the Department of Energy’s Kansas City National Security Campus which is operated and managed by Honeywell Federal Manufacturing Technologies, LLC under contract number DE-NA0002839. The electron microscopy and the contributions of author F.G. Coury were separately supported by the Center for Advanced Non-Ferrous Structural Alloys (CANFSA), a National Science Foundation Industry/University Cooperative Research Center (I/UCRC) [Award No. 1624836] at the Colorado School of Mines and the Conselho Nacional de Desenvolvimento Científico e Tecnológico – Brasil (CNPq) [Grant No. 424645/2018-1]. We also thank ATI for producing the experimental alloys studied here.
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Puerling, R., Miklas, A., Coury, F.G. et al. Thermodynamics and Kinetics of Refractory Multi-principal Element Alloys: An Experimental and Modeling Comparison. Metall Mater Trans A 54, 1070–1076 (2023). https://doi.org/10.1007/s11661-023-06980-7
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DOI: https://doi.org/10.1007/s11661-023-06980-7