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http://ciateq.repositorioinstitucional.mx/jspui/handle/1020/320| Numerical and experimental analyses of the effect of heat treatments on the phase stability of Inconel 792 | |
| MARIA MAGDALENA CUETO RODRIGUEZ Erika Osiris Avila-Davila Victor Manuel Lopez-Hirata MARIBEL LETICIA SAUCEDO MUÑOZ Luis Manuel Palacios-Pineda Luis Gerardo Trápaga Martínez Juan Manuel Alvarado-Orozco | |
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| https://www.hindawi.com/journals/amse/2018/4535732/ 10.1155/2018/4535732 | |
| A study about the precipitation and phase stability was carried out in an IN-792 superalloy used as a blade in a gas turbine. Microstructure analysis was conducted experimentally on three different cross sections of the blade designated as high temperature (HT), medium temperature (MT), and low temperature (LT). To identify the HT, MT, and LT sections, a numerical thermal analysis was performed using ANSYS software. To obtain the distribution gradient of temperature in the blade, the real conditions of operation in steady state of the gas turbine were considered. A numerical study about the occurrence of phases in the IN-792 superalloy was carried out with ,ermo-Calc and TC-PRISMA software.,eanalysis of the as-cast IN-792 superalloy with Scheil-Gulliver equations permitted to explain the phase formation during the solidification process. ,e calculated timetemperature- precipitation (TTP) diagram explains consistently the precipitation process observed after two different heat treatment conditions applied experimentally and numerically to regenerate the original microstructure of the IN-792 superalloy. ,e experimental results were consistent with the calculated isoplethic and TTP diagrams. In terms of accuracy, the further development of the ,ermo-Calc databases for thermodynamic calculations in superalloys is evident. It was possible to calculate precipitation temperatures and the local evolution of precipitated particles for two different heat treatment conditions. Copyright © 2018 Maria M. Cueto-Rodriguez et al. ,is is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conflicts of Interest. The authors declare that there are no conflicts of interest regarding the publication of this paper. Acknowledgments. The authors wish to acknowledge the financial support from CONACYT and from TecNM (6554.18-P project). The thermo-Calc and TC-PRISMA data used to support the findings of this study were supplied by thermo-Calc software under perpetual license and so cannot be made freely available. Also, the thermo-Calc and TC-PRISMA data used are mentioned in references [26, 28, 30] within the article. Previously reported computational fluid dynamics (CFD) data were used to support this study and are available in reference [24], within the article. These prior studies were used to calculate the service temperatures inside the blade. | |
| Hindawi | |
| 2018 | |
| Artículo | |
| Advances in Materials Science and Engineering | |
| Inglés | |
| Público en general | |
| Maria M. Cueto-Rodriguez, Erika O. Avila-Davila, Victor M. Lopez-Hirata, et al., “Numerical and Experimental Analyses of the Effect of Heat Treatments on the Phase Stability of Inconel 792,” Advances in Materials Science and Engineering, vol. 2018, Article ID 4535732, 16 pages, 2018. https://doi.org/10.1155/2018/4535732. | |
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