Effect of Noble Metal Addition on the Disorder Dynamics of Ni3Al by Means of Monte Carlo Simulation
| Autor: | José G. Chacón-Nava, J.P. Flores-De los Rios, S.E. Diaz-Mendez, J. J. Ramos-Hernandez, J. Porcayo-Calderon, E. Porcayo-Palafox, G. K. Pedraza-Basulto, M. Sanchez-Carrillo, C.D. Arrieta-Gonzalez |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Work (thermodynamics)
Materials science Monte Carlo method Intermetallic Thermodynamics 02 engineering and technology Activation energy engineering.material Radial distribution function 01 natural sciences Article 0103 physical sciences General Materials Science intermetallics pair correlation function site occupancy Monte Carlo simulation 010302 applied physics ordering energies Doping order/disorder transformation 021001 nanoscience & nanotechnology engineering Noble metal 0210 nano-technology Stoichiometry |
| Zdroj: | Materials Volume 13 Issue 21 |
| ISSN: | 1996-1944 |
| Popis: | In this work, the effect of the addition of noble metals on the order&ndash order disorder process of the L12 structure corresponding to the intermetallic Ni3Al is analyzed. Stoichiometric, nonstoichiometric, and quasi-binary compositions doped with noble metals such as Ag, Au, Pd, and Pt (1 at%) were analyzed. It was observed that depending on the composition, there is a modification in the activation energies calculated from the two time constants that characterize the disorder process. The statistic of atomic jumps was typified based on the configuration of the window to be crossed and, with this, it was identified that the origin of the negative activation energy of the long disorder process is due to an increase in the corresponding energy of the AlAl-Ni jump through unnatural windows. |
| Databáze: | OpenAIRE |
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