Influence of Pd on crystallization of Al–Ni–Sm-based ribbons
| Autor: | Emília Illeková, P. Mrafko, Peter Švec, Pavol Duhaj |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Amorphous metal
Materials science Mechanical Engineering Kinetics Metals and Alloys law.invention Crystallography Devitrification Differential scanning calorimetry Mechanics of Materials Transmission electron microscopy Electrical resistivity and conductivity law Differential thermal analysis Materials Chemistry Crystallization |
| Zdroj: | Journal of Alloys and Compounds. 483:20-23 |
| ISSN: | 0925-8388 |
| Popis: | The five-stage devitrification of rapidly quenched Al 89 Ni 6 Sm 5 and Al 86 Ni 6 Sm 5 Pd 3 ribbons has been studied by differential scanning calorimetry and electrical resistivity measurements. The formed phases have been identified by X-ray diffraction, transition electron microscopy and high-temperature differential thermal analysis. In the first stage spherical fcc-Al nano-particles develop with a very high density. After the sequential formation and modification of the grown phases the equilibrium fcc-Al, Al 3 Ni, Al 3 Sm, Al 4 Sm and Al 11 Sm 3 , eventually, equivalent with the equilibrium phases in related master-alloys have been developed. The stabilizing effect of Pd on both thermodynamics and kinetics of individual transformations has been analyzed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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