A detailed study of phase evolution in Cu-16 at. %Al and Cu-30 at. %Al alloys under different types of mechanical alloying processes
The phase stability of Cu-16 at. %Al and Cu-30 at. %Al alloys obtained by a planetary and an horizontal mills was investigated. The analysis was carried out using X-ray diffraction and various transmission electron microscopy (TEM) techniques. X-ray diffraction analysis gives a statistical overview...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/94232 |
| Acceso en línea: | http://hdl.handle.net/11336/94232 |
| Access Level: | acceso abierto |
| Palabra clave: | INTERMETALLICS MECHANICAL ALLOYING AND MILLING POWDER METALLURGY TRANSMISSION ELECTRON MICROSCOPY X-RAY DIFFRACTION https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
| Sumario: | The phase stability of Cu-16 at. %Al and Cu-30 at. %Al alloys obtained by a planetary and an horizontal mills was investigated. The analysis was carried out using X-ray diffraction and various transmission electron microscopy (TEM) techniques. X-ray diffraction analysis gives a statistical overview of the main equilibrium phases present. Meanwhile, the different TEM techniques allow the detection of either the minor phases or the ones having crystalline domains smaller than 5 nm. The solid solution equilibrium α phase was obtained using both milling processes on the Cu-16 at. %Al. Instead, the final intermetallics observed for Cu-30 at. %Al were not the equilibrium ones according to the phase diagram. The planetary mill produced a mixture of α and γ2 phases and less than a 2 at. % of β phase. The horizontal mill produced a γ2 phase and less than a 2 at. % of α2 and γÍ phases. For both compositions, the horizontal mill seems to be more efficient to achieved the equilibrium intermetallic compound. |
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