The formation of quasicrystal phase in Al-Cu-Fe system by mechanical alloying
AUTOR(ES)
Travessa, Dilermando Nagle, Cardoso, Kátia Regina, Wolf, Witor, Jorge Junior, Alberto Moreira, Botta, Walter José
FONTE
Mat. Res.
DATA DE PUBLICAÇÃO
22/05/2012
RESUMO
In order to obtain quasicrystalline (QC) phase by mechanical alloying (MA) in the Al-Cu-Fe system, mixtures of elementary Al, Cu and Fe in the proportion of 65-20-15 (at. %) were produced by high energy ball milling (HEBM). A very high energy type mill (spex) and short milling times (up to 5 hours) were employed. The resulting powders were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). QC phase was not directly formed by milling under the conditions employed in this work. However, phase transformations identified by DSC analysis reveals that annealing after HEBM possibly results in the formation of the ψ QC phase.
Documentos Relacionados
- Obtenção e evolução da fase icosaedral quasicristalina em ligas Al-Cu-Fe e Al-Cu-Fe-B por Melt-Spinnin
- PRODUCTION OF AlCuFe QUASICRYSTAL ALLOY BY HIGH ENERGY MILLING
- Series of Nanocrystalline NiCoAlFe(Cr, Cu, Mo, Ti) High-Entropy Alloys produced by Mechanical Alloying
- Desenvolvimento de compósitos com matriz de geopolímeros reforçados com partículas de quasicristais AlCuFe
- Evaluation of mechanical alloying to obtain Cu-Al-Nb shape memory alloy
