RT Journal Article
T1 Crystallisation of amorphous Al-Y-Ni-(Cu) alloys
A1 Gómez Cuevas, Francisco de Paula
A1 Lozano Pérez, Sergio
A1 Aranda Louvier, Rosa María
A1 Ternero Fernández, Fátima
AB The nanocrystallisation behaviour and subsequent intermetallics formation of an amorphous Al88-Y4-Ni8 alloy has been studied. A 1 at.% of Al or Ni was also substituted by Cu and its effect studied. Differential scanning calorimetry has been used to measure the thermal stability of these amorphous alloys. Transmission electron microscopy showed the smaller size of the nanocrystals obtained during primary crystallisation when Cu is added. Using three-dimensional atom probe, it has been checked that Cu is homogeneously distributed in the amorphous matrix, not contributing to a heterogeneous nucleation around Cu clusters during the formation of nanocrystals. Transmission electron microscopy and X-rays diffraction are used to study the controversial intermetallics occurrence at higher temperatures. The sequence and characteristics of the intermetallics appearing in these alloys were sensitive to the presence of Cu. The evolution of these intermetallics, up to 600 °C, has been studied. Findings are compared with previous studies.
PB Elsevier
SN 0022-3093
SN 1873-4812 (electrónico)
YR 2019
FD 2019-03
LK https://hdl.handle.net/10272/23147
UL https://hdl.handle.net/10272/23147
LA eng
NO Cuevas, F. G., Lozano-Perez, S., Aranda, R. M., & Ternero, F. (2019). Crystallisation of amorphous Al-Y-Ni-(Cu) alloys. In Journal of Non-Crystalline Solids (Vol. 512, pp. 15–24). Elsevier BV. https://doi.org/10.1016/j.jnoncrysol.2019.02.013
NO The Ministerio de Economía y Competitividad (Spain) and Feder (EU) through the research project DPI2015-69550-C2-2-P are gratefully acknowledged for financial support. The authors also wish to thank Prof. Brian Cantor and Dr. Paul J. Warren for helpful discussion and facilitating the initial experiments carried out at Materials Department of Oxford University.
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026