Changes in Lattice parameter in Aluminium cast Alloys due to aging

  • M. A. Delgado López Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León
  • A. G. Esmeralda Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Coahuila
  • S. Haro Rodríguez Unidad Académica de Ingeniería, Universidad Autónoma de Zacatecas
  • J. A. González Research and Development, Nemak México, S.A.
  • J. Talamantes Silva Research and Development, Nemak México, S.A.
  • F. A. Pérez González Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León
  • N. F. Garza Montes de Oca Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León
  • R. Colás Facultad de Ingeniería Mecánica y Eléctrica, Universidad Autónoma de Nuevo León
Palabras clave: Aluminium, heat treating, lattice parameter, X-ray diffraction


Aluminium alloys are widely used due to their combination of low weight and high strength resulting from heat treating, which takes place by heating-up the material at temperatures high enough for the alloying elements to dissolve into the aluminium matrix; the material is then cooled-down to room temperature at a rate fast enough for the alloying elements to remain in solution; strengthening occurs by aging, in which particles of different size, shape and nature precipitate from the supersaturated matrix promoting changes in the lattice parameter of the aluminium. X-ray diffraction analyses were conducted in different aluminium cast alloys after aging them at different temperatures for up to 100 hours, revealing that changes in the value of the lattice parameter of the aluminium matrix depends on the alloying elements. Aluminium-copper alloys have the tendency to increase the parameter due to precipitation of Al2Cu particles, whereas those that harden by precipitation of Mg2Si are affected to a lesser degree.


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