Analysis of phase decomposition in Al-Zn and Al-Zn-Cu alloys by phase field method

Victor M. Lopez-Hirata, Erika O. Avila-Davila, Maribel L. Saucedo-Muñoz, David Villegas-Cardenas, Arturo Ortiz-Mariscal

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The application of phase field method, based on the Cahn-Hilliard equation, was investigated to simulate the early stages of phase decomposition during the isothermal aging of Al-Zn and Al-Zn-Cu alloys. The simulation results indicated that the start of phase decomposition, increase in modulation amplitude, took place during the aging of binary alloys at temperatures of 100-300 °C for times up to 50 h, while the start of phase decomposition occurred during the aging of ternary alloys at temperatures of 400-550 °C for times equal to or longer than 3600 s. This analysis also showed that the morphology of the decomposed phases is irregular and interconnected in both of the aged alloys. Likewise, the equilibrium composition of the decomposed phases for both alloys was in good agreement with the predicted values in the equilibrium phase diagrams.

Original languageEnglish
Title of host publicationPTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
EditorsLong-Qing Chen, Matthias Militzer, Gianluigi Botton, James Howe, Chadwick Sinclair, Hatem Zurob
PublisherInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages313-320
Number of pages8
ISBN (Electronic)9780692437360
StatePublished - 2015
EventInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015 - Whistler, Canada
Duration: 28 Jun 20153 Jul 2015

Publication series

NamePTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

Conference

ConferenceInternational Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
Country/TerritoryCanada
CityWhistler
Period28/06/153/07/15

Keywords

  • Aging
  • Al-Zn and Al-Zn-Cu alloys
  • Phase decomposition

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