Nucleation kinetics of the γ-phase in a binary Mg-Al alloy

Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

Authors

  • Mehdi Lalpoor
  • J. S. Dzwonczyk
  • N. Hort
  • S. E. Offerman

The binary magnesium-aluminum system has been studied extensively the last decades. Surprisingly, the kinetics of nucleation of the γ-precipitates (Mg17Al12) in the α-matrix have not been determined experimentally in detail. The main goal of this research is to investigate the precipitation kinetics of the γ-phase in a Mg-Al alloy during annealing, and to understand the relation between the precipitate volume fraction and the mechanical properties of the material. Comprehensive microstructural analysis was undertaken to reveal the number density, volume fraction, and morphological changes of the γ-precipitates after solution heat treatment (homogenization) and during subsequent annealing below the solvus temperature. As a result, the incubation time and steady state nucleation rate of γ-precipitates in the α-matrix were determined by fitting the experimental data to the classical nucleation theory.

Original languageEnglish
Title of host publicationMagnesium Technology 2013 - Held During the TMS 2013 Annual Meeting and Exhibition
EditorsNorbert Hort, Suveen Mathaudhu, Neale Neelameggham, Martyn Alderman
Number of pages4
PublisherThe Minerals, Metals & Materials Society
Publication date2013
Pages259-262
ISBN (print)978-1-118-60552-3, 978-3-319-48149-4
ISBN (electronic)978-3-319-48150-0
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event142nd Annual Meeting and Exhibition of the Magnesium Technology 2013 - TMS 2013 - San Antonio, TX, United States
Duration: 03.03.201307.03.2013
Conference number: 142
https://www.tms.org/meetings/annual-13/AM13news.aspx?id=4911

    Research areas

  • Mg-Al alloys, Nucleation kinetics, Precipitation
  • Engineering