Analysis of the evolution of Mg2Si precipitates during continuous cooling and subsequent re-heating of a 6061 aluminum alloy with differential scanning calorimetry and a simple model

Georg Falkinger*, Christian Reisecker, Stefan Mitsche

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In Al-Mg-Si alloys the presence of β-Mg2Si precipitates crucially affects strength and recrystallization during hot deformation and annealing. This work contributes to the understanding of the evolution of β-Mg2Si precipitates throughout a typical production process by investigating a continuous cooling and re-heating sequence with differential scanning calorimetry at varying rates. A simple model for nucleation and growth with improved numerical properties is presented and validated with the help of the calorimetric curves. The model, which is designed for future implementation in a finite element software, is shown to be very suitable for predicting the phase formation during cooling but limited for predicting the phase dissolution during re-heating.

Original languageEnglish
Pages (from-to)316-326
Number of pages11
JournalInternational Journal of Materials Research
Volume113
Issue number4
DOIs
Publication statusPublished - Apr 2022

Keywords

  • Al-Mg-Si alloy
  • Calorimetry
  • Hot rolling
  • Integrated material model

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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