Revealing the heterogeneous nucleation mechanism of Mg17Al12 on impurity Mg2Si particles in commercial AZ31 alloy

• Published in: Journal of magnesium and alloys Vol. 13; no. 7; pp. 3122 - 3133
• Main Authors: Mo, Liling, Liao, Hengbin, Chen, Linbo, Zhao, Yu-Jun, Du, Jun
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2025; KeAi Communications Co., Ltd
• Subjects: AZ31 alloy; First-principles calculation; Heterogeneous nucleation; Mg17Al12 phase; Mg2Si particle; Heterogeneous nucleation; First-principles calculation; Mg17Al12 phase; AZ31 alloy; Mg2Si particle

•Si impurities in the AZ31 alloy form fine Mg2Si particles in the central region of the Mg17Al12 phase.•Mg2Si particles precipitate before Mg17Al12, acting as nucleation sites for Mg17Al12 during the solidification process of the AZ31 alloy.•E2EM calculations and TEM analysis show a low misfit of 0....