Influence of Zn and Sn on the precipitation behavior of new Al-Mg-Si alloys

Journal article

Publication Details

Author(s): Glöckel F, Uggowitzer PJ, Felfer P, Pogatscher S, Höppel HW
Journal: Materials
Publication year: 2019
Volume: 12
Journal issue: 16
ISSN: 1996-1944


In this study, we demonstrate how Zn and Sn influence hardening behavior and cluster formation during pre-aging and paint bake treatment in Al-Mg-Si alloys via hardness tests, tensile tests, and atom probe tomography. Compared to the standard alloy, the Sn-modified variant shows reduced cluster size and yield strength in the pre-aged condition. During the paint bake cycle, the clusters start to grow very fast and the alloy exhibits the highest strength increment. This behavior is attributed to the high vacancy binding energy of Sn. Adding Zn increases the formation kinetics and the size of Mg-Si co-clusters, generating higher yield strength values for both the pre-aged and paint baked conditions. Simultaneous addition of Zn and Sn creates a synergistic effect and produces an alloy that exhibits moderate strength (and good formability) in the pre-aged condition and accelerated hardening behavior during the paint bake cycle.

FAU Authors / FAU Editors

Felfer, Peter Prof. Dr.
Juniorprofessor für Werkstoffwissenschaften (3D-Nanoanalytik und Atomsondenmikroskopie)
Glöckel, Felix
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Höppel, Heinz Werner PD Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)

External institutions with authors

Eidgenössische Technische Hochschule Zürich (ETHZ) / Swiss Federal Institute of Technology in Zurich
Montanuniversität Leoben

How to cite

Glöckel, F., Uggowitzer, P.J., Felfer, P., Pogatscher, S., & Höppel, H.W. (2019). Influence of Zn and Sn on the precipitation behavior of new Al-Mg-Si alloys. Materials, 12(16).

Glöckel, Felix, et al. "Influence of Zn and Sn on the precipitation behavior of new Al-Mg-Si alloys." Materials 12.16 (2019).


Last updated on 2019-20-08 at 16:23