- Journal Article
Rights / licenseCreative Commons Attribution 4.0 International
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. Show more
Journal / seriesMaterials
Pages / Article No.
SubjectAl–Mg–Si alloy; Zn; Sn; Paint bake; Al–Mg–Si–Zn–Sn alloys; Cluster formation; Hardening behavior
Organisational unit03661 - Löffler, Jörg F. / Löffler, Jörg F.
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