Journal
SCRIPTA MATERIALIA
Volume 215, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2022.114701
Keywords
aluminum alloys; iron-rich intermetallic phases; grain refining; heterostructures; particle stimulated nucleation (PSN)
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This study investigates the effect of a high volume fraction of Fe-rich intermetallic phases on microstructure evolution and mechanical properties in a cold rolled Al-Mg-Si wrought alloy. The results show that the alloy with almost 10 vol-% Fe-rich intermetallic phase exhibits an unusually attractive combination of strength and ductility, in addition to a substantially increased strain hardening typical of hetero-structured materials, and can facilitate a higher usage of scrap input.
This study investigates the effect of a high volume fraction of Fe-rich intermetallic phases on microstructure evolution and mechanical properties in a cold rolled Al-Mg-Si wrought alloy. A conventional Al-Mg-Si alloy was modified by significantly increasing its Fe and Mn content, while the Si content was adjusted to keep the matrix composition comparable. Subsequent fast solidification and thermomechanical processing generated a dense distribution of fine intermetallic phases, which culminated in significant grain-refinement and uniform texture. The resulting alloy, with almost 10 vol-% Fe-rich intermetallic phase, features an unusually attractive combi-nation of strength and ductility in addition to the substantially increased strain hardening typical of hetero-structured materials, and can facilitate a higher usage of scrap input.
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