Print Email Facebook Twitter Synergy of Sn micro-alloying and thermomechanical processing on formability and precipitation behavior of Al-Mg-Si-Cu-Zn alloys Title Synergy of Sn micro-alloying and thermomechanical processing on formability and precipitation behavior of Al-Mg-Si-Cu-Zn alloys Author Li, G. (TU Delft Team Maria Santofimia Navarro; University of Science and Technology Beijing) Guo, Mingxing (University of Science and Technology Beijing) Du, Jinqing (University of Science and Technology Beijing) Zhuang, Linzhong (University of Science and Technology Beijing) Date 2022 Abstract The effect of Sn micro-alloying on microstructure evolution, formability and precipitation behaviour of Al-Mg-Si-Cu-Zn alloys were systematically studied by experimental techniques and theoretical calculations. Results show that Sn addition can accelerate both the precipitation and re-dissolution of the Fe-rich phase during casting and homogenising treatments, which thereby determined the final microstructure. A significant retarding effect to natural ageing precipitation was observed with increasing Sn content in quenching samples, but this effect was weakened in pre-aged samples, as explained by DSC and simulations. The different number densities of the strengthening phase β″at the same artificial aging state are mainly attributed to the changed activation energy of the β″ phase affected by the formed Sn-containing Mg-Zn clusters and Mg-Si clusters. Trace Sn participating in the formation of GP zones, Sn-containing MgZn2 phase and new precipitating sequences during ageing were proposed for the first time. Subject Al-Mg-Si-Cu-Zn alloysGP zonesprecipitation kineticsSn micro-alloying To reference this document use: http://resolver.tudelft.nl/uuid:8484b68a-8392-4490-b983-c8097a71bf63 DOI https://doi.org/10.1080/14786435.2022.2154401 ISSN 1478-6435 Source Philosophical Magazine (London, 2003), 103 (2023) (5), 435-464 Part of collection Institutional Repository Document type journal article Rights © 2022 G. Li, Mingxing Guo, Jinqing Du, Linzhong Zhuang Files PDF Synergy_of_Sn_micro_alloy ... alloys.pdf 5.61 MB Close viewer /islandora/object/uuid:8484b68a-8392-4490-b983-c8097a71bf63/datastream/OBJ/view