Kaya, HasanBuyuk, UgurCadirli, EminSahin, MevlutGunduz, Mehmet2024-11-072024-11-0720221059-94951544-1024https://doi.org/10.1007/s11665-021-06298-8https://hdl.handle.net/11480/15377The 7020 aluminum alloy is one of the hardenable Al-Zn-Mg based alloys, which are a family of high strength aluminum alloys. These 7020 alloys are commonly used in the aircraft and automotive industries. The microstructural changes have a significant impact on the mechanical properties of binary and multi-component alloys. For this reason, 7020 aluminum alloys were prepared with different growth rates on account of the changes in the microstructures; thus, directionally solidification processes were actualized with a Bridgman furnace at five various growth rates (V = 8.3-166.0 mu m/s) and at constant temperature gradient (G = 8.3 K/mm). Microhardness (HV), ultimate tensile strength (sigma(U)) and yield strength (sigma(y)) of the solidified alloys were determined. The HV increased from 758.8 to 917.1 N/mm(2), the sigma(U) from 125.4 to 208.1 N/mm(2) and the sigma(y) from 133.7 to 230.8 N/mm(2) with an increase in growth rate from 8.3 to 166.0 mu m/s.eninfo:eu-repo/semantics/closedAccess7020 alloycompressive yield strengthdendritic spacingsfracture surface analysismicrohardnessultimate tensile strengthArticle3121622163010.1007/s11665-021-06298-82-s2.0-85117932247Q2WOS:000710884200007Q4