Sanchez, Jon MikelPascual, AlejandroVicario, IbanAlbizuri, JosebaGuraya, TeresaGalarraga, Haize2021-12-01Sanchez , J M , Pascual , A , Vicario , I , Albizuri , J , Guraya , T & Galarraga , H 2021 , ' Microstructure and Phase Formation of Novel Al80Mg5Sn5Zn5X5 Light-Weight Complex Concentrated Aluminum Alloys ' , Metals , vol. 11 , no. 12 , 1944 , pp. 1944 . https://doi.org/10.3390/met111219442075-4701researchoutputwizard: 11556/1241Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.In this work, three novel complex concentrated aluminum alloys were developed. To investigate the unexplored region of the multicomponent phase diagrams, thermo-physical parameters and the CALPHAD method were used to understand the phase formation of the Al80Mg5Sn5Zn5Ni5 , Al80Mg5Sn5Zn5Mn5 , and Al80Mg5Sn5Zn5Ti5 alloys. The ingots of the alloys were manufactured by a gravity permanent mold casting process, avoiding the use of expensive, dangerous, or scarce alloying elements. The microstructural evolution as a function of the variable element (Ni, Mn, or Ti) was studied by means of different microstructural characterization techniques. The hardness and compressive strength of the as-cast alloys at room temperature were studied and correlated with the previously characterized microstructures. All the alloys showed multiphase microstructures with major α-Al dendritic matrix reinforced with secondary phases. In terms of mechanical properties, the developed alloys exhibited a high compression yield strength up to 420 MPa, high compression fracture strength up to 563 MPa, and elongation greater than 12%.17130326enginfo:eu-repo/semantics/openAccessjournal article10.3390/met11121944Complex-concentrated alloysAluminum alloysHigh-entropy alloysTheoretical modellingCALPHADMechanical propertiesLightweight alloyCastingComplex-concentrated alloysAluminum alloysHigh-entropy alloysTheoretical modellingCALPHADMechanical propertiesLightweight alloyCastingLightweight alloysTheoretical modelingGeneral Materials ScienceMetals and AlloysFunding InfoThis research was funded by the Basque Government through the projects Elkartek:_x000D_ KK-2018/00015 (NEWHEA2) and KK-2020/00047 (CEMAP).This research was funded by the Basque Government through the projects Elkartek:_x000D_ KK-2018/00015 (NEWHEA2) and KK-2020/00047 (CEMAP).http://www.scopus.com/inward/record.url?scp=85120325627&partnerID=8YFLogxK