Sanchez, Jon MikelVicario, IbanAlbizuri, JosebaGuraya, TeresaGarcia, Jose Carlos2019-01Sanchez , J M , Vicario , I , Albizuri , J , Guraya , T & Garcia , J C 2019 , ' Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys ' , Journal of Materials Research and Technology , vol. 8 , no. 1 , pp. 795-803 . https://doi.org/10.1016/j.jmrt.2018.06.0102238-7854researchoutputwizard: 11556/595Publisher Copyright: © 2018 Brazilian Metallurgical, Materials and Mining Association.Guided by CALPHAD modeling, low-density and multiphase three novel High Entropy Alloys (HEAs), Al40Cu15Cr15Fe15Si15, Al65Cu5Cr5Si15Mn5Ti5 and Al60Cu10Fe10Cr5Mn5Ni5Mg5 were produced by large scale vacuum die casting. A mixture of simple and complex phases was observed in the as-cast microstructures, which demonstrates good agreement with CALPHAD results. The measured densities varied from 3.7 g/cm3 to 4.6 g/cm3 and microhardness from 743 Hv to 916 Hv. Finally, the hardness of all the light-weight HEAs (LWHEAs) with densities below 4.6 g/cm3 manufactured to date were reviewed. The hardness of Al40Cu15Cr15Fe15Si15 and hardness to density ratio of Al65Cu5Cr5Si15Mn5Ti5 are the highest of all LWHEAs reported up to date.9646953enginfo:eu-repo/semantics/openAccessjournal article10.1016/j.jmrt.2018.06.010High entropy alloysHigh hardnessLight-weightCalphadMicrostructurePhase compositionComplex Concentrated AlloysHigh entropy alloysHigh hardnessLight-weightCalphadMicrostructurePhase compositionComplex Concentrated AlloysCeramics and CompositesBiomaterialsSurfaces, Coatings and FilmsMetals and AlloysFunding InfoThis work has been partially funded by the Basque government through the Project Elkartek: KK-2017/00007This work has been partially funded by the Basque government through the Project Elkartek: KK-2017/00007http://www.scopus.com/inward/record.url?scp=85050337199&partnerID=8YFLogxK