Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys
Loading...
Identifiers
Publication date
2019-01
Advisors
Journal Title
Journal ISSN
Volume Title
Publisher
Citations
Export
Abstract
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.
Description
Publisher Copyright: © 2018 Brazilian Metallurgical, Materials and Mining Association.
Keywords
High entropy alloys , High hardness , Light-weight , Calphad , Microstructure , Phase composition , Complex Concentrated Alloys , High entropy alloys , High hardness , Light-weight , Calphad , Microstructure , Phase composition , Complex Concentrated Alloys , Ceramics and Composites , Biomaterials , Surfaces, Coatings and Films , Metals and Alloys , Funding Info , This work has been partially funded by the Basque government through the Project Elkartek: KK-2017/00007 , This work has been partially funded by the Basque government through the Project Elkartek: KK-2017/00007
Type
Citation
Sanchez , 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.2018.06.010