Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys

Jon Mikel Sanchez; Iban Vicario; Joseba Albizuri; Teresa Guraya; Jose Carlos Garcia

doi:10.1016/j.jmrt.2018.06.010

Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys

Jon Mikel Sanchez, Iban Vicario, Joseba Albizuri, Teresa Guraya, Jose Carlos Garcia

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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.

Original language	English
Pages (from-to)	795-803
Number of pages	9
Journal	Journal of Materials Research and Technology
Volume	8
Issue number	1
DOIs	https://doi.org/10.1016/j.jmrt.2018.06.010
Publication status	Published - Jan 2019

Keywords

High entropy alloys
High hardness
Light-weight
Calphad
Microstructure
Phase composition
Complex Concentrated Alloys

Project and Funding Information

Funding Info
This work has been partially funded by the Basque government through the Project Elkartek: KK-2017/00007

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title = "Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys",

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.",

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",

author = "Sanchez, {Jon Mikel} and Iban Vicario and Joseba Albizuri and Teresa Guraya and Garcia, {Jose Carlos}",

note = "Publisher Copyright: {\textcopyright} 2018 Brazilian Metallurgical, Materials and Mining Association.",

year = "2019",

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doi = "10.1016/j.jmrt.2018.06.010",

language = "English",

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T1 - Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys

AU - Sanchez, Jon Mikel

AU - Vicario, Iban

AU - Albizuri, Joseba

AU - Guraya, Teresa

AU - Garcia, Jose Carlos

PY - 2019/1

Y1 - 2019/1

N2 - 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.

AB - 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.

KW - High entropy alloys

KW - High hardness

KW - Light-weight

KW - Calphad

KW - Microstructure

KW - Phase composition

KW - Complex Concentrated Alloys

KW - High entropy alloys

KW - High hardness

KW - Light-weight

KW - Calphad

KW - Microstructure

KW - Phase composition

KW - Complex Concentrated Alloys

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DO - 10.1016/j.jmrt.2018.06.010

M3 - Article

SN - 2238-7854

VL - 8

SP - 795

EP - 803

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

IS - 1

ER -

Phase prediction, microstructure and high hardness of novel light-weight high entropy alloys

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Keywords

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