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The Influence of Chromium Content on the Structural and Mechanical Properties of AlCr_xFeCoNi High Entropy Alloys

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Abstract:

Many high entropy alloy systems have been exploited in the past decade and among them AlCrFeCoNi alloy is widely studied. The structural and mechanical properties of AlCr_xFeCoNi alloy was studied in this paper for different content of chromium (atomic ratio, x= 0.2 to 2.0 at. %). In this study, ten samples having different chemical composition were prepared from raw materials using RAV equipment, type MRF ABJ 900. The microstructure features, crystallite sizes and microhardness depends on chemical composition of the alloy. The microhardness values for AlCr_xFeCoNi (x = 0.2 to 2 at. %) increases from 389.6 to 562.6 HV_0.1. The maximum value of microhardness for the high entropy alloy AlCr_xFeCoNi (x = 1), has been obtained for 20.55 wt% Cr and has the value 562.6 HV_0.1.

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High-Entropy Alloys

International Journal of Engineering Research in Africa Vol. 37

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Periodical:

International Journal of Engineering Research in Africa (Volume 37)

Pages:

23-28

DOI:

https://doi.org/10.4028/www.scientific.net/JERA.37.23

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Online since:

August 2018

Authors:

Victor Geantă*, Ionelia Voiculescu, Bogdan Istrate, Maria-Diana Vrânceanu, Robert Ciocoiu, Cosmin Mihai Cotruț

Keywords:

Chromium Behavior, High Entropy Alloys, Microhardness, Microstructure

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* - Corresponding Author

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