Enhanced strength of (CoFeNiMn)<sub>100−x</sub>Cr<sub>x</sub> (x = 5, 20, 35 at.%) high entropy alloys via formation of carbide phases produced from industrial-grade raw materials-Reference-Cited by-同舟云学术

Enhanced strength of (CoFeNiMn)_100−xCr_x (x = 5, 20, 35 at.%) high entropy alloys via formation of carbide phases produced from industrial-grade raw materials

Published:2024-03-13 Issue:4 Volume:66 Page:503-512
ISSN:0025-5300
Container-title:Materials Testing
language:en
Short-container-title:

Author:

Polat Gökhan¹²^ORCID

Affiliation:

1. Metallurgical and Materials Engineering , İzmir Katip Çelebi University , İzmir , Çiğli , 35620 , Türkiye

2. Metallurgical and Materials Engineering , Necmettin Erbakan University , Meram , Konya , , Türkiye

Abstract

Abstract (CoFeNiMn)100−xCrx (x = 5, 20, 35 at.%) HEAs were produced using vacuum arc melting followed by suction casting using industrial-grade raw materials and subsequent annealing at 1150 °C for 24 h. The increasing Cr content triggered the formation of the Cr7C3 in the FCC matrix due to the presence of C impurity in the raw materials. The increasing Cr content from 5 to 35 at.% raised the hardness from 206 (±7) to 383 (±4) HV and yield strength from 210 to 350 MPa due to the embedded Cr7C3 phases in the matrix. The HEA consists of 20 at.% Cr was found to be the most promising alloy due to the strength-ductility trade-off with the values of 350 MPa compressive yield strength and 10.7 % strain. The enhanced mechanical properties of the HEAs by using industrial-grade low-cost raw materials could make them more attractive materials for industrial applications.

Funder

Scientific Research Projects Coordination Unit of Necmettin Erbakan University, Türkiye

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/mt-2023-0363/pdf

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