Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding

Medium/high entropy alloys have some excellent properties, such as high strength, high plasticity, high toughness, high wear resistance, etc., which are better than those of traditional metal alloys. The mechanical properties of medium/high entropy alloys have always been the focus of academic resea...

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Autores principales:	Siyuan Zhang, Yanwei Liu
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/e3bb2c899e764acaa88229143ebb8c78
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spelling	oai:doaj.org-article:e3bb2c899e764acaa88229143ebb8c782021-12-01T18:52:06ZExperimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding2158-322610.1063/5.0064532https://doaj.org/article/e3bb2c899e764acaa88229143ebb8c782021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0064532https://doaj.org/toc/2158-3226Medium/high entropy alloys have some excellent properties, such as high strength, high plasticity, high toughness, high wear resistance, etc., which are better than those of traditional metal alloys. The mechanical properties of medium/high entropy alloys have always been the focus of academic research, but research on their interface mechanical behaviors is still missing. In this paper, we have designed a fretting friction and wear testing system, whose accuracy has been verified. A series of friction experiments have been carried out on the medium entropy alloy–steel friction pair. The friction responses have been investigated, and the factors affecting the friction coefficient have been revealed. Results show that the friction coefficient increases with the increase in the maximum horizontal displacement and decreases with the increase in the normal pressure. The sliding velocity and the normal load together affect the friction coefficient between the friction pairs. Compared with the commonly used titanium alloy and nickel alloy, the friction coefficient between the medium entropy alloy–steel friction pair is smaller during the fretting cycle process. Despite the experimental results, a theoretical model is also proposed to qualitatively explain the corresponding experimental phenomena. Our research sheds light on revealing the interfacial mechanical properties of the medium entropy alloy and provides a basis for tribological design and its internal mechanism.Siyuan ZhangYanwei LiuAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115218-115218-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Siyuan Zhang Yanwei Liu Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding
description	Medium/high entropy alloys have some excellent properties, such as high strength, high plasticity, high toughness, high wear resistance, etc., which are better than those of traditional metal alloys. The mechanical properties of medium/high entropy alloys have always been the focus of academic research, but research on their interface mechanical behaviors is still missing. In this paper, we have designed a fretting friction and wear testing system, whose accuracy has been verified. A series of friction experiments have been carried out on the medium entropy alloy–steel friction pair. The friction responses have been investigated, and the factors affecting the friction coefficient have been revealed. Results show that the friction coefficient increases with the increase in the maximum horizontal displacement and decreases with the increase in the normal pressure. The sliding velocity and the normal load together affect the friction coefficient between the friction pairs. Compared with the commonly used titanium alloy and nickel alloy, the friction coefficient between the medium entropy alloy–steel friction pair is smaller during the fretting cycle process. Despite the experimental results, a theoretical model is also proposed to qualitatively explain the corresponding experimental phenomena. Our research sheds light on revealing the interfacial mechanical properties of the medium entropy alloy and provides a basis for tribological design and its internal mechanism.
format	article
author	Siyuan Zhang Yanwei Liu
author_facet	Siyuan Zhang Yanwei Liu
author_sort	Siyuan Zhang
title	Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding
title_short	Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding
title_full	Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding
title_fullStr	Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding
title_full_unstemmed	Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding
title_sort	experimental investigation of friction behaviors for crconi medium entropy alloy in reciprocating sliding
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/e3bb2c899e764acaa88229143ebb8c78
work_keys_str_mv	AT siyuanzhang experimentalinvestigationoffrictionbehaviorsforcrconimediumentropyalloyinreciprocatingsliding AT yanweiliu experimentalinvestigationoffrictionbehaviorsforcrconimediumentropyalloyinreciprocatingsliding
_version_	1718404662214787072

Experimental investigation of friction behaviors for CrCoNi medium entropy alloy in reciprocating sliding

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