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      Effect of sensitization on tribological behavior of AISI 304 austenitic stainless steel

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          Abstract

          This paper aims to evaluate the dry sliding wear of AISI 304 austenitic stainless steel as a function of the applied load. Samples of AISI 304 were heat treated (sensitized) to precipitate Cr 23C 6 carbides in the grain boundaries, and the resulting microstructure was compared to that of the non-sensitized samples. Wear testing was carried out at room temperature of 25°C and a relative humidity of about 60% using a pin-on-disk apparatus. The load applied was varied from 10 to 30 N at a constant sliding velocity of 0.5 m s –1. Wear particles were analyzed by means of scanning electron microscopy and X-ray diffraction. The results showed that the dynamic friction coefficient remained effectively constant with increasing applied load. The surface hardness measured after the wear process generally increased at higher loads due to subsurface strain-hardening, and deformation-induced martensitic transformation occurred during the wear process. Surface roughness and weight losses were found to increase with increasing the load for both sensitized and non-sensitized samples. In addition, a great amount of Cr 23C 6 carbides in the grain boundaries favored a size reduction of the debris generated due to wear.

          Most cited references29

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          Stacking fault energies of seven commercial austenitic stainless steels

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            First-principles theory of atomic-scale friction.

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              Tribology: friction and wear of engineering materials

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                Author and article information

                Journal
                ijmr
                International Journal of Materials Research
                Carl Hanser Verlag
                1862-5282
                2195-8556
                13 March 2018
                : 109
                : 3
                : 234-240
                Affiliations
                a Materials Engineering, University of the Extreme South of Santa Catarina, Criciúma, SC, Brazil
                b Mechanical Engineering, UNISOCIESC, SOCIESC University Center, Joinville, SC, Brazil
                Author notes
                [* ] Correspondence address, Prof. Adriano Michael Bernardin, Dr. Eng., Materials Engineering University of the Extreme South of Santa Catarina, Av. Universitaria 1105, 88.806-000, Criciúma, SC, Brazil, Tel.: (+55)4834443735, Fax: (+55)4834312750, E-mail: amb@ 123456unesc.net , Web: www.unesc.net
                Article
                MK111594
                10.3139/146.111594
                5310157c-e30c-49fa-bded-9ba3eea60583
                © 2018, Carl Hanser Verlag, München
                History
                : 26 May 2017
                : 20 September 2017
                : 3 January 2018
                Page count
                References: 34, Pages: 7
                Categories
                Original Contributions

                Materials technology,Materials characterization,Materials science
                Austenitic stainless steel,AISI 304,Sliding wear,Sensitization

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