Influence of Plastic Deformation on Low Temperature Surface Hardening of Austenitic Stainless Steel by Gaseous Nitriding

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Abstract

This article addresses an investigation of the influence of plastic deformation on low temperature surface hardening by gaseous nitriding of two commercial austenitic stainless steels: AISI 304 and EN 1.4369.
The materials were plastically deformed to different equivalent strains by uniaxial tension. Gaseous nitriding of the strained material was performed in ammonia gas at atmospheric pressure at 703 K. Microstructural characterization of the as-deformed states and the nitrided case produced included X-ray diffraction analysis, reflected light microscopy, microhardness testing. The results demonstrate that a case of expanded austenite develops and that, in particular, strain-induced martensite has a large influence on the nitrided zone.
Original languageEnglish
Title of host publicationSurface Modification Technologies XXVIII. Proceedings of the Twenty Eighth International Conference on Surface Modification Technologies
EditorsT.S. Sudarshan, P. Vuoristo, H. Koivuluoto
PublisherVALARDOCS
Publication date2015
Pages211-222
ISBN (Print)978-81-926196-1-3
Publication statusPublished - 2015
Event28th International Conference on Surface Modification Technologies - Tampere University of Technology, Tampere, Finland
Duration: 16 Jun 201418 Jun 2014
Conference number: 28
http://www.tut.fi/en/international-conference-on-surface-modification-technologies/index.htm

Conference

Conference28th International Conference on Surface Modification Technologies
Number28
LocationTampere University of Technology
CountryFinland
CityTampere
Period16/06/201418/06/2014
Internet address

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