Residual stress-affected diffusion during plasma nitriding of tool steels
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/217281 |
Resumo: | Plasma nitriding of tool materials is common practice to improve the wear resistance and lifetime of tools. Machining-induced compressive residual stresses in shallow layers of some tenths of microns are observed accompanied by other characteristic properties of machined surfaces in these high-strength materials. After plasma nitriding of M2 high-speed steel, previously induced compressive residual stresses remain stable and the depth of diffusion layers decreases with increasing compressive residual stresses. This article reports investigations of plasma nitrided samples with different levels of residual stresses induced prior to the nitriding process. For comparison, experiments with bending load stresses during plasma nitriding have also been carried out. The plasma nitriding treatment was performed at constant temperature of 500 °C with a gas mixture of 5 vol pct N2 in hydrogen. Nitriding time was varied from 30 to 120 minutes. All samples were characterized before and after plasma nitriding concerning microstructure, roughness, microhardness, chemical composition, and residual stress states. Experimental results are compared with analytical calculations on (residual) stress effects in diffusion and show a clear effect of residual and load stresses in the diffusion of nitrogen in a high-strength M2 tool steel. |
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Ramos, Fabiano DornellesStrohaecker, Telmo RobertoRocha, Alexandre da SilvaHirsch, Thomas2021-01-14T04:10:21Z20041073-5623http://hdl.handle.net/10183/217281000558167Plasma nitriding of tool materials is common practice to improve the wear resistance and lifetime of tools. Machining-induced compressive residual stresses in shallow layers of some tenths of microns are observed accompanied by other characteristic properties of machined surfaces in these high-strength materials. After plasma nitriding of M2 high-speed steel, previously induced compressive residual stresses remain stable and the depth of diffusion layers decreases with increasing compressive residual stresses. This article reports investigations of plasma nitrided samples with different levels of residual stresses induced prior to the nitriding process. For comparison, experiments with bending load stresses during plasma nitriding have also been carried out. The plasma nitriding treatment was performed at constant temperature of 500 °C with a gas mixture of 5 vol pct N2 in hydrogen. Nitriding time was varied from 30 to 120 minutes. All samples were characterized before and after plasma nitriding concerning microstructure, roughness, microhardness, chemical composition, and residual stress states. Experimental results are compared with analytical calculations on (residual) stress effects in diffusion and show a clear effect of residual and load stresses in the diffusion of nitrogen in a high-strength M2 tool steel.application/pdfengMetallurgical and materials transactions a : physical metallurgy and materials science. [Warrendale]. Vol. 35, no. 11 (Nov. 2004), p. 3523-3530Nitretação a plasmaResidual stress-affected diffusion during plasma nitriding of tool steelsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT000558167.pdf.txt000558167.pdf.txtExtracted Texttext/plain35975http://www.lume.ufrgs.br/bitstream/10183/217281/2/000558167.pdf.txt85ad793ece7a8ab9effe86db3ac2185bMD52ORIGINAL000558167.pdfTexto completo (inglês)application/pdf445679http://www.lume.ufrgs.br/bitstream/10183/217281/1/000558167.pdfc6774a06bfe720cf437fc1a76994e560MD5110183/2172812021-03-09 04:28:35.776618oai:www.lume.ufrgs.br:10183/217281Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-03-09T07:28:35Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Residual stress-affected diffusion during plasma nitriding of tool steels |
title |
Residual stress-affected diffusion during plasma nitriding of tool steels |
spellingShingle |
Residual stress-affected diffusion during plasma nitriding of tool steels Ramos, Fabiano Dornelles Nitretação a plasma |
title_short |
Residual stress-affected diffusion during plasma nitriding of tool steels |
title_full |
Residual stress-affected diffusion during plasma nitriding of tool steels |
title_fullStr |
Residual stress-affected diffusion during plasma nitriding of tool steels |
title_full_unstemmed |
Residual stress-affected diffusion during plasma nitriding of tool steels |
title_sort |
Residual stress-affected diffusion during plasma nitriding of tool steels |
author |
Ramos, Fabiano Dornelles |
author_facet |
Ramos, Fabiano Dornelles Strohaecker, Telmo Roberto Rocha, Alexandre da Silva Hirsch, Thomas |
author_role |
author |
author2 |
Strohaecker, Telmo Roberto Rocha, Alexandre da Silva Hirsch, Thomas |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Ramos, Fabiano Dornelles Strohaecker, Telmo Roberto Rocha, Alexandre da Silva Hirsch, Thomas |
dc.subject.por.fl_str_mv |
Nitretação a plasma |
topic |
Nitretação a plasma |
description |
Plasma nitriding of tool materials is common practice to improve the wear resistance and lifetime of tools. Machining-induced compressive residual stresses in shallow layers of some tenths of microns are observed accompanied by other characteristic properties of machined surfaces in these high-strength materials. After plasma nitriding of M2 high-speed steel, previously induced compressive residual stresses remain stable and the depth of diffusion layers decreases with increasing compressive residual stresses. This article reports investigations of plasma nitrided samples with different levels of residual stresses induced prior to the nitriding process. For comparison, experiments with bending load stresses during plasma nitriding have also been carried out. The plasma nitriding treatment was performed at constant temperature of 500 °C with a gas mixture of 5 vol pct N2 in hydrogen. Nitriding time was varied from 30 to 120 minutes. All samples were characterized before and after plasma nitriding concerning microstructure, roughness, microhardness, chemical composition, and residual stress states. Experimental results are compared with analytical calculations on (residual) stress effects in diffusion and show a clear effect of residual and load stresses in the diffusion of nitrogen in a high-strength M2 tool steel. |
publishDate |
2004 |
dc.date.issued.fl_str_mv |
2004 |
dc.date.accessioned.fl_str_mv |
2021-01-14T04:10:21Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/217281 |
dc.identifier.issn.pt_BR.fl_str_mv |
1073-5623 |
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000558167 |
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1073-5623 000558167 |
url |
http://hdl.handle.net/10183/217281 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Metallurgical and materials transactions a : physical metallurgy and materials science. [Warrendale]. Vol. 35, no. 11 (Nov. 2004), p. 3523-3530 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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