Efeito do encruamento na cinética de nitretação dos aços inoxidáveis austeníticos

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dc.contributor.advisorVatavuk, Janpt_BR
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/2607688973456560por
dc.contributor.authorMartins, Eva Paganinipt_BR
dc.creator.Latteshttp://lattes.cnpq.br/2236250705764920por
dc.date.accessioned2016-03-15T19:37:01Z
dc.date.accessioned2020-05-28T18:07:33Z
dc.date.available2010-08-18pt_BR
dc.date.available2020-05-28T18:07:33Z
dc.date.issued2010-03-05pt_BR
dc.description.abstractThis paper deals with the effects of cold work on the nitriding kinetics and surface micro-hardness of the 3XX family of austenitic stainless steels. Nitriding is a thermo-chemical treatment based on the nitrogen diffusion and, under some specific circumstances, carbon in lower quantities, in to a ferrous matrix. The nitriding process improves particularly high cycle fatigue resistance, wear resistance, and corrosion resistance for carbon steels. To study the cold work effect on the material, samples of 304 and 316 were strained in tension tests to conventional deformation of 10%, 25% and up to rupture point prior to the nitriding process. A sample without deformation was kept for reference. It is possible to verify, based on the test performed, that the AISI 304 has smaller deformation capacity when compared to the 316 in terms of elongation on strain test presenting a higher degree of cold work deformation. Also the 304 presents a reduction on nitrided layer thickness and a smaller percentage of nitrogen in the nitrided layer after the cold work (difference of 1% point versus 0,5 for the 316) It is also possible to observe the smaller density on the 304 after the cold work which can be attributed, according to the literature, to the formation of cold work martensite during the cold work process.eng
dc.formatapplication/pdfpor
dc.identifier.urihttp://dspace.mackenzie.br/handle/10899/24210
dc.languageporpor
dc.publisherUniversidade Presbiteriana Mackenziepor
dc.rightsAcesso Abertopor
dc.subjectaço inoxidávelpor
dc.subjectaço inoxidável austeníticospor
dc.subjectnitretaçãopor
dc.subjectencruamentopor
dc.subjectstainless steeleng
dc.subjectaustenitic stainless steeleng
dc.subjectnitridingeng
dc.subjectcold workeng
dc.subject.cnpqCNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICApor
dc.thumbnail.urlhttp://tede.mackenzie.br/jspui/retrieve/3695/Eva%20Paganini%20Martins.pdf.jpg*
dc.titleEfeito do encruamento na cinética de nitretação dos aços inoxidáveis austeníticospor
dc.typeDissertaçãopor
local.contributor.board1Couto, Antonio Augustopt_BR
local.contributor.board1Latteshttp://lattes.cnpq.br/2893737202813850por
local.contributor.board2Lima, Nelson Batista dept_BR
local.contributor.board2Latteshttp://lattes.cnpq.br/6675251190520162por
local.publisher.countryBRpor
local.publisher.departmentEngenharia de Materiaispor
local.publisher.initialsUPMpor
local.publisher.programEngenharia de Materiaispor
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