Effect of grain size on machining strength in an austenitic stainless steel

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dc.contributor.authorCOPPINI, N. L.
dc.contributor.authorJúlio Cesar Dutra
dc.contributor.authorBAPTISTA, E. A.
dc.contributor.authorFRIACA, C. A.
dc.contributor.authorFERREIRA, F. A. A.
dc.contributor.authorOrcidhttps://orcid.org/0000-0002-8809-9417
dc.date.accessioned2023-08-26T23:49:46Z
dc.date.available2023-08-26T23:49:46Z
dc.date.issued2010-07-26
dc.description.abstractThis paper explores the effect of grain size on machining strength in an Fe-Cr-Ni alloy, namely AISI 316L. Ideal grain growth law, proposed by Burke,[1] was used to obtain the activation energy for this steel based on data published by Stanley and Perrota,[2] which was 185 kJ.mol-1. The initial grain size was measured - 12 0m - And by considering these values, both temperature and time values needed to achieve a final grain size ten times larger than the initial one could be calculated, which were 1200°C and 2 hours. Ternary phase diagram analysis showed that austenite was stable at this temperature. Following, samples of 200-mm length were annealed and quenched in water to prevent any formation of sigma (0) phase. Annealed and as-received bars were then used to compare their machining strength. Results showed that the machining strength is higher in the as received condition than the one after annealing (127 0m). It may be concluded that the bigger the grain size, the lower its machining strength. It is believed that this is caused by the pile-up of dislocations on grain boundaries, since this material exhibits large plastic deformation before fracture.
dc.description.firstpage4795
dc.description.lastpage4803
dc.description.volume6
dc.identifier.citationCOPPINI, N. L.; DUTRA, J. C.; BAPTISTA, E. A.; FRIACA, C. A.; FERREIRA, F. A. A. Effect of grain size on machining strength in an austenitic stainless steel. 65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010. p. 4795-4803, jul. 2010.
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4994
dc.relation.ispartof65th ABM International Congress, 18th IFHTSE Congress and 1st TMS/ABM International Materials Congress 2010
dc.rightsAcesso Restrito
dc.subject.otherlanguageMachinability
dc.subject.otherlanguageMachining strength
dc.subject.otherlanguageNormal grain growth
dc.titleEffect of grain size on machining strength in an austenitic stainless steel
dc.typeArtigo de evento
fei.scopus.citations0
fei.scopus.eid2-s2.0-84893216179
fei.scopus.subjectAisi 316l
fei.scopus.subjectFe-Cr-Ni alloys
fei.scopus.subjectGrain size
fei.scopus.subjectInitial grain size
fei.scopus.subjectLarge plastic deformation
fei.scopus.subjectNormal grain growth
fei.scopus.subjectTernary phase diagrams
fei.scopus.subjectTime values
fei.scopus.updated2024-05-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84893216179&origin=inward
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