Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | https://repositorio.unifesp.br/handle/11600/55286 http://dx.doi.org/10.1590/1980-5373-MR-2016-0744 |
Resumo: | Plasma nitriding of a solution annealed and aged 300 grade maraging steel was studied aiming to increase the creep resistance. The surface microhardness reached 1,140 HV, producing 50 mu m layer composed of epsilon-Fe-3 N and gamma'-N-Fe-4 N nitrides at the uppermost sample layer. The inner core remained unaltered presenting typical plate-like martensite microstructure of maraging steels with average microhardness of 604 HV. Surface RMS roughness in the nanometric scale increase from 52 nm to 71 nm. The continuous layer of iron nitrides seems to behave as a barrier for oxidation and for inward oxygen diffusion improving the creep resistance by reducing the steady-state creep rate (epsilon(s)) in 52-65% when compared with the literature results. Dominant creep mechanism is controlled by dislocations climb. Fracture surfaces of specimens presented ductile failure consisting of equiaxed and bi-modal dimples in the fibrous zone surrounded by 45 degrees shear lip. Nitrided sample presented a reduced ductility, associated to the hard surface layer. |
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dos Reis, Adriano GoncalvesPereira Reis, Danieli Aparecida [UNIFESP]Abdalla, Antonio JorgeCouto, Antonio AugustoOtubo, Jorge [UNIFESP]2020-07-17T14:03:17Z2020-07-17T14:03:17Z2017Materials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 20, p. 2-9, 2017.1516-1439https://repositorio.unifesp.br/handle/11600/55286http://dx.doi.org/10.1590/1980-5373-MR-2016-0744S1516-14392017000800002.pdfS1516-1439201700080000210.1590/1980-5373-MR-2016-0744WOS:000430187600002Plasma nitriding of a solution annealed and aged 300 grade maraging steel was studied aiming to increase the creep resistance. The surface microhardness reached 1,140 HV, producing 50 mu m layer composed of epsilon-Fe-3 N and gamma'-N-Fe-4 N nitrides at the uppermost sample layer. The inner core remained unaltered presenting typical plate-like martensite microstructure of maraging steels with average microhardness of 604 HV. Surface RMS roughness in the nanometric scale increase from 52 nm to 71 nm. The continuous layer of iron nitrides seems to behave as a barrier for oxidation and for inward oxygen diffusion improving the creep resistance by reducing the steady-state creep rate (epsilon(s)) in 52-65% when compared with the literature results. Dominant creep mechanism is controlled by dislocations climb. Fracture surfaces of specimens presented ductile failure consisting of equiaxed and bi-modal dimples in the fibrous zone surrounded by 45 degrees shear lip. Nitrided sample presented a reduced ductility, associated to the hard surface layer.CNPqCAPESLCS/LNNano/CNPEM (AFM)FAPESPFINEP-PROINFRAUniv Estadual Paulista Unesp, Inst Ciencia & Tecnol, Sao Jose Dos Campos, SP, BrazilIPEN, Sao Paulo, SP, BrazilUniv Fed Sao Paulo UNIFESP, Inst Ciencia & Tecnol, Sao Jose Dos Campos, SP, BrazilITA, Sao Jose Dos Campos, SP, BrazilIEAv, Sao Jose Dos Campos, SP, BrazilUPM, Sao Paulo, SP, BrazilUniv Fed Sao Paulo UNIFESP, Inst Ciencia & Tecnol, Sao Jose Dos Campos, SP, BrazilCNPq: 141274/2013-1CNPq: 403070/2016-3CAPES: 014/08Web of Science2-9engUniv Fed Sao Carlos, Dept Engenharia MaterialsMaterials Research-Ibero-American Journal Of Materialsmaragingcreepplasma nitridingfractureShort-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitridedinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSao Carlos20info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALS1516-14392017000800002.pdfapplication/pdf6582373${dspace.ui.url}/bitstream/11600/55286/1/S1516-14392017000800002.pdf4ced8ee08b9b32de6a31ddc496d60ea1MD51open accessTEXTS1516-14392017000800002.pdf.txtS1516-14392017000800002.pdf.txtExtracted texttext/plain27084${dspace.ui.url}/bitstream/11600/55286/8/S1516-14392017000800002.pdf.txt251a4b34dc4465dca89ea7830d08ca6eMD58open accessTHUMBNAILS1516-14392017000800002.pdf.jpgS1516-14392017000800002.pdf.jpgIM Thumbnailimage/jpeg6656${dspace.ui.url}/bitstream/11600/55286/10/S1516-14392017000800002.pdf.jpg86b8cf0c04709b732f7478643485d7a6MD510open access11600/552862023-06-05 19:07:10.044open accessoai:repositorio.unifesp.br:11600/55286Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-06-05T22:07:10Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided |
title |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided |
spellingShingle |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided dos Reis, Adriano Goncalves maraging creep plasma nitriding fracture |
title_short |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided |
title_full |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided |
title_fullStr |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided |
title_full_unstemmed |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided |
title_sort |
Short-term Creep Properties and Fracture Surface of 18 Ni (300) Maraging Steel Plasma Nitrided |
author |
dos Reis, Adriano Goncalves |
author_facet |
dos Reis, Adriano Goncalves Pereira Reis, Danieli Aparecida [UNIFESP] Abdalla, Antonio Jorge Couto, Antonio Augusto Otubo, Jorge [UNIFESP] |
author_role |
author |
author2 |
Pereira Reis, Danieli Aparecida [UNIFESP] Abdalla, Antonio Jorge Couto, Antonio Augusto Otubo, Jorge [UNIFESP] |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
dos Reis, Adriano Goncalves Pereira Reis, Danieli Aparecida [UNIFESP] Abdalla, Antonio Jorge Couto, Antonio Augusto Otubo, Jorge [UNIFESP] |
dc.subject.eng.fl_str_mv |
maraging creep plasma nitriding fracture |
topic |
maraging creep plasma nitriding fracture |
description |
Plasma nitriding of a solution annealed and aged 300 grade maraging steel was studied aiming to increase the creep resistance. The surface microhardness reached 1,140 HV, producing 50 mu m layer composed of epsilon-Fe-3 N and gamma'-N-Fe-4 N nitrides at the uppermost sample layer. The inner core remained unaltered presenting typical plate-like martensite microstructure of maraging steels with average microhardness of 604 HV. Surface RMS roughness in the nanometric scale increase from 52 nm to 71 nm. The continuous layer of iron nitrides seems to behave as a barrier for oxidation and for inward oxygen diffusion improving the creep resistance by reducing the steady-state creep rate (epsilon(s)) in 52-65% when compared with the literature results. Dominant creep mechanism is controlled by dislocations climb. Fracture surfaces of specimens presented ductile failure consisting of equiaxed and bi-modal dimples in the fibrous zone surrounded by 45 degrees shear lip. Nitrided sample presented a reduced ductility, associated to the hard surface layer. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017 |
dc.date.accessioned.fl_str_mv |
2020-07-17T14:03:17Z |
dc.date.available.fl_str_mv |
2020-07-17T14:03:17Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Materials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 20, p. 2-9, 2017. |
dc.identifier.uri.fl_str_mv |
https://repositorio.unifesp.br/handle/11600/55286 http://dx.doi.org/10.1590/1980-5373-MR-2016-0744 |
dc.identifier.issn.none.fl_str_mv |
1516-1439 |
dc.identifier.file.none.fl_str_mv |
S1516-14392017000800002.pdf |
dc.identifier.scielo.none.fl_str_mv |
S1516-14392017000800002 |
dc.identifier.doi.none.fl_str_mv |
10.1590/1980-5373-MR-2016-0744 |
dc.identifier.wos.none.fl_str_mv |
WOS:000430187600002 |
identifier_str_mv |
Materials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 20, p. 2-9, 2017. 1516-1439 S1516-14392017000800002.pdf S1516-14392017000800002 10.1590/1980-5373-MR-2016-0744 WOS:000430187600002 |
url |
https://repositorio.unifesp.br/handle/11600/55286 http://dx.doi.org/10.1590/1980-5373-MR-2016-0744 |
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eng |
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Materials Research-Ibero-American Journal Of Materials |
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openAccess |
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2-9 |
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Sao Carlos |
dc.publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
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