Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Rafael Menezes Nunes"'
Autor:
Rafael Eugenio dos Santos, Mariane Chludzinski, Rafael Menezes Nunes, Ricardo Reppold Marinho, Marcelo Torres Piza Paes, Afonso Reguly
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 6, p 200 (2023)
Repairing links of offshore mooring chains has presented a significant industry challenge, primarily arising from modifications in material properties, encompassing alterations in microstructure, hardness, and residual stress. In this context, the pr
Externí odkaz:
https://doaj.org/article/5f8215f6808f4f86bc2e693afca1d3d6
Autor:
Rafael Luciano Dalcin, Alexandre da Silva Rocha, Victor Velho de Castro, Julio Cesar Klein das Neves, Carlos Henrique da Silva, Ricardo Diego Torres, Rafael Menezes Nunes, Célia de Fraga Malfatti
Publikováno v:
Materials Research, Vol 25 (2021)
For the first time, the influence of gas mixture on first damage resistance of a plasma nitrided DIN 18MnCrSiMo6-4 bainitic steel was investigated. Samples were nitrided at 500 °C with three different N2-H2 gas mixtures, containing 5, 24, and 76 vol
Externí odkaz:
https://doaj.org/article/fc37904ed1594a629ecc9ae836bb73e9
Autor:
Guilherme Vieira Braga Lemos, Alexandre Bellegard Farina, Rafael Menezes Nunes, Pedro Henrique Costa Pereira da Cunha, Luciano Bergmann, Jorge Fernandez dos Santos, Afonso Reguly
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 3, Pp 2528-2537 (2019)
Alloy 625 (UNS N06625) welded sheets were evaluated in the present study. Friction stir welding (FSW) was performed in a range of tool rotational speed from 1200 to 200 rpm, welding speed from 1.0 to 1.5 mm/s and constant axial force. Residual stress
Externí odkaz:
https://doaj.org/article/402c9a9605014b5ba6e202b0cb3e652a
Autor:
Carlos Alexandre Pereira de Moraes, Mariane Chludzinski, Rafael Menezes Nunes, Guilherme Vieira Braga Lemos, Afonso Reguly
Publikováno v:
Journal of Materials Research and Technology, Vol 8, Iss 1, Pp 988-995 (2019)
The present study compared the residual stress states in friction welded pipes of API 5L X65 to those achieved by gas tungsten arc welding (GTAW). X-ray diffraction (XRD) was used to assess residual stresses. In addition, microstructural and microhar
Externí odkaz:
https://doaj.org/article/1a78b4646ed84d12bc9537cfc710715f
Autor:
Allan Romário de Paula Dias, Rafael Menezes Nunes, Toni Roger Schifelbain de Lima, Thomas Gabriel Rosauro Clarke
Publikováno v:
Materials Research, Vol 19, Iss 1, Pp 153-157 (2016)
The residual stress state of a mechanical component is an important factor in its production planning and in estimates of its lifecycle since it can be responsible for geometric distortions and degradation of fatigue properties. Therefore, the develo
Externí odkaz:
https://doaj.org/article/914218819c6e4ddf9c67712a24693cd3
Publikováno v:
Materials Research, Vol 21, Iss 2 (2017)
In this work, the corrosion resistance of Inconel 625 coatings applied to AISI 4140 steel plates was evaluated. Coatings were produced by High Velocity Oxygen Fuel (HVOF) by use of two different equipment which use either kerosene (liquid) or propane
Externí odkaz:
https://doaj.org/article/b0e84289f3f542d793e16049ec635ca1
Autor:
Guilherme Vieira Braga Lemos, Thomas Karl Hirsch, Alexandre da Silva Rocha, Rafael Menezes Nunes
Publikováno v:
Materials Research, Vol 17, Iss suppl 1, Pp 70-74 (2014)
Typically, for automotive shafts, shape distortion manifests itself in most cases after the induction hardening by an effect known as bending. The distortion results in a boost of costs, especially due to machining parts in the hardened state to fabr
Externí odkaz:
https://doaj.org/article/a6e7384bce93422cb73b328720a46286
Autor:
Tomaz Fantin de Souza, Carla Adriana Theis Soares, Juliana Zottis, Rafael Menezes Nunes, Alexandre da Silva Rocha, Thomas Hirsch
Publikováno v:
Materials Research, Vol 16, Iss 2, Pp 508-514 (2013)
In this work, a drawing processed was simulated to calculate forces and the resulting residual stresses in the material. The calculated residual stresses were compared with experimentally measured residual stresses by the Neutron Diffraction Method.
Externí odkaz:
https://doaj.org/article/3ec491e21cc14b93b92a9f6b54381982
Publikováno v:
Materials Research, Vol 15, Iss 2, Pp 266-276 (2012)
In this investigation a DoE (Design of Experiments) analysis of distortion for a typical manufacturing process of pre-straightened, cold drawn and induction hardened AISI 1045 cylindrical steel bars was carried out. A careful characterization of the
Externí odkaz:
https://doaj.org/article/53110cd1b75f4ecca228df2d490a62d5
Autor:
Alexandre da Silva Rocha, Guilherme Roberto dos Santos Biasibetti, Rafael Menezes Nunes, Guilherme Vieira Braga Lemos, Luiz Carlos de Cesaro Cavaler
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture. 235:1498-1506
The main objective of this work was to evaluate the influence of turning parameters on the generation of residual stresses in AISI 1045 steel bars. Therefore, effects of four main parameters as feed rate, cutting velocity, tool nose radius, and rake
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9678d42a11e9a43016c4f675f28c3f6e
https://doi.org/10.1177/0954405421990118
https://doi.org/10.1177/0954405421990118