Navegação Engenharias por Autor "Lemos, Guilherme Vieira Braga"

Resultados 1-11 de 11

    • Avaliação das tensões residuais em juntas soldadas de inconel 625 obtidas através da soldagem por fricção e mistura mecânica 

      Lemos, Guilherme Vieira Braga; Nunes, Rafael Menezes; Doll, Philipp Luca; Bergmann, Luciano Andrei; Strohaecker, Telmo Roberto; Santos, Jorge Fernandez dos (2017) [Artigo de periódico]
      A utilização de materiais nobres é requisito básico em aplicações onde existe um ambiente agressivo como na indústria do petróleo e nuclear. Neste panorama, a liga Inconel 625 é frequentemente utilizada como material de ...

    • Caracterização de uma junta soldada de INCONEL 625 obtida pelo processo friction stir welding 

      Martinazzi, Douglas; Lemos, Guilherme Vieira Braga; Farina, Alexandre Bellegard; Bergmann, Luciano Andrei; Santos, Jorge Fernandez dos; Reguly, Afonso (2018) [Artigo de periódico]
      Uma liga a base de Níquel, popularmente conhecida como Inconel 625, foi estudada no presente trabalho. O processo Friction Stir Welding (FSW) foi realizado com duas velocidades de rotação da ferramenta (1200 e 200 rpm) e ...

    • Comparative study between crack tip opening displacement techniques by statistical analysis 

      Schmidt, Matheus Lothar; Lemos, Guilherme Vieira Braga; Fabrício, Daniel Antônio Kapper; Reguly, Afonso (2021) [Artigo de periódico]
      Standardized tests may not always achieve all their analytical objectives. Particularly to structural integrity, where a reproduction of the practical occurrences of the industry is desired, new techniques are being ...

    • Feasibility of orbital friction stir welding on clad pipes of API X65 steel and Inconel 625 

      Amavisca, Camila Volff; Bergmann, Luciano Andrei; Lessa, Cleber Rodrigo de Lima; Schröeder, Jerônimo Ghisi; Klusemann, Benjamin; Ramos, Fabiano Dornelles; Lemos, Guilherme Vieira Braga; Reguly, Afonso (2023) [Artigo de periódico]
      Orbital friction stir welding (FSW) has been applied to clad pipes, which is certainly of interest to the oil and gas industry. In this context, an FSW system capable of performing sound joints in one pass with full tool ...

    • High-temperature mechanical properties of cast Al–Si–Cu–Mg alloy by combined additions of cerium and zirconium 

      Bevilaqua, William Lemos; Stadtländer, Antônio Ricardo; Froehlich, Andre Ronaldo; Lemos, Guilherme Vieira Braga; Reguly, Afonso (2020) [Artigo de periódico]
      The main aim of this work is to investigate the effects of combinative Ce and Zr additions (0.3 wt% Ce+0.16 wt% Zr; 0.3 wt% Ce+0.27 wt% Zr and 0.3 wt% Ce+0.36 wt% Zr) on the microstructure and mechanical properties ...

    • Methodology for determination of degree of nodulalaarity in a ductile castiron GGG 40 by ultrasonic velocity test 

      Agnoletto, Douglas; Lemos, Guilherme Vieira Braga; Beskow, Arthur Bortolin; Lessa, Cleber Rodrigo de Lima; Reguly, Afonso (2018) [Artigo de periódico]
      Cast iron alloys combine many elements such as carbon, iron, silicon, magnesium and can be usually classified according to their microstructure in ductile, gray, compacted, white, and malleable. Each one has particularities ...

    • Mitigating the susceptibility to intergranular corrosion of alloy 625 by friction‑stir welding 

      Lemos, Guilherme Vieira Braga; Farina, Alexandre Bellegard; Cardoso, Henrique Ribeiro Piaggio; Bergmann, Luciano Andrei; Ferreira, Jane Zoppas; Santos, Jorge Fernandez dos; Voort, George Vander; Reguly, Afonso (2022) [Artigo de periódico]
      In this work, friction-stir welding (FSW) was employed to alloy 625 grade I (soft annealed) sheets. Therefore, solid-state based welding was undertaken with a tool rotational speed of 200 rpm and a welding speed of 1 mm/s. ...

    • Probing underlying mechanisms for PCBN tool decay during friction stir welding of nickel-based alloys 

      Vicharapu, Buchibabu; Lemos, Guilherme Vieira Braga; Bergmann, Luciano Andrei; Santos, Jorge Fernandez dos; De, Amitava; Clarke, Thomas Gabriel Rosauro (2021) [Artigo de periódico]
      Friction stir welding (FSW) of nickel-based alloys can provide joints with improved corrosion resistance and mechanical properties that are deteriorated significantly during fusion welding of these alloys. However, rapid ...

    • Replacement of gas metal arc welding by friction welding for joining tubes in the hydraulic cylinders industry 

      Sbalchiero, Jeferson André; Martinazzi, Douglas; Lemos, Guilherme Vieira Braga; Reguly, Afonso; Ramos, Fabiano Dornelles (2018) [Artigo de periódico]
      Friction welding is a solid state technology which has been used worldwide. Potential advantages may be recognized as reducing welding project costs, weld weight, environmental impact and to promote enhanced mechanical ...

    • Residual stress analysis of drive shafts after induction hardening 

      Lemos, Guilherme Vieira Braga; Hirsch, Thomas; Rocha, Alexandre da Silva; Nunes, Rafael Menezes (2014) [Artigo de periódico]
      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 ...

    • Towards qualification of friction stir welding to AA5083-O and AA5052-O aluminum alloys 

      Sangalli, Guilherme; Lemos, Guilherme Vieira Braga; Martinazzi, Douglas; Lessa, Cleber Rodrigo de Lima; Beskow, Arthur Bortolin; Reguly, Afonso (2019) [Artigo de periódico]
      Friction Stir Welding (FSW) is an excellent alternative for joining dissimilar and similar materials in comparison to conventional welding processes. In this sense, this work aims at qualifying FSW to similar AA5083-O and ...