Zobrazeno 1 - 10
of 40
pro vyhledávání: '"A. Bellegard Farina"'
Autor:
Rosa Maria Sales da Silveira, Alessandra Vieira Guimarães, Clarissa Hadad de Melo, Rafaella Martins Ribeiro, Alexandre Bellegard Farina, Loïc Malet, Luiz Henrique de Almeida, Leonardo Sales Araujo
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 3283-3290 (2022)
The nickel-base alloy 718 is widely used due to its superior performance at high temperatures, combining properties such as high strength, high corrosion and oxidation resistances and good formability and weldability. Its properties can be further im
Externí odkaz:
https://doaj.org/article/6efd749e13994198b358a0e406b30b15
Autor:
Guilherme Vieira Braga Lemos, Alexandre Bellegard Farina, Henrique Piaggio, Luciano Bergmann, Jane Zoppas Ferreira, Jorge Fernandez dos Santos, George Vander Voort, Afonso Reguly
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract 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. Microstructural fe
Externí odkaz:
https://doaj.org/article/bb9a1476cf02467c8796767088ba2e5d
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:
Alexandre Bellegard Farina, José Britti Bacalhau, Roberto Tiburcio Canito Frota Junior, Eduardo Netto de Souza, Mario Cesar Mantovani, Alexandre Sokolowski, Celso Antonio Barbosa
Publikováno v:
Tecnologia em Metalurgia, Materiais e Mineração, Vol 11, Iss 4, Pp 296-303 (2014)
In this work there are presented some examples of the use of thermodynamic modeling to development of new alloys for different segments and applications. By the use of thermodynamic modeling coupled with numerical simulations of heat transport and
Externí odkaz:
https://doaj.org/article/f2db3a41bf7f4fe0974b3524a85f095b
Publikováno v:
Tecnologia em Metalurgia, Materiais e Mineração, Vol 10, Iss 4, Pp 329-335 (2013)
UNS N07751 and UNS N07080 alloys are commonly applied for automotive valves production for high performance internal combustion engines. These alloys present high hot resistance to mechanical strength, oxidation, corrosion, creep and microstructura
Externí odkaz:
https://doaj.org/article/1377ecf8e52b4acb96fb903d5bd375f0
Autor:
Paula Fernanda da Silva Farina, Alexandre Bellegard Farina, Celso Antonio Barbosa, Helio Goldenstein
Publikováno v:
Tecnologia em Metalurgia, Materiais e Mineração, Vol 9, Iss 2, Pp 140-147 (2012)
The effects of cryogenic treatments on an AISI D2 cold work tool steel using X-ray diffraction from syncronton radiation are studied. The aim of this work is to verify the effects of: i) time at cryogenic temperatures (3, 10 and 30 hours); ii) cryo
Externí odkaz:
https://doaj.org/article/656f516e11fa486ea510b8c6d863000d
Autor:
A. Reguly, Jane Zoppas, Henrique Piaggio, Guilherme Vieira Braga Lemos, George Vander Voort, Alexandre Bellegard Farina, Jorge Fernandez dos Santos, Luciano Bergmann
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 welding speed of 1 mm/s. Microstructural features were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7a5d5c77ca6abafa2fc36220422c2b3
https://doi.org/10.21203/rs.3.rs-712605/v1
https://doi.org/10.21203/rs.3.rs-712605/v1
Autor:
Luciano Bergmann, Afonso Reguly, Alexandre Bellegard Farina, Douglas Martinazzi, Jorge Fernandez dos Santos, Guilherme Vieira Braga Lemos
Publikováno v:
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
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 velocidade de soldagem ent
Publikováno v:
Journal of Phase Equilibria and Diffusion. 38:252-256
The knowledge of the thermodynamic features of the NiO-CaO system is of fundamental importance to the modelling of metal-slag-refractory equilibrium of Ni-based alloys melting process in electric arc furnaces as well as for development a self-consist
Autor:
Alexandre Bellegard Farina, Rosa Maria Sales da Silveira, Luiz Henrique de Almeida, Jean Dille, Alessandra Vieira Guimarães, Leonardo Sales Araújo
Publikováno v:
Materials Science and Engineering: A. 776:139023
The influence of yttrium (Y) addition on the microstructure and mechanical properties of alloy 718 was examined by scanning and transmission electron microscopy, energy dispersive spectroscopy and tensile tests. Two alloys with 0.1% and 1.0% weight Y