Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Celso Antonio Barbosa"'
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:
Jefferson de Oliveira Gomes, Celso Antonio Barbosa, Andrey Teixeira Portela, Luis Alberto Breda Mascarenhas, Valter Estevão Beal, Cristiano Vasconcellos Ferreira
Publikováno v:
Wear. :129-137
A current trend in the automotive industry is to reduce the engine size while increasing power. The valve and valve seat perform the functions of ensuring the entry of air and combustible material, the output of combustion gases and sealing during th
Autor:
Andrey Teixeira Portela, Tarso Barreto Nogueira, Jefferson de Oliveira Gomes, Celso Antonio Barbosa, Luis Alberto Breda Mascarenhas
Publikováno v:
Journal of the Brazilian Society of Mechanical Sciences and Engineering. 37:1743-1749
The valve and valve seat work together to ensure the entry of air and combustible material, the output of combustion gases and the sealing function of the compression and combustion process. The valve is the most demanding component in high efficienc
Autor:
Mario Cesar Mantovani, Eduardo Netto de Souza, Alexandre Sokolowski, José Britti Bacalhau, Roberto Tiburcio Canito Frota-Junior, Alexandre Bellegard Farina, Celso Antonio Barbosa
Publikováno v:
Tecnologia em Metalurgia Materiais e Mineração. 11:296-303
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 me
Publikováno v:
Tecnologia em Metalurgia Materiais e Mineração. 10:329-335
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 microstructural
Autor:
Paula Fernanda da Silva Farina, Alexandre Bellegard Farina, Celso Antonio Barbosa, Hélio Goldenstein
Publikováno v:
Tecnologia em Metalurgia Materiais e Mineração. 9:140-147
Autor:
Alexandre Bellegard Farina, Hélio Goldenstein, Julio Capo, Paula Fernanda da Silva Farina, Celso Antonio Barbosa, Linilson Rodrigues Padovese
Publikováno v:
Solid State Phenomena. :511-516
The effects of low temperature isothermal treatments on a quenched AISI D2 tool steel was studied using Barkhausen Noise, X-ray diffraction, dilatometry and optical and electronic microscopy. The specimens were austenitized at 1040°C and quenched in
Publikováno v:
Advanced Materials Research. 223:449-455
The aim of this study was to evaluate the influence of tool flank wear on polishability and wear resistance of mold steel. Two surfaces of Villares VP20ISO steel were machined, one was roughed with worn tools (VB>0.3 mm) and another one with new tool