OSCAR OLIMPIO DE ARAUJO FILHO

OSCAR OLIMPIO DE ARAUJO FILHO

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On sintering of a AISI M3:2 high speed steel
2003 - ARAUJO FILHO, O.O.; NEVES, M.D.M.; AMBROZIO FILHO, F.; QUADROS, N.F.
Fracture toughness of a AISI M3:2 high steel produced by powder metallurgy
2007 - SANTANA da SILVA, W.; GOLDENSTEIN, H.; ARAUJO FILHO, O.O.; AMBROZIO FILHO, F.
Sintering of AISI M3-2 high speed steel-Part II
2005 - ARAUJO FILHO, O.O.; NEVES, M.D.M.; OLIVEIRA, E.E.; SILVA, L.C.E.; SALGADO, L.; AMBROZIO FILHO, F.
Liquid phase sintering of high speed steels seems to be a cheaper processing route in the manufacturing of tool steels if compared to the well-known and expansive hot isostatic pressing high speed steels. In a previous work a M3:2 high speed steel was vacuum sintered from irregular water atomized powder and had its sintering temperature determined. In this work the same powder was uniaxially cold compacted and vaccum sintered by adding some small quantity of carbon (0.3% in weight) to prevent porosity and loss of carbon which result from the sintering cycle. The sintered samples from all these experimental procedures had their density evaluated. The microstructure was evaluated using optical-electronic techniques in order to investigate the best range of sintering temperature. At least five parallel samples were tested to each condition of sintering.
Carbide size and bend strength of M3-2 high speed tool steels
2005 - ARAUJO FILHO, O.O.; RIBEIRO, O.C.S.; NOGUEIRA, R.A.; LIBERATI, J.F.; MUNIZ, L.F.; AMBROZIO FILHO, F.
Grain Size of commercial high speed steel
2005 - NOGUEIRA, R.A.; ARAUJO FILHO, O.O.; SOUZA, L.F.M.; LIBERATI, J.F.; SALGADO, L.; AMBROZIO FILHO, F.
Processing of AISI M2 HSS with addition of NbC by mechanical alloying using two different types of attritor mills
2009 - ARAUJO FILHO, OSCAR O. de; NEVES, MAURICIO D.M. das; GONZALEZ, CEZAR H.; URTIGA FILHO, SEVERINO L.; AMBROZIO FILHO, FRANCISCO
Transverse rupture strengh of a PM tool steel
2003 - ARAUJO FILHO, O.O.; AMBROZIO FILHO, F.; NEVES, M.D.M.; RIBEIRO, O.C.S.; SILVA, C.H.L.
Preparation of metal matrix aluminium alloys composites reinforced by silicon nitride and aluminiam nitride through powder metallurgy techniques
2011 - ARAUJO, EVERTHON R. de; SOUZA, MARCIO M.S. de; AMBROZIO FILHO, FRANCISCO; GONZALEZ, CEZAR H.; ARAUJO FILHO, OSCAR O. de
Processing and manufacturing of metal matrix aluminium alloys composites reinforced by silicon carbide and alumina through powder metallurgy techniques
2011 - ARAUJO, EVERTHON R. de; ALVES, SÉRVULO J.F.; AMBROZIO FILHO, FRANCISCO; URTIGA FILHO, SEVERINO L.; ARAUJO FILHO, OSCAR O. de
Processing and manufacturing of metal matrix aluminium alloys composited reinforced by silicon carbide and alumina through powder metallurgy techniques
2012 - ARAUJO, EVERTHON R. de; ALVES, SÉRVULO J.F.; AMBROZIO FILHO, FRANCISCO; URTIGA FILHO, SEVERINO L.; ARAUJO FILHO, OSCAR O. de