FRANCISCO AMBROZIO FILHO
100 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 100
Artigo IPEN-doc 24341 Secondary hardening of an AISI M3:2 high speed steel sinter 23 hot isostatic pressed2017 - ARAUJO FILHO, O.O.; GONZALEZ, C.H.; URTIGA FILHO, S.L.; OLIVEIRA, C.A.N.; SILVA, N.D.G.; AMBROZIO FILHO, F.The main aim of this work was to study the behavior of the secondary hardening of AISI M3:2 high speed steel named Sinter 23® produced by powder metallurgy process of hot isostatic pressing (HIP). The M3:2 high speed steel Sinter 23® was submitted to heat treatment of hardening with austenitizing temperatures of 1140 ºC, 1160 ºC, 1180 ºC and 1200 ºC and tempering at 540 ºC, 560 ºC and finally 580 ºC. The effectiveness and response of the heat treatment was determined using hardness tests (Vickers and Rockwell C hardness) and had its property of secondary hardness evaluated. The results showed that the secondary hardening peak of Sinter 23® high speed steel (tempering temperature at which maximum hardness is attained) is at 540 °C for the lower austenitization temperatures of 1140 °C and 1160 °C, and it is at 560 °C for the higher austenitizing/quenching temperatures of 1180 °C and 1200°C.Capítulo IPEN-doc 04120 Preparation and characterization of stainless steel filters1992 - AMBROZIO FILHO, F.; LIMA, L.F.C.P.; MOURISCO, A.J.; BARBOSA, L.P.; POLA, E.J.G.; NEVES, M.D.M.Capítulo IPEN-doc 04119 Sintering of high speed steels containing niobium1992 - ARAUJO, E.G.; SICILIANO JUNIOR, F.; AMBROZIO FILHO, F.; ALMEIDA FILHO, D.A.; SOUSA, V.A.; NEVES, M.D.M.Livro IPEN-doc 09679 Advanced Powder Technology, 3rd2003 - AMBROZIO FILHO, F.Livro IPEN-doc 07907 Powder technology: Advanced powder technology. 21999 - SALGADO, L.; AMBROZIO FILHO, F.; MUCCILO, R.Resumo IPEN-doc 10129 The dimensional change in the sintering of mixtures of a high compressible powder and high-alloyed iron powder2003 - NEVES, M.D.M.; KARSOKAS FILHO, N.; RODRIGUES, D.; AMBROZIO, F.F.Resumo IPEN-doc 10126 Study of addition effect of tantalum carbide on reinforcement of properties of sintered stainless steel2003 - OLIVEIRA JUNIOR, M.D.; FURUSAWA, M.; GOMES, U.U.; SOUZA, C.P.; AMBROZIO FILHO, F.Resumo IPEN-doc 10125 On sintering of a AISI M3:2 high speed steel2003 - ARAUJO FILHO, O.O.; NEVES, M.D.M.; AMBROZIO FILHO, F.; QUADROS, N.F.Resumo IPEN-doc 10123 Mechanically alloyed Ag based alloys for dental restaurations2003 - ISHII, H.A.; AMBROZIO FILHO, F.Resumo IPEN-doc 10122 Low pressure powder injection moulding of high speed steel powders2003 - LIBERATI, J.F.; AMBROZIO FILHO, F.