WENTZCOVITCH, ALEXANDREAMBROZIO FILHO, FRANCISCOSILVA, LUIS C.E. daNEVES, MAURICIO D.M. das2014-11-172014-11-182015-04-022014-11-172014-11-182015-04-02WENTZCOVITCH, ALEXANDRE; AMBROZIO FILHO, FRANCISCO; SILVA, LUIS C.E. da; NEVES, MAURICIO D.M. das. Sintering of AISI Msub(2) high speed steel with the addition of NbC. In: INTERNATIONAL LATIN-AMERICAN CONFERENCE ON POWDER TECHNOLOGY, 7th, November 8-10, 2009, Atibaia, SP. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/12543.http://repositorio.ipen.br/handle/123456789/12543. The influence of adding 6 wt% (NbC) niobium carbide on the sintering temperature and microstructure of high speed steel - AISI M2 (0.87% C, 5.00% Mo, 6.00% W, 4,00% Cr, 2.00% V and Fe bal.) powder was studied. The starting material was obtained by vacuum melting followed by atomization in water. The samples were axially cold compacted in a cylindrical matrix and then vacuum sintered at 1250 and 1350 °C. Dilatometry and differential scanning calorimetry measurements indicated an increase in sintering temperature with addition of niobium to the AISI M2 steel. Optical and scanning electron microscope observations revealed a microstructure with uniformly distributed niobium carbides.openAccesspowder metallurgysteelsniobium carbidessinteringmicrostructuredilatometryoptical microscopyscanning electron microscopyTexto completo de eventohttps://orcid.org/0000-0002-1304-2117