WENTZCOVITCH, A.AMBROZIO FILHO, F.SILVA, L. C. E.Mauricio Neves2021-10-262021-10-262012-08-05WENTZCOVITCH, A.; AMBROZIO FILHO, F.; SIVA, L. C. E.; NEVES, M. D. M. Sintering of AISI M2</SUB> high speed steel with the addition of NbC. Materials Science Forum (Online), v. 727-728, p. 90-95, Aug. 2012.1662-9752https://repositorio.fei.edu.br/handle/FEI/3412The 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.Acesso RestritoHigh speed steelMicrostructureNbCPowder metallurgySinteringArtigo10.4028/www.scientific.net/MSF.727-728.90