Oliveira Júnior, José Rogério deMonteiro, Renata AparecidaPaolinelli, Sebastião da CostaCota, André Barros2018-10-252018-10-252018OLIVEIRA JÚNIOR, J. R. de et al. Kinetics of magnetic ageing of 2%Si non-oriented grain electrical steel. Materials Research, v. 21, n.1, p. e20170575, out. 2018. Disponível em: <http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1516-14392017005055016&lng=es&nrm=iso>. Acesso em: 16 jun. 2018.15161439http://www.repositorio.ufop.br/handle/123456789/10452The effect of carbon content on the magnetic ageing index and Vickers hardness evolution on annealed samples of 2%Si non-oriented grain electrical steel was studied. Samples with 40 and 60ppm carbon content were subjected at ageing temperatures of 200 and 225ºC, respectively. During the ageing treatment, the cycle was interrupted on several time intervals in order to obtain the core loss and to determine Vickers hardness. The precipitates were characterized using scanning electron microscope (SEM). Using the software MatCalc, computer simulations of ε-carbide precipitation were performed and compared with experimental data from literature. The results for both carbon contents showed that the maximum hardness value was achieved in shorter time than that to achieve the maximum magnetic ageing, indicating that the critical size of precipitates more harmful to the magnetic properties is larger than the ones that maximize the hardness.en-USabertoMagnetic ageing indexVickers hardnessSimulationArtigo publicado em periodicoO periódico Materials Research dá permissão ao RI/UFOP para depositar uma cópia eletrônica dos artigos publicados por esse periódico em que ao menos um dos autores é aluno ou professor da UFOP. Contato via email em 25 out. 2013.