autores José Joaquim Carneiro Barbosa José Luis de Carvalho Martins Alves Alves, J. L. Barbosa, J. Puga, Hélder Azevedo, T. Barbosa, J. Azevedo, T. Ribeiro, Carlos Alves, J. L. Ribeiro, S.
palavras-chave Low pressure sand casting Mechanical properties Oxides Simulation Ultrasonic degassing