Microstructural characterization and the effect of phase transformations on toughness of the UNS S31803 duplex stainless steel aged treted at 850 oC - Zucato, Igor; Moreira, Margarete Cristina; Machado, Izabel Fernanda; Lebrão, Susana Marraccini Giampietri (Materials Research: Revista Brasileira de Materiais, 2002)