Graduate Program in Materials Engineering;
Federal Institute of Education;
Science and Technology of Maranhã
o—IFMA;
Sã
o Luís;
MA;
Brazil;
Engineering Coordination;
Universidade UNICEUMA;
Sã
o Luís;
MA;
Brazil;
Super-Duplex; Steels; Welding; Toughness; Pitting; Corrosion; Microhardness;