1. Post-Graduation Program in Materials Science and Engineering, Federal University of Sergipe, São Cristóvão City 49100-000, SE, Brazil
2. Post-Graduation Program in Mining, Metallurgical and Materials Engineering, Engineering School, Federal University of Rio Grande do Sul, Porto Alegre City 90035-190, RS, Brazil
3. Rijeza Metallurgical Industry, São Leopoldo City 93140-000, RS, Brazil