1. Department of Metallurgical and Materials Engineering; Universidade Federal de Minas Gerais (UFMG), Escola de Engenharia - Bloco 2, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, MG 31270-901; Brazil
2. Department of Materials Science and Engineering; Ghent University (UGent), Technologiepark 903, Gent, B-9052 Zwijnaarde; Belgium