Effect of pre-quenching and pre-normalization on microstructures and mechanical properties of 40Cr steel after zero-time-holding quenching. Engineering Review, [S. l.], v. 34, n. 2, p. 69–74, 2014. Disponível em: https://engineeringreview.org/index.php/ER/article/view/381.. Acesso em: 22 oct. 2025.