Chiến. A STUDY ON THE IMPROVEMENT OF THE IMPACT TOUGHNESS OF 30CrMnSi STEEL BY COMPLEX HEAT TREATMENT TECHNOLOGY. J. Mil. Sci. Technol. [Internet]. 2021 Oct. 10 [cited 2026 Mar. 13];(75):101-6. Available from: https://jmst.mod.gov.vn/index.php/jmst/article/view/272