Ali, S., Muhammad, K., Channa, A. S., Channa , F. H. ., Memon , I. A. ., Abro, M., Memon, G. M., Iqbal, A., Laghari, A. Q., & Noonari, S. A. (2026). Investigation of morphological and mechanical properties of hardened and tempered AISI 4340 steel. Journal of the Serbian Chemical Society. https://doi.org/10.2298/JSC251123012A (Original work published March 9, 2026)