Effect of Heat Treatment on the Microstructure, Impact Toughness and Hardness of High-Chromium White Cast Iron with Added Niobium and Manganese Minerals. alkej [Internet]. 2025 Mar. 1 [cited 2025 Mar. 3];21(1):73-88. Available from: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/1005