利用结合我国包头铁矿资源特点而研制的铌-锰-铁作合金剂,在不同用途的铸铁材料中加入不同数量的铌,能够细化基体组织,提高材料的抗拉强度、硬度和抗磨性能等。通过电子显微镜观察及电子探针检验得出;铌在铸铁中主要与碳、氮形成NbCN,并均匀、弥散地分布在基体上,起弥散强化作用。 Using the niobium-manganese-iron alloy agent developed in combination with the characteristics of Baotou iron ore resources in our country, adding different amounts of niobium to cast iron materials of different uses can refine the matrix structure and improve the tensile strength, hardness and wear resistance of the materials Performance and so on. Obtained by electron microscopy and electron probe test; niobium in the cast iron mainly with carbon, nitrogen to form NbCN, and uniformly and dispersedly distributed in the matrix, played the role of dispersion strengthening.