广泛应用的锰系耐磨铸钢(0.9～1.4％C,5.5～14.0％Mn)一般都需水韧处理以后才使用,目的是消除铸态组织中的针、网状碳化物(图1a),因针、网状碳化物使韧性显著下降,难以铸态使用。不经热处理而得到大量弥散分布于奥氏体晶粒内部的团球状碳化物,从而提高锰钢性能,已成为凝固学的重要研究内容之一。 Manganese wear resistant cast steel (0.9-1.4% C, 5.5-14.0% Mn), which is widely used, is usually used only after water toughening to eliminate the needles and reticular carbides in the as-cast structure (Figure 1a) , Due to needle, mesh carbide toughness decreased significantly, it is difficult to cast use. It has been one of the important studies in the field of solidification that a large amount of spherical carbides dispersed within the austenite grains are obtained without heat treatment to improve the properties of the manganese steel.