【摘要】 综述了耐磨钢中共晶体团球化的研究进展情况。通过分析共晶体的结构及形成机理,提出了采用变质处理控制钢液凝固组织,在铸态下获得团球状共晶体增强钢基自生复合材料的新方法。该材料利用团球状γ+(Fe,Mn)3C两相共晶体来强化高韧性钢基体,因而具有优异的力学性能和耐磨性,是抵抗中、低冲击磨料磨损工况的理想材料,具有广阔的应用前景。更多还原

【Abstract】 The research status of eutectic nodularization in wear steel for the past few years is summarized. Based on analyzing the structure and the formation mechanisms of nodular eutectic, an advanced method for controlling the solidification structure of steel melt by modification is developed, in which insitu nodular eutectic reinforced matrix composite can be obtained. The composite has remarkable mechanical properties and wear resistance because the γ+(Fe, Mn)3C binary eutectic can strengthen the steel matrix greatly. It is an ideal material to resist abrasive wear under low and medium impact working condition, so it has bright prospects of application.更多还原