一九六七年金属研究所、包头冶金研究所及鞍钢钢铁研究所共同研究了七种复合稀土合金及不同加入方法对16锰钢横向冲击韧性的影响。试验用钢在25公斤中频感应炉内熔炼。分析其化学成分为(%):C 0.12/0.18,Si0.35/0.50,Mn 1.30/1.60,S 0.004/0.04,P 0.01/0.02,残留稀土量为O.02/0.06。复合稀土合金的化学成分列于表1。其加入量按稀土量计算为0.2%。根据两种工艺制度将稀 In 1967, the Institute of Metals, Baotou Metallurgical Research Institute and Anshan Iron and Steel Institute jointly studied the impact of seven rare earth alloys and different addition methods on the transverse impact toughness of 16 manganese steel. The test steel is melted in a 25 kg medium frequency induction furnace. The chemical composition was analyzed as follows: C 0.12 / 0.18, Si 0.35 / 0.50, Mn 1.30 / 1.60, S 0.004 / 0.04, P 0.01 / 0.02 and the residual rare earth content was 0.02 / 0.06. The chemical composition of the composite rare earth alloy is shown in Table 1. The addition of 0.2% by the amount of rare earth calculated. According to the two process system will be thin