摘要
真空熔炼不含稀土元素和稀土元素质量分数为0.1%的Fe-Cr-2Mo合金钢,对其夹杂物组成和形态进行分析,在MM-200型环/块磨损机上进行环/块型磨损试验,并根据磨损试样表面形貌分析了磨损机理。结果表明,Fe-Cr-2Mo合金钢中添加0.1%的稀土后,组织中Mn的S,O夹杂物转变为稀土的S,O夹杂物,其形态由不规则的长条状转变为细粒状;稀土元素使钢的耐磨性明显提高,其磨损机理主要是犁削和疲劳剥落。
Fe-Cr-2Mo alloys with 0. 1% （WB） and 0% rare earth elements were prepared via vacuum smelting, respectively, and their inclusion morphology and wear resistance were investigated by comparison. The results show that the inclusions in the alloy without rare earth elements are mostly manganese sulfides, while those in the alloy with 0.1% rare earth elements are mainly rare earth oxides and rare earth sulfides and the shape of inclusion changes from long stick to fine grain. The wear resistance of Fe-Cr-2Mo alloy with rare earth elements is superior to that of no rare earth elements, and plough and fatigue flaking are the main wear mechanisms according to the wear map.
出处
《武汉科技大学学报》
CAS
2008年第6期591-594,共4页
Journal of Wuhan University of Science and Technology
