中低碳空冷贝氏体钢的冲击磨损性能  

Impact Wear Property of Medium-Low Carbon Air-Cooled Bainitic Steels

作　　者：陈颜堂[1] 白秉哲[1] 方鸿生[1] 

机构地区：[1]清华大学材料科学与工程系,北京100084

出　　处：《钢铁研究学报》2001年第3期40-43,共4页Journal of Iron and Steel Research

摘　　要：究了 4种碳含量分别为 0 .15 %、0 .18%、0 .2 3%和 0 .30 %的空冷贝氏体钢的冲击磨损性能 ,并用扫描电镜观察了磨损表面的形貌特征。结果发现 ,随着碳含量的提高 ,冲击磨损速率降低 ,碳含量分别为 0 .18%、0 .2 3%和 0 .30 %的 3种贝氏体钢的冲击磨损速率相近。前 3种低碳空冷贝氏体钢的磨损表面除了有磨损犁沟外 ,还存在唇状裂纹。碳含量越低 ,磨损表面越粗糙。所研究的 4种贝氏体钢中 ,当抗拉强度超过 15 5 0 MPa时 。The impact property of four air cooled bainitic steels containing carbon 0.15, 0.18, 0.23 and 0.30 % respectively was studied. The morphology of worn surfaces has been investigated by scanning electron microscopy (SEM). The results indicated that the wear rate decreases with increasing carbon content. Three bainitic steels containing 0.18、 0.23 and 0.30 % C exhibit a similar impact wear rate. The plough grooves and lip like cracks on worn surfaces of three low carbon air cooled bainitic steels were found. The lower carbon level the steel contains, the rougher the worn surface. For the four experimental bainitic steels, when tensile strength is more than 1 550 MPa, the transverse cracks may generate easily under the high energy impact wear condition.

关 键 词：贝氏体钢 组织 冲击磨损性能 空冷 含碳量 

分 类 号：TG142.2[一般工业技术—材料科学与工程]