高级别煤矿巷道锚杆钢的冲击性能研究  

Research on Impact Property of High Level Coal Mine Tunnel Anchor Steel

作　　者：晁月林[1] 周玉丽[1] 孙齐松[1] 邸全康[1] 程四华[1] 柳洋波[1] 

机构地区：[1]首钢技术研究院,北京100043

出　　处：《热加工工艺》2016年第18期102-104,111,共4页Hot Working Technology

摘　　要：选择OM、SEM、EPMA和能谱仪,研究了显微组织、夹杂物、心部成分偏析对高级别煤矿巷道锚杆钢冲击韧性的影响。结果表明:两种试验钢的冲击功平均值分别为46 J和24.7 J。冲击值低的试验钢心部存在马氏体组织和链状的大型夹杂物,可导致冲击性能降低。C、Mn等成分偏析导致了心部马氏体的大量转变。By OM, SEM, EPMA and energy spectrum, the effects of microstructure, inclusion and dendrite segregation on the impact toughness of high level coal mine tunnel anchor steel were researched. The results show that the average impact energy of the two experiment steels is 46 J and 24.7 J ,respectively. The martensite structure and large catenarian inclusions exist in the center of test steel with low impact value, which can lead to the decrease of impact properties. The segregation of C and Mn leads to large amours of martensite transformation in center.

关 键 词：锚杆钢 冲击韧性 夹杂物 EPMA 成分偏析 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335.6[金属学及工艺—金属材料]