硼微合金化对SPHC钢组织、析出物以及屈服强度的影响  

Effect of Boron Micro-alloying on Microstructure,Precipitates and Yield Strength of SPHC Steel

作　　者：范鼎东[1] 张建平[1] 肖丽俊[2] 郭亚东[2] 

机构地区：[1]马鞍山钢铁股份有限公司第一轧钢总厂,安徽马鞍山243000 [2]钢铁研究总院连铸中心,北京100081

出　　处：《钢铁》2006年第9期60-64,共5页Iron and Steel

摘　　要：研究了加硼后对薄板坯连铸连轧(TSCR)流程生产的SPHC热轧钢带力学性能的影响,发现加B后热轧钢带在线检测的平均屈服强度为284 MPa,经48 h时效后,屈服强度降低至248 MPa,冷轧开卷前屈服强度降低至230 MPa,在相同生产工艺条件下加B后屈服强度降低约40 MPa。The effects of boron micro-alloying on mechanical properties of SPHC（Steel Plate Heat Commercial） steel produced by thin slab casting and rolling（TSCR） line were investigated. The results showed that the on-line measured average yield strength of boron-bearing hot strips was 284 MPa, and reduced to 248 MPa and 230 MPa respectively after 48 h aging and before cold rolling. Thus under the same production conditions, the yield strength of boron-bearing steel is about 40 MPa less than that of B-free steel.

关 键 词：硼微合金化 薄板坯连铸连轧 力学性能 

分 类 号：TG113[金属学及工艺—物理冶金]