Study of Mechanism for Edge Cracks of Boron Alloying Low Carbon Steel Plate

摘要：

The hot ductility of boron alloying low carbon steel in thin slab casting process was tested by Gleeble-1500 tester, the embrittlement region under slower strain rate was found in 850～950℃, and the worst hot ductility is appearing at 900℃ with intergranular brittleness failure. The bad hot ductility is due to the precipitation of boron nitride along prior austenite grain boundary densely and causes the thin slab intergranular cracks. The thin slab transverse comer crack is primary concluded to be one of the factors causing edge cracks of boron alloying low carbon steel plate.

关键词： thin slab boron alloying hot ductility transverse comer crack edge crack

作者: ZHANG Cheng-wu GUAN Chun-li XI Chang-suo PIAO Feng-yun TAO Hong-biao ZHANG Hui WANG Yu-ping LIU Jia-qi SONG Kai BI Hong-zhi

作者单位: Technology Center of Tonghua Iron & Steel Co, Ltd., Tonghua 134003, Jilin, China National Engineering & Research Center of Continuous Casting Technology, CISRI, Beijing 100081, Chin

会议类型: 国际会议

会议名称: 2009年薄板坯连铸连轧国际研讨会(TSCR 2009)(2009 International Symposium on Thin Slab Casting and Rolling)

会议地点: 南京

会议语种:英文

页码: 141-146

在线出版日期: 2009-05-13（万方平台首次上网日期，不代表论文的发表时间）