冷却速率和冷却温度对SA-210Gr.C钢中带状组织形成的影响  

Effect of Cooling Rate and Cooling Temperature on the Formation of Banded Structure in SA-210Gr.C Steel

作　　者：刘源[1] 许磊磊[1] 赵庆权[1] 何彪[1] 曹金荣[1] 肖功业[1] 

机构地区：[1]天津钢管集团股份有限公司技术中心,天津300301

出　　处：《钢铁研究学报》2014年第6期57-60,共4页Journal of Iron and Steel Research

摘　　要：研究了不同冷却速率和冷却温度对热轧态SA-210Gr.C钢中铁素体、珠光体带状组织的形成规律。为了保证奥氏体向铁素体、珠光体组织转变,试样经快速冷却至一定温度,然后采取空冷的处理工艺。试验结果表明,快速冷却处理可以有效地抑制带状组织的形成,但是需要控制冷却速率以及冷却温度。虽然试样经过快速冷却处理后会形成一定量的魏氏组织,但是其冲击性能并没有显著降低。The formation behavior of ferrite and pearlite banded structure in as-rolled low carbon steel SA-210Gr.C was study at different cooling rates and cooling temperatures.In order to ensure the transformation of austenite to ferrite and pearlite,specimens were rapidly cooled to a specific temperature and followed by air cooling to room temperature.The results indicate that rapid cooling treatment is effective to suppress the formation of ferrite and pearlite band structure.Even though Widmansttten ferrite is observed after the rapid cooling treatment,the impact toughness is not reduced significantly.

关 键 词：亚共析钢 带状组织 快速冷却 A_(r3) 魏氏组织 

分 类 号：TG142.11[一般工业技术—材料科学与工程]