形变参数对低碳钢形变诱导相变的影响  

Effects of deformation parameters on deformation induced ferrite transformation in plain carbon steel

作　　者：虞海燕[1] 王凯[2] 刘春明[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《钢铁研究》2009年第5期7-9,共3页Research on Iron and Steel

摘　　要：低碳钢在略高于Ar3温度大变形会发生形变诱导铁素体相变(DIFT),通过热模拟实验方法考察了变形参数(变形前冷速、变形温度和应变速率)对形变诱导铁素体晶粒尺寸的影响规律。结果表明,大变形的条件下,形变诱导铁素体晶粒尺寸随着相变前冷速和应变速率的提高、变形温度的降低而减小,且通过变形参数对相变驱动力和晶粒长大的影响讨论了其对诱导铁素体晶粒尺寸产生影响的机制。The effects of deformation parameters, such as cooling rate before deformation, deformation temperature and strain rate, on the grain size of deformation induced ferrite （DIF） in low carbon steel during heavy deformation at temperatures slightly higher than Ar3 are investigated by means of thermo-simulator. The experimental results show that the DIF grains refine with increase of cooling rate before deformation and strain rate, and decrease with lowering deformation temperature. The mechanism of these deformation parameters on the DIF grains size are discussed.

关 键 词：形变诱导铁素体相变 超细铁素体晶粒 低碳钢 

分 类 号：TG142.1[一般工业技术—材料科学与工程]