稀土元素对低碳钢中奥氏体-铁素体相变动力学的影响

郭飞, 郑成武, 王培, 李殿中

Effect of Rare Earth Elements on Austenite-Ferrite Phase Transformation Kinetics of Low Carbon Steels

GUO Fei, ZHENG Chengwu, WANG Pei, LI Dianzhong

表1 Fe-C-(RE)和Fe-C-Si-Mn-(RE)合金试样的化学成分

Table 1 Composition of the Fe-C-(RE) alloys and Fe-C-Si-Mn-(RE) alloys (%, mass fraction)

Samples C Si Mn RE (La+Ce) O S P Fe Fe-C 0.14 - - 0 0.0008 <0.0005 0.002 Bal. Fe-C-RE 0.14 - - 0.029 0.0005 <0.0005 0.003 Bal. Fe-C-Si-Mn 0.18 0.25 1.66 0 0.0004 0.001 0.004 Bal. Fe-C-Si-Mn-RE 0.19 0.25 1.64 0.036 0.0005 0.001 0.004 Bal.