强磁场下冷却速度对Fe-0.12%C合金显微组织的影响

Influence of cooling rates on the morphology of pearlite in Fe-0.12%C alloy under high magnetic field

研究了强磁场(12T)下冷却速度对Fe-0.12%C合金中的珠光体组织形貌的影响.结果表明:强磁场下珠光体团的长轴方向与磁场方向平行且伸长的程度随其冷却速度的提高而减弱.板平面平行于磁场方向比垂直于磁场方向放置的试样的珠光体面积分数低,同时珠光体团长轴方向与磁场方向平行且伸长的程度也低.最后,探讨了强磁场下珠光体组织形貌的演变机理.

The influence of cooling rates on the morphology of pearlite in Fe-0.12%C alloy under high magnetic field （12T） was investigated. It is shown that the long axes of pearlite colonies tend to align and elongate along the magnetic field direction, and such tendencies become weak as the cooling rates increases. The pearlite percentage in the sample placed with its plate plane parallel to the magnetic field direction reduces as compared with the one placed with its plate plane perpendicular to the field direction. Meanwhile, the tendencies of elongation of pearlite colonies and alignment of their long axes along the magnetic field direction decreases. Finally, the mechanism of magnetic field on the morphology of pearlite evolution is discussed.