强磁场对硅锰铸钢等温珠光体转变的影响  

Influence of High Magnetic Field on Isothermal Pearlite Transformation of Si-Mn Casting Steel

作　　者：赵辉[1] 周晓玲[1] 董旭刚[1] 林波[1] 

机构地区：[1]昆明理工大学材料学院,云南昆明650093

出　　处：《热加工工艺》2010年第12期14-16,20,共4页Hot Working Technology

基　　金：云南省自然科学基金资助项目(2004E0008Q)

摘　　要：对硅锰铸钢在强磁场下低于A1点的等温珠光体转变组织及性能进行了研究。结果表明,强磁场明显促进了珠光体的转变,珠光体的转变量随磁场强度的升高而增加,磁场作用时间的延长也会使珠光体转变量增加。在珠光体长大过程中,强磁场促使渗碳体由分叉的短杆状趋向更完整片层,两相趋于平行排列,且随磁场强度的增加,铁素体和渗碳体片层宽度均呈下降趋势,片层间距减小。The microstructure and properties of Si-Mn casting steel in pearlite isothermal transformation were studied under high magnetic field below A1 point. The results show that high magnetic field obviously accelerates pearlite transformation, and the quantity of pearlite increases with the increase of magnetic field intensity and holding time. When pearlite grows, high magnetic field urges trending of podgy cementite into integrated flakes, and two phases turn to be parallel, with the increase of magnetic field intensity, the width of ferrite and cementite flakes decreases, the space between two phases also decreases.

关 键 词：强磁场 珠光体 等温转变 硅锰铸钢 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG156.1[金属学及工艺—金属材料]