MG600钢凝固过程中的微观偏析和成分均匀化  

Micro-segregation and composition homogenization of MG600 steel during solidification

作　　者：陈涛[1] 王福明[1] 郭军 李永亮[1] 邸全康[1,3] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]广东省韶关市质量计量监督检测所,广东韶关512000 [3]首钢技术研究院,北京100043

出　　处：《金属热处理》2017年第10期179-184,共6页Heat Treatment of Metals

基　　金：国家科学自然基金(51374018)

摘　　要：利用动力学软件DICTRA对MG600铸坯凝固过程中的枝晶偏析和等温均匀化退火过程进行模拟,同时将模拟结果与实际退火试验结果进行了对比。结果表明,DICTRA模拟的Si、Mn偏析度结果与试验结果有较好符合,1250℃保温6 h为MG600铸坯的最佳退火工艺。The as-cast dendritic micro-segregation phenomenon and isothermal homogenization annealing of MG600 ingot were predicted by means of DICTRA（ diffusion-controlled transformations） software. Meanwhile,the simulated results and annealing experiment consequence were compared and analyzed. The results show that the micro-segregation factor of Si and Mn results agree well with annealing experiment.Holding for 6 h at 1250 ℃ is best annealing process.

关 键 词：MG600钢 微观偏析 均匀化 扩散 退火 

分 类 号：TG156.2[金属学及工艺—热处理]