硫化锰夹杂物在YF45MnV钢中行为的原位观察  

In-situ observation of manganese sulfide inclusions in YF45MnV steel

作　　者：邵肖静[1] 王新华[1] 王万军[1] 黄福祥[1] 姜敏[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《北京科技大学学报》2010年第5期570-573,共4页Journal of University of Science and Technology Beijing

摘　　要：采用共焦激光扫描显微镜首次原位观察YF45MnV钢中MnS夹杂在连续升温过程中的变化.结果表明:在匀速加热过程中,细长条状MnS首先转变为近球状硫化物组成的串状夹杂物,然后近球状硫化物发生扩散长大,数量减少;温度增加到一定程度后,MnS夹杂发生固溶现象,其面积反而减小.The change process of MnS inclusions in YF45MnV steel was in-situ observed by confocal laser scanning microscope.The result shows that during the continuous heating process,slender MnS inclusions firstly change into string-like inclusions composed of subsphaeroidal sulfides,then these subsphaeroidal sulfides diffuse and grow up with the number decreasing.When the temperature increases to some extent,MnS inclusions dissolve to the steel and the areas of corresponding sulfides decrease.

关 键 词：易切削钢 MnS夹杂物 尺寸 扩散 固溶 

分 类 号：TF031[冶金工程—冶金物理化学] TF762.2