摘要
为了研究轧制过程中不同变形量对环保型含铋易切削钢的微观组织演变和MnS夹杂物形貌及分布的影响规律,利用MMS-200热力模拟试验机对1214Bi易切削钢进行了单道次热压缩实验。结果表明:不同变形量对实验钢的显微组织构成没有显著影响;但是随着变形量的增加,小角度晶界比例先减少后增加,织构成分的演变规律为{001}<110>+{110}<001>→α织构+Cube织构→γ织构+α织构;当变形量小于30%时,MnS夹杂物的尺寸比较均匀,形状偏向于球形和纺锤形;随变形量增大,MnS夹杂物的偏聚严重,破碎程度也较大。
In order to study the influence of different deformation amounts during rolling on the microstructure evolution and the morphology and distribution of MnS inclusions of environmental friendly Bi bearing free-cutting steel,a single pass hot compression experiment was carried out on the 1214Bi free cutting steel using the MMS-200 thermal simulation test machine.The results showed that different deformation amounts had no significant effect on the microstructure composition of the experimental steel,but with the increase of deformation amount,the proportion of small angle grain boundaries first decreased and then increased,and the evolution law of texture composition was{001}<110>+{110}<001>→αtexture+Cube texture→γtexture+αtexture.When the deformation amount was less than 30%,the size of MnS inclusions was relatively uniform,and their shapes tended to be spherical and spindle.When the deformation degree increased,the segregation of MnS inclusions was serious,and the degree of fragmentation was also large.
作者
李彬周
姜圆博
王一甲
邵志保
李长生
LI Binzhou;JIANG Yuanbo;WANG Yijia;SHAO Zhibao;LI Changsheng(State Key Laboratory of Metal Materials for Marine Equipment and Application,Anshan 114009,China;Ansteel Beijing Research Institute Co.,Ltd.,Beijing 102200,China;State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China)
出处
《轧钢》
北大核心
2024年第1期20-25,48,共7页
Steel Rolling
关键词
1214Bi易切削钢
热模拟
变形量
微观组织
MnS夹杂物
绿色环保
1214Bi free-cutting steel
thermal simulation
deformation amount
microstructure
MnS inclusion
green and envi-ronmental friendly
