Effect of dissolved niobium on eutectoid transformation behavior  

作　　者：Qi-long Yong Zheng-yan Zhang Xin-jun Sun Jian-chun Cao Zhao-dong Li 

机构地区：[1]Department of Structural Steels,Central Iron and Steel Research Institute [2]Department of Materials Science and Engineering,Kunming University of Science and Technology

出　　处：《Journal of Iron and Steel Research International》2017年第9期973-978,共6页

摘　　要：The effect of dissolved niobium on the eutectoid transformation behavior in near-eutectoid high-carbon steels has been studied.Dissolved niobium is important in the eutectoid transformation behavior.It increases the eutectoid carbon content significantly（by^0.0477% per 0.00001% dissolved niobium）,increases the hardenability of steel markedly,yields finer,more uniform,polygonal proeutectoid ferrite,induces a transition in morphology of eutectoid cementite from lamellar to somewhat spheroidal,and increases the misorientation angle of pearlite colonies from being focused near 0°to near 60°.The effect of dissolved niobium on the eutectoid transformation behavior in near-eutectoid high-carbon steels has been studied.Dissolved niobium is important in the eutectoid transformation behavior.It increases the eutectoid carbon content significantly（by^0.0477% per 0.00001% dissolved niobium）,increases the hardenability of steel markedly,yields finer,more uniform,polygonal proeutectoid ferrite,induces a transition in morphology of eutectoid cementite from lamellar to somewhat spheroidal,and increases the misorientation angle of pearlite colonies from being focused near 0°to near 60°.

关 键 词：Niobium High carbon steel Eutectoid transformation Pearlite 

分 类 号：TG142.31[一般工业技术—材料科学与工程]