钢管2026，Vol.55Issue(1)：19-24,6.DOI:10.19938/j.steelpipe.1001-2311.2026.1.19.24
Ce微合金化对25CrMoV钢连续冷却组织转变行为的影响
Influence of Rare Earth Ce Microalloying on Continuous Cooling Transformation Behavior of 25CrMoV Steel Microstructure
姜涛 1石晓霞 1詹飞 1李建元1
作者信息
- 1. 内蒙古包钢钢联股份有限公司钢管分公司,内蒙古 包头 014010
- 折叠
摘要
Abstract
The phase transformation points and continuous cooling transformation(CCT)curves of 25CrMoV test steels without Ce and with 0.007 6%Ce content are determined via relevant tests,and the room temperature microstructures of the two test steels are observed under different cooling speeds,and their hardness is measured.The analysis results show that the rare earth Ce alloying reduces the temperatures at Ac1,Ar1 Points of the 25CrMoV test steel,whereas increases the temperatures of Ac3,Ar3,Ms and Mf Points;and the addition of rare earth Ce expands both the F﹢P transformation zone and the B transformation zone,and shifts the F﹢P transformation zone to the right;when the continuous cooling rate is≥10℃/s,the microalloying of rare earth Ce reduces the M transformation zone,and inhibits the transformation of M;when the continuous cooling rate is within the range of 1.0～40℃/s,the hardness of the 25CrMoV test steel with rare earth Ce is significantly higher than that of 25CrMoV test steel without Ce.关键词
25CrMoV钢/稀土Ce/CCT/微观组织/连续冷却Key words
25CrMoV steel/rare earth Ce/CCT/microstructure/continuous cooling引用本文复制引用
姜涛,石晓霞,詹飞,李建元..Ce微合金化对25CrMoV钢连续冷却组织转变行为的影响[J].钢管,2026,55(1):19-24,6.
