Investigation on Continuous Cooling Transformation Process of Low Carbon Bainite Rail Steel U25CrNi by Dilatation and in-situ Observation Method

万菲; 刘晓卫; 朱敏; 闻臻

您当前的位置：

首页 >

文章列表页 >

Investigation on Continuous Cooling Transformation Process of Low Carbon Bainite Rail Steel U25CrNi by Dilatation and in-situ Observation Method

更新时间：2026-01-21

- Investigation on Continuous Cooling Transformation Process of Low Carbon Bainite Rail Steel U25CrNi by Dilatation and in-situ Observation Method
- Special Steel Vol. 43, Issue 3, Pages: 79-84(2022)
- 作者机构：
  
  1. 宝钢股份中央研究院,武汉,430080
  2. 中国铁路郑州局集团有限公司工务部,郑州,450052
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：10 August 2021，
  
  Online First：22 June 2022，
  
  Published：22 June 2022
- 稿件说明：
移动端阅览
万菲, 刘晓卫, 朱敏, et al. Investigation on Continuous Cooling Transformation Process of Low Carbon Bainite Rail Steel U25CrNi by Dilatation and in-situ Observation Method[J]. Special Steel, 2022, 43(3): 79-84.
DOI：

万菲, 刘晓卫, 朱敏, et al. Investigation on Continuous Cooling Transformation Process of Low Carbon Bainite Rail Steel U25CrNi by Dilatation and in-situ Observation Method[J]. Special Steel, 2022, 43(3): 79-84. DOI：

摘要

利用Formastor-F淬火膨胀仪热模拟和VL2000DX-SVF17SP高温激光共聚焦显微镜观察

研究了U25CrNi低碳贝氏体钢轨(/%:0.25C

1.73Si

1.69Mn

0.012P

0.002S

1.40Cr

0.57]Ni

0.49Mo

0.06V)从950℃以不同冷却速度连续冷却后的膨胀曲线和金相组织。结果表明

低冷速下(0.2℃/s)

实验钢组织主要为贝氏体;随冷却速度增大至1℃/s

实验钢组织逐渐过渡为贝氏体和马氏体

且贝氏体板条尺寸随冷速增大而逐渐减小;当冷速达到2℃/s时

冷却过程中基本只发生马氏体相变

实验钢硬度随冷速增大而逐渐增大。

Abstract

By Formastor-F quenching dilatometer thermal simulation and VL2000DX-SVF17SP high temperature laser scanning confocal microscope ( LSCM) observation

the dilatation curve and microstructure of a low carbon bainite rail steel of U25CrNi (/% ：0.25C

1.73Si

1.69Mn

0.012P

0.002S

1.40Cr

0.57Ni

0.49Mo

0. 06V) during continuous cooling process from 950 °C at different cooling rates are studied. The results show that at low cooling rate (0. 2 °C/s)

the microstructure of test steel is mainly bainite ； as the cooling rate increases to 1 °C/s

the microstructure gradually transforms to bainite and martensite

and the size of the bainite plate gradually decreases with the increase of the cooling rate； when the cooling rate reaches 2 °C/s

basically only the martensite transformation occurs during the cooling process

and the hardness of the test steel gradually increases with the increase of the cooling rate.

关键词

Keywords

references

Views

下载量

CSCD

CNKI被引量

Alert me when the article has been cited

提交

Tools

Publicity Resources

Static CCT Curve of Martensite Wear-Resistant Steel NM400

Precipitate Behavior of Second Phase and Structure of Annealed 1.5 mm Cold Rolling Sheet of Nb-Ti Microalloy High Strength Steel

Effect of Finished Rolling Cooling Rate on Structure of Microalloy Non Quenched-Tempered Steel 34Mn2VN

Effect of Solution Temperature on Structure and Properties of 022Cr22Ni5Mo3N Duplex Stainless Steel

Effect of Quenching and Partitioning(Q & P)Process on Structure and Mechanical Properties of Steel 25Si2Ni3

Related Author

陈鑫

徐光

姚耔杉

王俊

魏智睿

刘浩

陈晓

李平和

Related Institution

武汉科技大学省部共建耐火材料与冶金国家重点试验室

武汉科技大学材料与冶金学院

武汉钢铁公司技术中心

钢铁研究总院

北京科技大学材料学院

⁰