Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel

姜超; 刘雅政; 张朝磊; 肖金福; 张玮; 易敏

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Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel

更新时间：2026-01-21

- Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel
- Special Steel Vol. 32, Issue 1, Pages: 58-60(2011)
- 作者机构：
  
  1. 北京科技大学材料科学与工程学院,北京,100083
  2. 首钢技术研究院,北京,100041
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 September 2010，
  
  Online First：29 September 2022，
  
  Published：29 September 2011
- 稿件说明：
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姜超, 刘雅政, 张朝磊, et al. Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel[J]. Special Steel, 2011, 32(1): 58-60.
DOI：

姜超, 刘雅政, 张朝磊, et al. Dynamic Observation and Analysis on Austenite Grain Growth and Inclusions in Nb-Bearing Spring Steel[J]. Special Steel, 2011, 32(1): 58-60. DOI：

摘要

采用高温金相显微镜观察了含铌弹簧钢60Si2MnNb(%:0.57C、1.60Si、0.76Mn、0.34Cr、0.022Nb)在950～1 250℃真空加热时奥氏体晶粒长大现象

得到其晶粒长大动力学曲线

通过Arrhenius方程对粗化过程进行了曲线拟合;通过SEM(Scanning Electron Microscope)和EDS(Energy Dispersive Spectrometer)对出现的二相粒子进行了分析。实验结果表明

含铌弹簧钢60Si2MnNb晶粒粗化温度为1 050℃

较60Si2MnA钢的晶粒临界粗化温度TGC提高了100℃;出现的二相粒子为非金属夹杂物。

Abstract

The behavior of austenite grain growth of Nb-bearing spring steel 60Si2MnNb (%: 0. 57C

1. 60Si

0. 76Mn

0. 34Cr

0. 022Nb) during heating at 950 ~ 1 250℃. in vacuum has been observed by using high temperature microscope

and the curve of coarsening process is fitted by Arrhenius equation to get the austenite grain growth dynamic curve； and an analysis on occurred second phase particles has been carried out by using scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). Test results show that the grain coarsening temperature of Nb-bear- ing steel 60Si2MnNb is 1 050℃ it is higher that of steel 60Si2MnA by 100℃; the occurred second phase particles in steel are nonmetallic inclusions.

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