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

张玉胜; 刘雅政; 刘照; 乔爱云; 李晓; 井溢农

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

更新时间：2026-01-21

- Effect of Finished Rolling Cooling Rate on Structure of Microalloy Non Quenched-Tempered Steel 34Mn2VN
- Special Steel Vol. 27, Issue 6, Pages: 24-26(2006)
- 作者机构：
  
  1. 北京科技大学材料学院,北京,100083
  2. 包钢集团公司无缝钢管厂,包头,014040
  3. 河北工程大学机电学院,邯郸,056038
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：30 May 2006，
  
  Online First：02 March 2023，
  
  Published：02 March 2006
- 稿件说明：
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张玉胜, 刘雅政, 刘照, et al. Effect of Finished Rolling Cooling Rate on Structure of Microalloy Non Quenched-Tempered Steel 34Mn2VN[J]. Special Steel, 2006, 27(6): 24-26.
DOI：

张玉胜, 刘雅政, 刘照, et al. Effect of Finished Rolling Cooling Rate on Structure of Microalloy Non Quenched-Tempered Steel 34Mn2VN[J]. Special Steel, 2006, 27(6): 24-26. DOI：

摘要

用Gleeble-1500热模拟试验机研究了非调质钢34Mn2VN(%:0.30～0.34C、1.20～1.70Mn、0.014～0.018N、0.07～0.12V)在950℃、平均应变速率2s

-1

、应变15%后以0.1～45℃/s不同冷却速率下冷却的动态CCT曲线和组织转变。结果得出

当冷却速率控制在0.8～2.0℃/s时所得到细小的铁素体和少量贝氏体组织

具有较高的冲击韧性。生产应用表明

采用该冷却速率生产Φ139.7×7.7(mm)和Φ114.0×6.4(mm)管材的冲击功为47.8～50.9J。

Abstract

Dynamic continuous cooling transformation(CCT)curves and structure transition of non quenched-tempered steel 34Mn2VN(0.30~0.34C

1.20～1.70Mn

0.014～0.018N

0.07～0. 12V)at 950℃ with average strain rate 2 s-¹and 15% strain

then cooling with 0.1～45 ℃/s different rate have been studied by Cleeble-1500 thermal simulation machine. The results obtained that as cooling rate was controlled within 0.8~2.0 ℃/s

the fine ferrite and minor bainite structure was obtained

it had higher impact toughness. Commercial production application showed that the impact energy of φ139.7×7.7(mm) and φ114.0×6.4(mm) steel tubes produced with that cooling rate was 47.8～50.9 J.

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