Effect of Cooling Rate on Structure Evolution of Hot Deformed Ferrite-Bainite Micro Alloying Steel

管丽; 刘雅政; 周乐育; 宋仁伯

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Effect of Cooling Rate on Structure Evolution of Hot Deformed Ferrite-Bainite Micro Alloying Steel

更新时间：2026-01-21

- Effect of Cooling Rate on Structure Evolution of Hot Deformed Ferrite-Bainite Micro Alloying Steel
- Special Steel Vol. 28, Issue 3, Pages: 35-37(2007)
- 作者机构：
  
  北京科技大学材料科学与工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：22 December 2006，
  
  Online First：03 February 2023，
  
  Published：03 February 2007
- 稿件说明：
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管丽, 刘雅政, 周乐育, et al. Effect of Cooling Rate on Structure Evolution of Hot Deformed Ferrite-Bainite Micro Alloying Steel[J]. Special Steel, 2007, 28(3): 35-37.
DOI：

管丽, 刘雅政, 周乐育, et al. Effect of Cooling Rate on Structure Evolution of Hot Deformed Ferrite-Bainite Micro Alloying Steel[J]. Special Steel, 2007, 28(3): 35-37. DOI：

摘要

开发了0.06C-1.08Si-1.64Mn-0.30Mo-0.039Nb-0.01Ti铁素体-贝氏体微合金化(F+B)钢;用Gleeble.1500热模拟机测定了该实验钢在900℃变形50％后0.5～40℃／s冷却速度下的连续冷却转变曲线(CCT)

并分析了形变奥氏体的相变组织。结果表明

该钢的CCT曲线分为多边形铁素体转变区和贝氏体转变区两大部分

中间被奥氏体亚稳区隔开;当冷速≤2℃／s时

钢中出现多边形铁索体

当冷速≥5℃／s时

组织主要为粒状贝氏体和板条贝氏体。

Abstract

Ferrite-bainite(F+B)microalloying steel0.06C-1.08Si- 1.64Mn-0.30Mo-0.039Nb-0.01Ti has been developed; continuous cooling transformation(CCT)diagram of 50% deformed test steel at 900 ℃ and with cooling rate 0.5～40 ℃/s was obtained by Cleeble-1500 thermal simulator

and phase transformation structure of deformed austenite was analyzed. Results showed that the CCT diagram was composed of polygonal ferrite transformation region and bainite transformation region which were divided by metastable austenite region; as cooling rate was≤2 ℃/s

polygonal ferrite occurred in steel and as the cooling rate was ≥5 ℃/s

main structure in steel consisted of granular bainite and lath bainite.

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