Continuous Cooling Transformation Curves of H Beam Steel 0.11C-0. 25Si-1.50Mn-0.038Nb for Offshore Oil Platform

朱敏; 任安超; 徐光; 吉玉

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Continuous Cooling Transformation Curves of H Beam Steel 0.11C-0. 25Si-1.50Mn-0.038Nb for Offshore Oil Platform

更新时间：2026-01-21

- Continuous Cooling Transformation Curves of H Beam Steel 0.11C-0. 25Si-1.50Mn-0.038Nb for Offshore Oil Platform
- Special Steel Vol. 33, Issue 6, Pages: 36-38(2012)
- 作者机构：
  
  1. 武汉钢铁(集团)公司研究院.,武汉,430080
  2. 武汉科技大学材料与冶金学院,武汉,430081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：11 May 2012，
  
  Online First：29 September 2022，
  
  Published：29 September 2012
- 稿件说明：
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朱敏, 任安超, 徐光, et al. Continuous Cooling Transformation Curves of H Beam Steel 0.11C-0. 25Si-1.50Mn-0.038Nb for Offshore Oil Platform[J]. Special Steel, 2012, 33(6): 36-38.
DOI：

朱敏, 任安超, 徐光, et al. Continuous Cooling Transformation Curves of H Beam Steel 0.11C-0. 25Si-1.50Mn-0.038Nb for Offshore Oil Platform[J]. Special Steel, 2012, 33(6): 36-38. DOI：

摘要

试验用H型钢(/%:0.11C、0.25Si、1.50Mn、0.006S、0.012P、0.038Nb)由30 kg真空感应炉冶炼

并轧成15 mm钢板。通过Formastor-F热模拟机测定了H型钢在0.1～100℃/s的冷却速度下的膨胀曲线

结合金相法绘制出0.11C-0.25Si-1.50Mn-0.038Nb钢的连续冷却转变(CCT)曲线。得出当冷却速度≤10℃/s时获得铁索体+珠光体组织

当冷却速度≥20℃/s时得到上贝氏体组织

≥100℃/s时为马氏体+少量贝氏体。

Abstract

The test H beam steel (/% : 0. 11C

0. 25Si

1.50Mn

0. 006S

0. 012P

0. 038Nb) is melted by a 30 kg vacuum induction furnace and rolled to 15 mm plate. The continuous cooling transformation (CCT) curves of H-section steel 0. 11 C-0. 25Si，1. 50Mn-0. 038Nb are plotted by thermal dilatation curves at cooling rate 0. 1 ~ 100 ℃/s measured using Formastor-F hot simulation machine and combined with metallographic examination. It is obtained that with cooling rate ≤10 ℃

the steel has ferrite + pearlite structure

with cooling rate ≥20 ℃/s

the steel has upper bainite structure and with cooling rate 100 ℃/s

the structure of steel is martensite + minor bainite.

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