ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2012, Vol. 33 ›› Issue (6): 36-38.

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

Zhu Min1 , Ren Anchao1 , Xu Guang2，Ji Yu1   

  1. 1 Research and Development Center, Wuhan Iron and Steel (Group) Corp, Wuhan 430080；
    2 School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081
  • Received:2012-05-11 Online:2012-12-01 Published:2022-09-29

海洋石油平台用 H 型钢 0.11C-0.25Si-1.50Mn-0.038Nb 连续冷却转变曲线

朱敏1，任安超1，徐光2，吉玉1   

  1. 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:朱敏(1981-),男，硕士，工程师,东北大学毕业，型钢新品种开发。

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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.

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。

关键词: 海洋平台, H型钢0. 11C-0. 25Si-1.50Mn-0.038Nb, CCT曲线

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