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 ›› 2010, Vol. 31 ›› Issue (2): 48-50.

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A Study on Phase Transformation of X100 Pipeline Steel during Continuous Cooling

Zhou Ping1,2, Lan Liangyun1, Qiu Chunlin1, Li Sijun2, Gao Xiuhua1,  Liu Xianghua1   

  1. 1 State Key Lab of Rolling and Automation, Northeastern University, Shenyang 110004；
    2 Technical R & D Center, Laiwu Steel Group, Laiwu 271104
  • Received:2009-09-08 Online:2010-04-01 Published:2022-11-16

X100管线钢连续冷却相变研究

周平1,2, 兰亮云1, 邱春林1, 李四军2, 高秀华1, 刘相华1   

  1. 1东北大学轧制技术及连轧自动化国家重点实验室，沈阳110004；
    2莱芜钢铁集团有限公司技术研发中心，莱芜271104
  • 作者简介:周平(1973-),女，在读博士，高级工程师,1995年东北大学毕业，板带新产品和工艺开发。

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Abstract: The effect of cooling rate (0. 5 ~35℃/s) and strain (0. 3 ~ 0. 6) on structure of X100 pipeline steel (%： 0.06C, 0. 23Si, 1.90Mn, 0. 005P, 0.0003S, 0. 28 Mo, 0. 25 Ni, 0. 23 Cr, 0. 05 Nb, 0.02Ti, 0. 20Cu, 0. 025Al) has been studied by thermo-simulation test and the static and dynamic continuous cooling transformation (CCT) curves of the steel are obtained. Results show that complete bainite structure could be got at cooling rate of 5℃/s from un-deformed austenite； with deforming, the initial transformation temperature of austenite increases, and with increasing hot strain, the acicular ferrite transformation region enlarges while the lath bainite transformation region shrinks.

Key words: X100 Pipeline Steel, Continuous Cooling Transformation (CCT), Bainite, Acicular Ferrite

摘要： 通过热模拟试验研究了冷却速度(0.5～35℃/s)和变形量(0.3～0.6)对X100管线钢(%:0.06C、0.23Si、1.90Mn、0.005P、0.000 3S、0.28Mo、0.25 Ni、0.23Cr、0.05Nb、0.02Ti、0.20Cu、0.025Al)组织的影响,得出该钢的静态和动态连续冷却转变(CCT)曲线。结果表明,试验钢未变形奥氏体在5℃/s冷却速度可得到全部贝氏体组织;变形奥氏体相变开始温度升高,随热变形量增加,针状铁素体转变区扩大,板条贝氏体转变区缩小。

关键词: X100管线钢, 连续冷却转变(CCT), 贝氏体, 针状铁素体

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