TMCP Simulation for Hot Rolling of P91 Seamless Steel Pipe

doi:10.11901/1005.3093.2019.258

Chinese Journal of Materials Research

2019, Vol. 33

Issue (12): 909-917 DOI: 10.11901/1005.3093.2019.258

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TMCP Simulation for Hot Rolling of P91 Seamless Steel Pipe

Xiaodong WANG^1,²,Feng GUO¹(

),Xirong BAO³,Baofeng WANG³

1. School of Materials Science & Engineering, Inner Mongolia University of Technology, Hohhot 010051, China
2. School of Mining & Coal, Inner Mongolia University of Science & Technology, Baotou 014010, China
3. School of Material & Metallurgy, Inner Mongolia University of Science & Technology, Baotou 014010, China

Cite this article:

Xiaodong WANG,Feng GUO,Xirong BAO,Baofeng WANG. TMCP Simulation for Hot Rolling of P91 Seamless Steel Pipe. Chinese Journal of Materials Research, 2019, 33(12): 909-917.

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Abstract

The thermal mechanical control processing (TMCP) for hot-rolling of P91 seamless steel pipe was designed based on the features of PQF process and the relevant research results of its dynamic phase transition regularities. Then the hot deformation processes for piercing, continuous rolling and sizing of P91 pipe were simulated by means of Gleeble-1500D thermal-mechanical simulator. Whilst the microstructural evolution of P91 pipe during TMCP was assessed by SEM and TEM, and the refinement and strengthening of deformed austenite and its martensitic transformation behavior were also investigated. The results show that the large deformation at higher temperature with true strain of 1.8 during piercing and continuous rolling may benefit the recrystallization and the refinement of deformed austenite grains, while the accumulation of sizing deformation at 990℃ may strengthen the deformed austenite and induce the martensitic transformation during the TMCP of P91 pipe. Martensite laths with a thickness of 0.1~0.5 μm were obtained via proper controlled cooling of 1℃/s. Fine twins of 2~20 nm and high density dislocations were found in Martensite laths. The nanoscale precipitates of (Cr,Fe,Mo)₂₃C₆ with a size of about 20 nm×100 nm were found between the laths of the martensite. This structure characteristic is the imprint of the TMCP effect of fine grain strengthening, precipitation strengthening and phasetransformation strengthening, which can greatly improve the mechanical properties of P91 pipe. The feasibility of TMCP for P91 pipe was verified by the actual production.

Key words: metallic materials TMCP experimental simulation P91 deformation phase transition

Received: 20 May 2019

ZTFLH:

TG335.71

Fund: National Natural Science Foundation of China(51461034);Inner Mongolia Natural Science Foundation(2014MS0532);Innovation Foundation of Inner Mongolia University of Science & Technology(2014QDL036)

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	Xiaodong WANG
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https://www.cjmr.org/EN/10.11901/1005.3093.2019.258 OR https://www.cjmr.org/EN/Y2019/V33/I12/909

Table 1 Chemical composition of P91 (mass fraction, %)

Table 2 TMCP parameters of piercing, PQF continuous rolling and sizing of P91 pipe

Fig.1 Thermal expansion curves of P91 steel under different deformation conditions (cooling rate is 1℃/s) (a) 1040℃, ε=0, (b) 1040℃, ε=0.2, (c) 990℃, ε=0.2

Fig.2 SEM microstructures of P91 under different deformation and cooling conditions (a) 1040℃, ε=0, cooling rate=0.5℃/s, (b) 1040℃, ε=0.2, cooling rate=0.5℃/s, (c) 990℃, ε=0.2, cooling rate=0.5℃/s, (d) 990℃, ε=0.2, cooling rate=1℃/s

Fig.3 True stress-true strain curve of (a) piercing, continuous rolling and sizing, (b) continuous rolling and sizing (magnification) of P91 TMCP

Fig.4 Microstructures of the P91 TMCP after piercing, continuous rolling and sizing (a) quenching after piercing, (b) quenching after continuous rolling, (c) cooling at 0.5℃/s after sizing, (d) cooling at 1℃/s after sizing

Fig.5 SEM microstructures of the P91 steel in the TMCP controlled cooling after sizing (a) 0.5℃/s, (b) 1℃/s

Fig.6 The substructure and precipitates of the P91 steel at the TMCP controlled cooling rate of 1℃/s after sizing (a) martensite laths and dislocations, (b) twins, (c) precipitates, (d) EDS of precipitates

Fig.7 Thermo-Calc calculation of (a) carbide precipitation curve and (b) M₂₃C₆ component curve of P91 Steel

Table 3 Atom ratio of each element in carbide precipitate M₂₃C₆ of P91 (atomic fraction, %)

Fig.8 Product and microstructures of the P91 pipe in TMCP production (a) product (b) OM, (c) martensite laths and dislocations (TEM), (d) twins and precipitates (TEM)

[1]	Wang X F, Wu R D, Deng C X, et al. Mechanical properties of new heat-resistant high-tensile steel P91 at high temperature [J]. Chin. J. Mech. Eng., 2008, 44(6): 243
[1]	(王雪凤, 吴任东, 邓晨曦等. 新型耐热高强钢P91的高温力学性能 [J]. 机械工程学报, 2008, 44(6): 243)
[2]	Zhu F X, Liu C, Chui G Z, et al. Effect of hot deformation parameters on recrystallization of steel T91 [J]. Acta Metall. Sin. (Eng. Lett.), 2000, 13(1: 335
[3]	Ning B Q, Liu Y C, Xu R L, et al. Effects of thermomechanical treatment on microstructure and mechanical properties of T91 steel [J]. Chin. J. Mater. Res., 2008, 22(2): 191
[3]	(宁保群, 刘永长, 徐荣雷等. 形变热处理对T91钢组织和性能的影响 [J]. 材料研究学报, 2008, 22(2): 191)
[4]	Lee Y, Kim S I, Choi S, et al. Mathematical model to simulate thermo-mechanical controlled processing in rod (or bar) rolling [J]. Met. Mater. Int., 2001, 7: 519
[5]	Xue X H, Shan Y Y, Zheng L, et al. Microstructural characteristic of low carbon microalloyed steels produced by thermo-mechanical controlled process [J]. Mater. Sci. Eng., 2006, 438-440A: 285
[6]	Kong X W, Lan L Y, Hu Z Y, et al. Optimization of mechanical properties of high strength bainitic steel using thermo-mechanical control and accelerated cooling process [J]. J. Mater. Process. Technol., 2015, 217: 202
[7]	Wang G D. Development of TMCP and envisaged application to steel tube rolling [J]. Steel Pipe, 2011, 40(2): 1
[7]	(王国栋. 控轧控冷技术的发展及在钢管轧制中应用的设想 [J]. 钢管, 2011, 40(2): 1)
[8]	Peng L Z, Chen L M, Du X L, et al. A brief analysis on application of TMCP to seamless steel tube production [J]. Steel Pipe, 2013, 42(4): 7
[8]	(彭龙洲, 陈利明, 杜新立等. 简析控轧控冷技术在无缝钢管生产中的应用 [J]. 钢管, 2013, 42(4): 7)
[9]	Lv W D, Cheng J F, Tang G B. Development of controlled cooling technology and its application for hot rolled steel pipe [J]. Shanghai Met., 2015, 37(2): 45
[9]	(吕卫东, 程杰锋, 唐广波. 控制冷却技术的发展及其在热轧钢管过程的应用 [J]. 上海金属, 2015, 37(2): 45)
[10]	Wang X D, Guo F, Bao X R, et al. Application and research of thermo-mechanical control process for steel tube rolling [J]. Hot Work. Technol., 2016, 46(15): 20
[10]	(王晓东, 郭锋, 包喜荣等. 钢管轧制热机械控制工艺的应用与研究 [J]. 热加工工艺, 2016, 46(15): 20)
[11]	The Timken Company. Controlled thermo-mechanical processing of tubes and pipes for enhanced manufacturing and performance [R]. Canton: The Timken Company, 2005
[12]	Jin D, Dominik E D, Kolarik II R V, et al. Modeling of controlled thermo-mechanical processing of tubes for enhanced manufacturing and performance [J]. Acta Metall. Sin. (Eng. Lett.), 2000, 13(2: 832
[13]	Anelli E, Cumino G, Gonalez C. Metallurgical design of accelerated-cooling process for seamless pipe production [A]. Proceedings from Materials Solutions’97 on Accelerated Cooling/Direct Quen-ching of Steels [C]. Indiana, 1997
[14]	Wang X D, Bao X R, Guo F, et al. Simulated research on recrystallization controlled rolling of P110 oil casing [J]. Hot Work. Technol., 2013, 43(3): 47
[14]	(王晓东, 包喜荣, 郭锋等. P110钢级石油套管再结晶型控制轧制模拟研究 [J]. 热加工工艺, 2013, 43(3): 47)
[15]	Wang X D, Guo F, Bao X R, et al. Research on TMCP in the rolling of 30MnCr22 seamless pipe based on PQF [J]. Trans. Mater. Heat Treat., 2015, 36(Suppl.2): 57
[15]	(王晓东, 郭锋, 包喜荣等. 基于PQF的30MnCr22无缝钢管TMCP的实验研究 [J]. 材料热处理学报, 2015, 36(Suppl.2): 57)
[16]	Wang X D, Guo F, Wang B F, et al. Establishment of a full scale physical simulation platform for controlled cooling of steel tubes and research on heat transfer boundary conditions [J]. J. Mech. Eng., 2018, 54(24): 69
[16]	(王晓东, 郭锋, 王宝峰等. 钢管控制冷却物理模拟平台的建立及传热边界条件的确定 [J]. 机械工程学报, 2018, 54 (24): 69)
[17]	Wang Y M, Li M Y, Wei G. Controlled Rolling and Controlled Cooling of Steel 2nd ed. [M]. Beijing: Metallurgical Industry Press, 2009
[17]	(王有铭, 李曼云, 韦光. 钢材的控制轧制和控制冷却. 第2版. [M]. 北京: 冶金工业出版, 2009)
[18]	Yu W, Chen Y L, Chen Y L, et al. On-line thermomechanical treatment process for N-80 grade oil casing [J]. J. Univ. Sci. Technol. Beijing, 2002, 24: 643
[18]	(余伟, 陈银莉, 陈雨来等. N80级石油套管在线形变热处理工艺 [J]. 北京科技大学学报, 2002, 24: 643)
[19]	Liu Y Z, Liu Z, Xu J Q, et al. Experimental study on optimization of rolling process for non-quenched and tempered N80 oil casings [J]. Iron Steel, 2006, 41(7): 41
[19]	(刘雅政, 刘照, 徐进桥等. 非调质N80石油套管轧制工艺优化的实验研究 [J]. 钢铁, 2006, 41(7): 41)
[20]	Tao X Z, Zhao Y H, Liu D S, et al. On-line heat treatment process for steel pipe with water quenching [J]. Steel Pipe, 2006, 35(2): 21
[20]	(陶学智, 赵永恒, 刘东升等. 钢管在线水淬热处理工艺 [J]. 钢管, 2006, 35(2): 21)
[21]	He Y Z, Chen D H, Lei T Q, et al. Mathematical modeling of the dependence of grain size on zener-hollomon parameter during dynamic recrystallization [J]. J. Iron Steel Res., 2000, 12: 26
[21]	(何宜柱, 陈大宏, 雷廷权等. 形变Z因子与动态再结晶晶粒尺寸间的理论模型 [J]. 钢铁研究学报, 2000, 12: 26)
[22]	Zhang H B, Zhang B, Liu J T. Dynamics measurement and mathematical models of dynamic recrystallization of steel [J]. J. Shanghai Jiaotong Univ., 2003, 37: 1053
[22]	(张鸿冰, 张斌, 柳建韬. 钢中动态再结晶力学测定及其数学模型 [J]. 上海交通大学学报, 2003, 37: 1053)
[23]	Zhang B, Zhang H B, Ruan X Y. Dynamic recrystallization behavior of 35CrMo structural steel [J]. J. Cent. South Univ. Technol., 2003, 10: 13
[24]	Han B J. Research on the grain ultra-refinement in Austenite by dynamic recrystallization in austenite and its martensitic transformation [D]. Shanghai: Shanghai Jiaotong University, 2008
[24]	(韩宝军. 奥氏体动态再结晶晶粒超细化及其马氏体相变研究 [D]. 上海: 上海交通大学, 2008)

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