高强韧桥梁钢Q690q的单轴拉伸性能与低周疲劳性能

doi:10.13251/j.issn.0254-6051.2024.02.004

金属热处理 ›› 2024, Vol. 49 ›› Issue (2): 25-31.DOI: 10.13251/j.issn.0254-6051.2024.02.004

高强韧桥梁钢Q690q的单轴拉伸性能与低周疲劳性能

彭宁琦¹, 周文浩¹, 金东浩², 武会宾²

1.湖南华菱湘潭钢铁有限公司技术质量部, 湖南湘潭 411101;
2.北京科技大学钢铁共性技术协同创新中心, 北京 100083

收稿日期:2023-08-24 修回日期:2023-12-18 出版日期:2024-03-27 发布日期:2024-03-27
通讯作者: 武会宾,教授,博士,E-mail:whbustb@163.com
作者简介:彭宁琦(1981—),男,正高级工程师,博士,主要研究方向为钢铁热加工、热处理过程的组织和性能,E-mail:pengningqi@163.com。
基金资助:
长株潭国家自主创新示范区专项项目(2018XK2301)

Uniaxial tensile and low cycle fatigue properties of high strength and toughness bridge steel Q690q

Peng Ningqi¹, Zhou Wenhao¹, Jin Donghao², Wu Huibin²

1. Technology and Quality Department, Hunan Valin Xiangtan Iron and Steel Co., Ltd., Xiangtan Hunan 411101, China;
2. Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing 100083, China

Received:2023-08-24 Revised:2023-12-18 Online:2024-03-27 Published:2024-03-27

摘要/Abstract

摘要： 针对热机械轧制(TMCP)+回火(T)和调质(QT)两种工艺处理的Q690q桥梁钢板,进行了表面和心部的单轴拉伸和低周疲劳试验,同时利用光学显微镜和扫描电镜对表面和心部的微观组织及原始奥氏体晶粒尺寸进行了观察,并分析了其对拉伸性能和低周疲劳性能的影响。结果表明,TMCP+T工艺钢板的微观组织主要由板条贝氏体(LB)、粒状贝氏体(GB)和少量马奥岛(M/A)组成,表面的LB占大多数,且比心部的组织更加细小,同时原始奥氏体晶粒尺寸较均匀;与心部相比,表面的屈服强度、抗拉强度、屈强比及伸长率均增大,低周疲劳寿命明显提高。而QT工艺钢板的微观组织以回火索氏体(TS)和GB为主,心部的GB占比增加,但比表面的组织反而细小些,同时原始奥氏体晶粒也更为细小均匀;与表面相比,心部的屈服强度、抗拉强度、屈强比及伸长率均减小,但低周疲劳寿命反而提高。两种工艺相比,无论是表面还是心部,TMCP+T工艺钢板的屈服强度较低,抗拉强度较高,屈强比较低,同时伸长率较低。而两种工艺钢板的低周疲劳寿命变化范围极为接近,处理工艺对试验钢的低周疲劳性能影响不大。同时对拉伸性能与低周疲劳性能之间的相关性进行分析,表明疲劳强度系数与抗拉强度呈线性相关,疲劳延性系数与伸长率呈线性相关。

关键词: Q690q桥梁钢, 热机械轧制, 调质, 拉伸性能, 疲劳寿命

Abstract: For the Q690q bridge steel plates produced by two processes of thermo-mechanical control process+tempering (TMCP+T) and quenching and tempering (QT), the uniaxial tensile and low cycle fatigue (LCF) tests were conducted on the surface and core of the plates. The microstructure and the prior austenite grain sizes (PAGS) of the surface and core were observed and measured by means of optical microscope (OM) and scanning electron microscope (SEM), and their influences on the tensile properties and LCF properties were analyzed. The results show that the microstructure of the TMCP+T-processed steel mainly consists of lath bainite (LB), granular bainite (GB), and a small amount of martensite-austenite islands (M/A). The LB is the majority on the surface and is finer than that of the core, and the surface PAGS is also more uniform. Compared with that of the core, the yield strength, tensile strength, yield ratio, and elongation of the surface are all increased, and the LCF life is significantly improved. The microstructure of the QT-processed steel is mainly tempered sorbite (TS) and GB. The proportion of GB in the core is increased, but it is finer than that of the surface, and the PAGS is also finer and more uniform. Compared with that of the surface, the yield strength, tensile strength, elongation, and yield ratio of the core are all decreased, but the LCF life is increased. Comparison between the two processes, whether being the surface or the core, the TMCP+T-processed steel has lower yield strength, higher tensile strength, lower yield ratio, and lower elongation. However, the LCF life change ranges of the tested steel obtained by the two processes are very similar, implying that on which the process difference has a little effect. In addition, the correlation between the tensile properties and the LCF test data shows that the fatigue strength coefficient is linearly correlated to the tensile strength, and the fatigue ductility coefficient is linearly correlated to the elongation.

Key words: Q690q bridge steel, thermo-mechanical control process (TMCP), quenching and tempering, tensile properties, fatigue life

中图分类号:

TG142.1

彭宁琦, 周文浩, 金东浩, 武会宾. 高强韧桥梁钢Q690q的单轴拉伸性能与低周疲劳性能[J]. 金属热处理, 2024, 49(2): 25-31.

Peng Ningqi, Zhou Wenhao, Jin Donghao, Wu Huibin. Uniaxial tensile and low cycle fatigue properties of high strength and toughness bridge steel Q690q[J]. Heat Treatment of Metals, 2024, 49(2): 25-31.

参考文献

[1]毛新平, 武会宾, 汤启波. 我国桥梁结构钢的发展与创新[J]. 现代交通与冶金材料, 2021, 1(6): 1-5.
Mao Xinping, Wu Huibin, Tang Qibo. The development and innovation of bridge structural steel in China[J]. Modern Transportation and Metallurgical Materials, 2021, 1(6): 1-5.
[2]左照坤, 鞠晓晨, 赵欣欣, 等. 基于宽板拉伸试验的Q690qE高性能桥梁钢断裂韧性研究[J]. 桥梁建设, 2022, 52(1): 56-63.
Zuo Zhaokun, Ju Xiaochen, Zhao Xinxin, et al. Research on fracture toughness of Q690qE high performance bridge steel based on wide plate tensile test[J]. Bridge Construction, 2022, 52(1): 56-63.
[3]易伦雄, 袁毅, 彭最. 690 MPa级高性能桥梁钢工程应用[J]. 桥梁建设, 2021, 51(5): 14-19.
Yi Lunxiong, Yuan Yi, Peng Zui. Engineering application of 690 MPa high-performance bridge steel[J]. Bridge Construction, 2021, 51(5): 14-19.
[4]Collins W, Sherman R, Leon R, et al. Fracture toughness characterization of high-performance steel for bridge girder applications[J]. Journal of Materials in Civil Engineering, 2019, 31(4): 1-10.
[5]Miki C, Ichikawa A, Kusunoki T, et al. Proposal of new high performance steels for bridges (BHS500, BHS700)[J]. Doboku Gakkai Ronbunshu, 2003, 738: 1-10.
[6]Tewary N K, Kundu A, Nandi R, et al. Microstructural characterization and corrosion performance of old railway girder bridge steel and modern weathering structural steel[J]. Corrosion Science, 2016, 113: 57-63.
[7]Morozov Y D, Pemov I F, Matrosov M Y, et al. Steels for bridge structures[J]. Metallurgist, 2020, 63(12): 933-950.
[8]Cano H, Diaz I, Fuente D D L, et al. Effect of Cu, Cr and Ni alloying elements on mechanical properties and atmospheric corrosion resistance of weathering steels in marine atmospheres of different aggressivities[J]. Materials and Corrosion, 2018, 69(1): 8-19.
[9]Wang X M, Zhao A M, Liu S P, et al. The measurement of SH-CCT curve and analysis on microstructure and performance of heat-affected zone of Q690 high-strength bridge steel[J]. International Journal of Microstructure and Materials Properties, 2021, 15(5-6): 356-369.
[10]Huang W H, Yen H W, Lee Y L. Corrosion behavior and surface analysis of 690 MPa-grade offshore steels in chloride media[J]. Journal of Materials Research and Technology, 2019, 8(1): 1476-1485.
[11]彭宁琦, 付贵勤, 周文浩, 等. 高强韧耐候桥梁钢Q690qNH的防断选材及验收方法[J]. 钢铁, 2022, 57(3): 97-107.
Peng Ningqi, Fu Guiqin, Zhou Wenhao, et al. Material selection and acceptance of fracture resistance for high strength and toughness weather-resistant bridge steel of Q690qNH[J]. Iron and Steel, 2022, 57(3): 97-107.
[12]Karalar M, Dicleli M. Fatigue in jointless bridge H-piles under axial load and thermal movements[J]. Journal of Constructional Steel Research, 2018, 147: 504-522.
[13]Sim J H, Kim T Y, Kim J Y, et al. On the strengthening effects affecting tensile and low cycle fatigue properties of low-alloyed seismic/fire-resistant structural steels[J]. Metals and Materials International, 2020, 28(2): 1-9.
[14]陈建志. 贝氏体/马氏体复相EA4T钢微观组织与疲劳性能研究[D]. 沈阳: 东北大学, 2016.
Chen Jianzhi. Microstructures and fatigue properties of bainite/martensite EA4T steels[D]. Shenyang: Northeastern University, 2016.
[15]Kang J J, Zhang F C, Long X Y, et al. Low cycle fatigue behavior in a medium-carbon carbide-free bainitic steel[J]. Materials Science and Engineering A, 2016, 666: 88-93.
[16]Dai X, Peng T, Chen Y F, et al. The correlation between martensite-austenite islands evolution and fatigue behavior of SA508-IV steel[J]. International Journal of Fatigue, 2020, 139(8): 1-9.
[17]Zhou Q, Qian L, Meng J, et al. The fatigue properties, microstructural evolution and crack behaviors of low-carbon carbide-free bainitic steel during low-cycle fatigue[J]. Materials Science and Engineering A, 2021, 820: 1-12.
[18]Zhang P, Zhu Q, Chen G, et al. Grain size based low fatigue life prediction model for nickel-based superalloy[J]. Transactions of Nonferrous Metals Society of China, 2018, 28(10): 5-10.
[19]Ebara R. Grain size effect on low cycle fatigue behavior of high strength structural materials[J]. Solid State Phenomena, 2016, 258: 269-272.
[20]Shams S A A, Kim G, Won J W, et al. Effect of grain size on the low-cycle fatigue behavior of carbon-containing high-entropy alloys[J]. Materials Science and Engineering A, 2021, 810: 1-14.
[21]Pietro P M. Fatigue and Corrosion in Metals[M]. Italia: Springer, 2013.
[22]Zonfrillo G. New correlations between monotonic and cyclic properties of metallic materials[J]. Journal of Materials Engineering and Performance, 2017, 26(4): 1569-1580.
[23]Li C, Sun Q, Yang Y, et al. Theoretical estimation of fatigue crack initiation life for metallic materials[J]. Journal of Materials Engineering and Performance, 2013, 22(3): 655-663.
[24]Coffin L F J. A study of the effects of cyclic thermal stresses on a ductile metal[J]. Transaction of the ASME, 1954, 76: 931-950.
[25]Basan R, Franulovic M, Prebil I, et al. Study on Ramberg-Osgood and Chaboche models for 42CrMo4 steel and some approximations[J]. Journal of Constructional Steel Research, 2017, 136: 65-74.

高强韧桥梁钢Q690q的单轴拉伸性能与低周疲劳性能

Uniaxial tensile and low cycle fatigue properties of high strength and toughness bridge steel Q690q

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