终轧温度和卷取温度对V-Ti微合金化耐候钢组织与性能的影响

doi:10.13251/j.issn.0254-6051.2026.01.026

摘要/Abstract

摘要： 通过连续冷却热模拟试验和热轧试验,结合力学性能、低温冲击性能、显微组织和析出相的表征,研究了终轧温度和卷取温度对V-Ti微合金化耐候钢组织与性能的影响。结果表明:当终轧温度从880 ℃降低到830 ℃,试验钢的晶粒细化,(V, Ti)(C, N)析出相的体积分数和尺寸皆增加,使细晶强化增量提高、沉淀强化和固溶强化增量降低、韧性断裂强度提高,导致试验钢强度降低但低温冲击吸收能量提高;当卷取温度从600 ℃降低到550 ℃,试验钢的晶粒明显细化,(V, Ti)(C, N)析出相的体积分数和尺寸皆减小,使细晶强化增量提高、沉淀强化增量降低、固溶强化增量提高、韧性断裂强度提高,导致试验钢强度和低温冲击吸收能量提高;采用880 ℃的终轧温度和550 ℃的卷取温度时,试验钢可避免表面组织中铁素体晶粒异常长大,并实现最优的综合性能匹配,其中屈服强度、抗拉强度、断后伸长率和-80 ℃冲击吸收能量分别达到568 MPa、661 MPa、23.0%和142 J。

关键词: V-Ti微合金化, 耐候钢, 终轧温度, 卷取温度, 力学性能

Abstract: Through continuous cooling thermal simulation experiment and hot rolling test, combined with the characterization of mechanical properties, low temperature impact property, microstructure and precipitated phases, the effects of finishing rolling temperature and coiling temperature on the microstructure and properties of a V-Ti microalloyed weathering steel were investigated. The results show that when the finishing rolling temperature reduces from 880 ℃ to 830 ℃, the grains of the tested steel are refined, the volume fraction and size of (V, Ti)(C, N) precipitated phases increase, which result in an increase in grain refinement strengthening increment, a decrease in precipitation strengthening and solution strengthening increments, and an improvement in ductile fracture strength, resulting in a reduction in the strength of the tested steel but an increase in low-temperature impact absorbed energy. When the coiling temperature decreases from 600 ℃ to 550 ℃, the grains of the tested steel are significantly refined, and both the volume fraction and size of (V, Ti)(C, N) precipitated phases decrease. This causes an increase in grain refinement strengthening increment, a decrease in precipitation strengthening increment, an increase in solution strengthening increment, and an improvement in ductile fracture strength, leading to enhancements in both the strength and low-temperature impact absorbed energy of the tested steel. When a finish rolling temperature of 880 ℃ and a coiling temperature of 550 ℃ are adopted, the tested steel can avoid the abnormal growth of ferrite grains in the surface microstructure and achieve the optimal matching of comprehensive properties. The yield strength, tensile strength, elongation after fracture, and impact absorbed energy at -80 ℃ reach 568 MPa, 661 MPa, 23.0%, and 142 J, respectively.

Key words: V-Ti microalloying, weathering steel, finishing rolling temperature, coiling temperature, mechanical properties

中图分类号:

TG142.1

崔凯禹, 李正荣, 李海波, 陈述, 汪创伟, 熊雪刚, 刘一博. 终轧温度和卷取温度对V-Ti微合金化耐候钢组织与性能的影响[J]. 金属热处理, 2026, 51(1): 179-188.

Cui Kaiyu, Li Zhengrong, Li Haibo, Chen Shu, Wang Chuangwei, Xiong Xuegang, Liu Yibo. Effects of finishing rolling temperature and coiling temperature on microstructure and properties of V-Ti microalloyed weathering steel[J]. Heat Treatment of Metals, 2026, 51(1): 179-188.

参考文献

[1] Zhang Xu, Yang Shanwu, Guo Hui, et al. Atmospheric corrosion behavior of weathering steel in periodically changed environment[J]. ISIJ International, 2014, 54(4): 909-915.
[2] 林鹏飞, 杨忠民, 陈颖, 等. 耐候钢锈层及其稳定化处理现状[J]. 钢铁, 2021, 56(3): 58-65.
Lin Pengfei, Yang Zhongmin, Chen Ying, et al. Rust layer of weathering steel and its stabilization treatment status[J]. Iron and Steel, 2021, 56(3): 58-65.
[3] 崔凯禹. 提高Q550NQRl耐候钢-40 ℃冲击功的工艺实践[J]. 特殊钢, 2018, 39(5): 54-57.
Cui Kaiyu. Technology practice of increasing impact energy of weathering steel Q550NQR1 at -40 ℃[J]. Special Steel, 2018, 39(5): 54-57.
[4] 付天乐, 沙莎, 汪兵, 等. 控轧控冷工艺对3.5%Ni耐候钢组织与性能的影响[J]. 金属热处理, 2025, 50(7): 204-211.
Fu Tianle, Sha Sha, Wang Bing, et al. Effect of thermomechanical control process on microstructure and properties of weathering steel containing 3.5%Ni[J]. Heat Treatment of Metals, 2025, 50(7): 204-211.
[5] 彭宁琦, 何航, 罗登, 等. 高强韧耐候桥梁钢Q500qENH的生产工艺[J]. 金属热处理, 2021, 46(8): 139-144.
Peng Ningqi, He Hang, Luo Deng, et al. Production process of high strength and toughness weather-resistant bridge steel Q500qENH[J]. Heat Treatment of Metals, 2021, 46(8): 139-144.
[6] 汪创伟. 含钒高强度耐候钢板Q450NQR1开发[J]. 钢铁钒钛, 2018, 39(3): 129-133.
Wang Chuangwei. Development of high strength weathering steel Q450NQR1 containing vanadium[J]. Iron Steel Vanadium Titanium, 2018, 39(3): 129-133.
[7] 周聪, 张晨洋, 李运鑫, 等. Ti微合金化700 MPa级集装箱用耐候钢的组织性能[J]. 材料热处理学报, 2020, 41(7): 126-133.
Zhou Cong, Zhang Chenyang, Li Yunxin, et al. Microstructure and properties of Ti microalloyed 700 MPa weathering steel for container[J]. Transactions of Materials and Heat Treatment, 2020, 41(7): 126-133.
[8] 杨栋杰, 冯奕洁, 张宁, 等. 微合金耐候钢的连续冷却转变及轧制温度对其组织与硬度的影响[J]. 金属热处理, 2025, 50(6): 18-26.
Yang Dongjie, Feng Yijie, Zhang Ning, et al. Continuous cooling transformation of microalloyed weathering steel and effect of rolling temperature on its microstructure and hardness[J]. Heat Treatment of Metals, 2025, 50(6): 18-26.
[9] 刘丽萍, 关晓光. 700 MPa级高强汽车用钢热轧工艺研究与应用[J]. 轧钢, 2018, 35(2): 20-25.
Liu Liping, Guan Xiaoguang. Research and application of hot rolling technology for production 700 MPa high strength automobile steel[J]. Steel Rolling, 2018, 35(2): 20-25.
[10] 衣海龙, 龙雷周, 刘振宇, 等. Mo-Ti微合化热轧高强钢的组织与性能[J]. 材料热处理学报, 2015, 36(12): 145-151.
Yi Hailong, Long Leizhou, Liu Zhenyu, et al. Microstructure and mechanical properties of hot rolled Mo-Ti microalloyed high strength steel[J]. Transactions of Materials and Heat Treatment, 2015, 36(12): 145-151.
[11] 陈俊, 吕梦阳, 唐帅, 等. V-Ti微合金钢的组织性能及相间析出行为[J]. 金属学报, 2014, 50(5): 524-530.
Chen Jun, Lü Mengyang, Tang Shuai, et al. Microstructure, mechanical properties and interphase precipitation behaviors in V-Ti microalloyed steel[J]. Acta Metallurgica Sinica, 2014, 50(5): 524-530.
[12] 杨庚蔚, 陆佳伟, 孙辉, 等. Ti-V微合金化热轧高强钢的相变规律及组织性能[J]. 钢铁研究学报, 2019, 31(8): 726-732.
Yang Gengwei, Lu Jiawei, Sun Hui, et al. Microstructure, mechanical properties and phase transformation behavior of Ti-V microalloyed high-strength hot-strip steel[J]. Journal of Iron and Steel Research, 2019, 31(8): 726-732.
[13] 陈子豪, 张可, 付锡彬, 等. V含量对Ti-V复合微合金钢组织和力学性能的影响[J]. 过程工程学报, 2021, 21(7): 827-835.
Chen Zihao, Zhang Ke, Fu Xibin, et al. Effect of V content on microstructure and mechanical properties of Ti-V complex microalloyed steel[J]. The Chinese Journal of Process Engineering, 2021, 21(7): 827-835.
[14] 张金城, 孙胜辉, 蔡明晖, 等. 控轧控冷对Ti-Mo-Nb复合微合金化低碳钢组织和力学性能的影响[J]. 金属热处理, 2023, 48(1): 155-162.
Zhang Jincheng, Sun Shenghui, Cai Minghui, et al. Effect of TMCP on microstructure and mechanical properties of Ti-Mo-Nb microalloyed low carbon steel[J]. Heat Treatment of Metals, 2023, 48(1): 155-162.
[15] 王丽. 终轧温度和卷取温度对Ti-V微合金钢组织及析出物的影响[J]. 材料与冶金学报, 2024, 23(6): 577-584.
Wang Li. Effects of finishing and coiling temperatures on microstructure and precipitate of Ti-V micro-alloyed steel[J]. Journal of Materials and Metallurgy, 2024, 23(6): 577-584.
[16] Zheng Y X, Chu S K, Yang Q, et al. Microstructural evolution and carbides precipitation behavior and their effects on mechanical property of Nb-Ti microalloyed FB590 steel[J]. Materials Science and Engineering: A, 2024, 902: 146613.
[17] Zhou F, Liu L, Chu X H, et al. Study on the evolution of multistage and multiscale Ti-bearing precipitation and microstructure in ultra high-strength titanium microalloyed weathering steels[J]. Materials Characterization, 2024, 217: 114368.
[18] Ooi S W, Fourlaris G. A comparative study of precipitation effects in Ti only and Ti-V ultra low carbon (ULC) strip steels[J]. Materials Characterization, 2006, 56(3): 214-226.
[19] 李桂艳, 时晓光, 赵宝纯, 等. 热变形对DP600汽车用钢连续冷却转变曲线的影响[J]. 材料科学与工程学报, 2009, 27(2): 219-221, 287.
Li Guiyan, Shi Xiaoguang, Zhao Baochun, et al. Effect of the hot deformation on continuous cooling transformation curve for DP600 steels[J]. Journal of Materials Science and Engineering, 2009, 27(2): 219-221, 287.
[20] 王云龙, 陈银莉, 余伟. 不同形变条件下非调质钢45 MnSiVSQ的连续冷却转变[J]. 金属热处理, 2020, 45(12): 13-18.
Wang Yunlong, Chen Yinli, Yu Wei. Continuous cooling transformation of non-quenched and tempered 45MnSiVSQ steel under different deformation conditions[J]. Heat Treatment of Metals, 2020, 45(12): 13-18.
[21] 宋思颖, 田俊羽, 樊雷, 等. 高性能建筑结构用钢Q460的动态和静态CCT曲线研究[J]. 武汉科技大学学报, 2021, 44(6): 406-414.
Song Siying, Tian Junyu, Fan Lei, et al. Dynamic and static CCT curves of Q460 steel used for high performance building[J]. Journal of Wuhan University of Science and Technology, 2021, 44(6): 406-414.
[22] 陈麒琳, 孙新军. Mn含量及卷取温度对TSCR流程生产Ti微合金高强钢组织与力学性能的影响[J]. 武汉科技大学学报, 2016, 39(3): 161-165.
Chen Qilin, Sun Xinjun. Effect of Mn content and coiling temperature on the microstructure and mechanical properties of Ti-microalloyed high-strength steel produced by TSCR process[J]. Journal of Wuhan University of Science and Technology, 2016, 39(3): 161-165.
[23] 李显, 杨跃标, 叶姜, 等. 热轧低碳铝镇静钢表层粗晶缺陷原因分析及控制措施[J]. 轧钢, 2020, 37(5): 25-29.
Li Xian, Yang Yuebiao, Ye Jiang, et al. Causes analysis and control measures of coarse grain defects on the surface of hot rolled low-carbon aluminum killed steel strip[J]. Steel Rolling, 2020, 37(5): 25-29.
[24] 任长春, 裴新华. 边部组织状态对低碳热轧酸洗板冲压成形的影响[J]. 锻压技术, 2012, 37(5): 133-136.
Ren Changchun, Pei Xinhua. Effect of edge microstructure characteristic on formability of low carbon pickled steel sheet[J]. Forging ＆ Stamping Technology, 2012, 37(5): 133-136.
[25] 裴新华, 龚志辉. 热轧酸洗板深拉深成形凸耳形成因素研究[J]. 热加工工艺, 2014, 43(3): 88-91.
Pei Xinhua, Gong Zhihui. Research on earing forming factor of hot rolled pickling plate in deep drawing[J]. Hot Working Technology, 2014, 43(3): 88-91.
[26] 崔凯禹, 李正荣, 刘序江, 等. 终轧温度对压缩机用热轧酸洗板成形性能的影响[C]//第十三届中国钢铁年会论文集. 重庆: 中国金属学会, 2022: 7.
Cui Kaiyu, Li Zhengrong, Liu Xujiang, et al. Effect of finishing temperature on forming properties of hot rolled pickling steel plate for compressor[C]//Proceedings of the 13^th CSM Steel Congress. Chongqing: The Chinese Society for Metals, 2022: 7.
[27] 雍岐龙. 钢铁材料中的第二相[M]. 北京: 冶金工业出版社, 2006.
[28] Shi Z R, Wang R Z, Su H, et al. Effect of nitrogen content on the second phase particles in V-Ti microalloyed shipbuilding steel during weld thermal cycling[J]. Materials and Design, 2016, 96(15): 241-250.
[29] Singh P P, Ghosh S, Mula S. Strengthening behaviour and failure analysis of hot-rolled Nb+V microalloyed steel processed at various coiling temperatures[J]. Materials Science and Engineering A, 2022, 859: 144210.
[30] Hall E O. The deformation and aging of mild steel: ⅢDiscussion of results[J]. Proceedings of the Physical Society, Section B, 1951, 64(9): 747-753.
[31] Petch N J. The cleavage strength of polycrystals[J]. Journal of the Iron and Steel Institute, 1953, 174: 25-28.
[32] 王鹏飞. 高强度低合金Q390钢TMCP工艺研究[D]. 沈阳: 东北大学, 2008.
Wang Pengfei. Research on TMCP process of a grade Q390 type HSLA steel plate[D]. Shenyang: Northeastern University, 2008.