轧制工艺对460 MPa级低屈强比耐火耐候钢组织性能的影响

doi:10.13251/j.issn.0254-6051.2020.09.011

金属热处理 ›› 2020, Vol. 45 ›› Issue (9): 66-70.DOI: 10.13251/j.issn.0254-6051.2020.09.011

轧制工艺对460 MPa级低屈强比耐火耐候钢组织性能的影响

马龙腾¹, 王彦锋¹, 杨永达¹, 韩承良², 马长文¹, 田志红¹

1.首钢集团有限公司技术研究院,北京 100043;
2.首钢京唐钢铁联合有限责任公司,河北唐山 063210

收稿日期:2020-03-27 出版日期:2020-09-25 发布日期:2020-12-29
作者简介:马龙腾(1988—),男,工程师,博士,主要研究方向为金属材料组织与性能控制,E-mail:m_l_t_@msn.com
基金资助:
国家重点研发计划(2017YFB0304703)

Effect of rolling parameters on microstructure and mechanical properties of 460 MPa grade low yield ratio fire-resistant weathering steel

Ma Longteng¹, Wang Yanfeng¹, Yang Yongda¹, Han Chengliang², Ma Changwen¹, Tian Zhihong¹

1. Research Institute of Technology,Shougang Group,Beijing 100043,China;
2. Shougang Jingtang United Iron & Steel Co.,Ltd.,Tangshan Hebei 063210,China

Received:2020-03-27 Online:2020-09-25 Published:2020-12-29

摘要/Abstract

摘要： 利用热模拟方法测定低屈强比耐火耐候钢不同速率冷却后的组织。对比轧后弛豫工艺与未弛豫工艺以及终冷温度对试验钢性能的影响,利用光学显微镜、扫描电镜、透射电镜分析不同工艺对钢轧后显微组织的影响。结果表明,随冷却速度的增加,钢板组织由多边形铁素体变为针状铁素体+粒状贝氏体复相组织;由于弛豫处理过程中过冷奥氏体部分转变为多边形铁素体,钢板屈服强度和屈强比均下降;随着终冷温度的降低,钢板的屈服强度和屈强比上升,与钢中针状铁素体的细化与M/A组元的弥散强化有关;轧后直接水冷,并控制终冷温度至500~560 ℃,可获得高强度与低屈强比的良好匹配。

关键词: 低屈强比耐火耐候钢, 弛豫, 热模拟, 终冷温度, M/A

Abstract: Microstructure of low yield ratio fire-resistant weathering steel after cooling at different rates was determined by thermal simulation method.By comparing the effects of post-rolling relaxing process or not and final cooling temperature after hot rolling on mechanical properties of the steel,the effect of different processes on microstructure was investigated by using OM,SEM and TEM.The results show that with cooling rate increasing,the microstructure of the steel plates changes from polygonal ferrite to (acicular ferrite+granular bainite) duplex microstructure.Due to the transformation of undercooled austenite into polygonal ferrite during relaxation treatment,the yield strength and yield ratio of the steel plates decrease.With the decrease of final cooling temperature,the yield strength and yield ratio of the steel plates increase,which is due to the refinement of acicular ferrite and the dispersion strengthening of M/A constituent.Good match of high strength and low yield ratio of the steel plates are successfully achieved by the combination of direct water-cooling after hot rolling and controlled final cooling temperature between 500 ℃ to 560 ℃.

Key words: low yield ratio fire-resistant and weathering steel, relaxing, thermo-mechanical simulation, final cooling temperature, M/A

中图分类号:

TG335

马龙腾, 王彦锋, 杨永达, 韩承良, 马长文, 田志红. 轧制工艺对460 MPa级低屈强比耐火耐候钢组织性能的影响[J]. 金属热处理, 2020, 45(9): 66-70.

Ma Longteng, Wang Yanfeng, Yang Yongda, Han Chengliang, Ma Changwen, Tian Zhihong. Effect of rolling parameters on microstructure and mechanical properties of 460 MPa grade low yield ratio fire-resistant weathering steel[J]. Heat Treatment of Metals, 2020, 45(9): 66-70.

参考文献

[1] 王道美,邓伟,崔强.建筑用耐火钢的研究现状及发展趋势[J].山东冶金,2014,36(5):5-8.
Wang Daomei,Deng Wei,Cui Qiang.Research situation and development trend of fire-resistant steel for building structure[J].Shandong Metallurgy,2014,36(5):5-8.
[2] 黄磊.高强耐火钢组织与性能的研究[D].沈阳:东北大学,2010.
Huang Lei.Research on microstructure and performance of high-strength fire-resistant steel[D].Shenyang:Northeastern University,2010.
[3] 甄毅.钢结构防腐及耐候钢在建筑工程中的应用[J].工程设计与建设,2005,37(1):41-44.
Zhen Yi.Corrosion resistance of steel structure &application of weathering steels in building projects[J].Engineering Design and Construction,2005,37(1):41-44.
[4] 王建军,郑文龙,陈家光,等.表面涂层改性技术在提高耐候钢抗海洋性大气腐蚀中的应用[J].腐蚀与防护,2004,25(2):53-56.
Wang Jianjun,Zheng Wenlong,Chen Jiaguang,et al.Application of coating on weathering steel to resist marine atmosphere corrosion[J].Corrosion and Protection,2004,25(2):53-56.
[5] 奚卫裔.耐候性钢材及其在建筑结构中的应用[J].建筑施工,1998(5):31-32.
Xi Weiyi.Weathering steels and their application on construction structure[J].Building Construction,1998(5):31-32.
[6] 王锋.建筑用抗震钢板的控轧控冷工艺与性能研究[J].热加工工艺,2018,47(11):124-127.
Wang Feng.Study on controlled rolling and cooling process and performance of aseismatic steel plate for building[J].Hot Working Technology,2018,47(11):124-127.
[7] 张莉芹,童明伟,吴开明.屈服强度550 MPa级抗震建筑用钢回火性能研究[J].钢铁钒钛,2017,38(3):124-129.
Zhang Liqin,Tong Mingwei,Wu Kaiming.Research on tempering performance of seismic steel with yield strength 550 MPa[J].Iron Steel Vanadium Titanium,2017,38(3):124-129.
[8] 李春智,马龙腾,田志红,等.高性能Q460耐火耐候结构用钢的研发[J].中国冶金,2018,28(7):19-23.
Li Chunzhi,Ma Longteng,Tian Zhihong,et al.Research of high performance Q460 structural steel with fire resistant and weather resistant[J].China Metallurgy,2018,28(7):19-23.
[9] 徐纪人,赵志新.南北地震带南段地震构造运动特征[J].地球物理学进展,2017,32(3):1059-1066.
Xu Jiren,Zhao Zhixin.Seismo-tectonic motions in the southern segment of the north-south seismic belt[J].Progress in Geophysics,2017,32(3):1059-1066.
[10] 韩建强,丁祖贤,张玉敏.消能减震及软钢阻尼器的研究与应用综述[J].建筑科学与工程学报,2018,35(5):60-69.
Han Jianqiang,Ding Zuxian,Zhang Yumin.Summary of research and application of energy dissipation and mild steel damper[J].Journal of Architecture and Civil Engineering,2018,35(5):60-69.
[11] 万泽青,刘平.低屈服点钢在结构耗能减震中的应用[J].钢结构,2010,25(2):35-38.
Wan Zeqing,Liu Ping.Application of low yield point steel in structural energy dissipation[J].Steel Construction,2010,25(2):35-38.
[12] Zhang M X,Kelly P M.Accurate orientation relationship between ferrite and austenite in low carbon martensite and granular bainite[J].Scripta Materialia,2002,47(11):749-755.
[13] Zhao M C,Yang K,Shan Y.The effects of thermo-mechanical control process on microstructures and mechanical properties of a commercial pipeline steel[J].Materials Science and Engineering A,2002,335(1):14-20.
[14] Liu Y,Zhu F,Li Y,et al.Effect of TMCP parameters on the microstructure and properties of an Nb-Ti microalloyed steel[J].ISIJ International,2005,45(6):851-857.

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轧制工艺对460 MPa级低屈强比耐火耐候钢组织性能的影响

Effect of rolling parameters on microstructure and mechanical properties of 460 MPa grade low yield ratio fire-resistant weathering steel

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