海工用低合金高强钢厚板的组织与力学性能

doi:10.13251/j.issn.0254-6051.2023.10.005

金属热处理 ›› 2023, Vol. 48 ›› Issue (10): 37-44.DOI: 10.13251/j.issn.0254-6051.2023.10.005

海工用低合金高强钢厚板的组织与力学性能

崔树刚^1,2, 史长鑫^1,2, 谷国超^1,2, 许文花^1,2, 吕宇鹏^1,2

1.山东大学材料科学与工程学院, 山东济南 250061;
2.山东大学材料液固结构演变与加工教育部重点实验室, 山东济南 250061

收稿日期:2023-08-14 修回日期:2023-09-11 出版日期:2023-10-25 发布日期:2023-12-07
通讯作者: 吕宇鹏,教授,博士生导师,E-mail:biosdu@sdu.edu.cn
作者简介:崔树刚(1998—),男,博士研究生,主要研究方向为金属材料热处理,E-mail:cuishugang@mail.sdu.edu.cn。
基金资助:
山东省重点研发(重大创新工程)项目(2020CXGC010305,2021ZLGX01);国家自然科学基金重点项目(52233018)

Microstructure and mechanical properties of high strength low alloy thick steel plates for offshore engineering

Cui Shugang^1,2, Shi Changxin^1,2, Gu Guochao^1,2, Xu Wenhua^1,2, Lü Yupeng^1,2

1. School of Materials Science and Engineering, Shandong University, Jinan Shandong 250061, China;
2. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan Shandong 250061, China

Received:2023-08-14 Revised:2023-09-11 Online:2023-10-25 Published:2023-12-07

摘要/Abstract

摘要： 采用TMCP后600 ℃回火的工艺生产了厚度为80 mm的420 MPa级高强度低合金宽厚板,利用光学显微镜、扫描电镜、电子背散射衍射、透射电镜、力学性能检测等手段,研究了其组织性能随厚度方向的变化规律。结果表明,TMCP钢板的晶粒尺寸分布在6~10 μm,组织主要为粒状贝氏体及块状铁素体,且表面处以贝氏体为主,心部以铁素体及碳化物为主;钢板600 ℃回火后在铁素体晶界有较多渗碳体析出,Nb、Ti元素的碳化物存在复合析出的现象。力学性能测试结果表明,宽厚板表面处的屈服强度可达542 MPa,而心部处的屈服强度为384 MPa。样品断裂方式以微孔聚集性断裂为主,且微孔多在铁素体板条间及夹杂物处形成。各强化机制对屈服强度的贡献中,细晶强化、析出强化占主导地位。

关键词: 低合金高强钢, 厚板, 组织与力学性能, 海洋工程, 强化机制

Abstract: A 420 MPa grade high strength low alloy heavy plates with a thickness of 80 mm were produced by the process of TMCP plus tempering at 600 ℃. The microstructure and mechanical properties along the thickness direction were analyzed by using optical microscopy, scanning electron microscopy, transmission electron microscopy, electron back-scattered diffraction and mechanical tests. The results show that a fine-grained structure with an average grain size of 6-10 μm can be obtained by TMCP. After tempering, the microstructure near the surface of the plate is dominated by bainite, while the core is mainly characterized by aggregated carbides and ferrite. After tempering at 600 ℃, cementite precipitates on the ferrite grain boundary, and compound precipitation of carbides of Nb and Ti elements is found. Tensile tests show a decrease in yield strengths from 542 MPa on the surface to 384 MPa at the core. The fracture model of the plate is dominated by micro-hole coalescence fracture. Micro-holes are mostly formed between ferritic laths and near inclusions. The grain refinement strengthening and precipitation strengthening dominate the contribution of each strengthening mechanism to the yield strength.

Key words: high strength low alloy steel, heavy plate, microstructure and mechanical properties, offshore engineering, strengthening mechanism

中图分类号:

TG142.1

崔树刚, 史长鑫, 谷国超, 许文花, 吕宇鹏. 海工用低合金高强钢厚板的组织与力学性能[J]. 金属热处理, 2023, 48(10): 37-44.

Cui Shugang, Shi Changxin, Gu Guochao, Xu Wenhua, Lü Yupeng. Microstructure and mechanical properties of high strength low alloy thick steel plates for offshore engineering[J]. Heat Treatment of Metals, 2023, 48(10): 37-44.

参考文献

[1]翁宇庆. 我国海洋工程装备用钢需求与趋势: 海洋工程装备与船舶用钢论坛 -“海洋平台用钢国际研讨会”[Z]. 中国海南博鳌, 2013.
[2]夏杰生. 发展海洋工程“材料先行”刻不容缓[N]. 中国冶金报, 2014-01-18(004).
[3]杨才福, 苏航. 高性能船舶及海洋工程用钢的开发[J]. 钢铁, 2012, 47(12): 1-8.
Yang Caifu, Su Hang. Research and development of high-performance shipbuilding and marine engineering steel[J]. Iron and Steel, 2012, 47(12): 1-8.
[4]刘庚, 李慧杰, 王庆海, 等. 690 MPa级海洋平台用特厚齿条钢的回火稳定性[J]. 东北大学学报(自然科学版), 2022, 43(2): 188-196.
Liu Geng, Li Huijie, Wang Qinghai, et al. Tempering stability of a 690 MPa grade ultra-heavy rack steel for offshore platform[J]. Journal of Northeastern University (Natural Science), 2022, 43(2): 188-196.
[5]李班, 张鑫, 陈祖政, 等. 浅析加工工艺对特厚板厚度方向变形的影响[J]. 宽厚板, 2023, 29(2): 35-41.
Li Ban, Zhang Xin, Chen Zuzheng, et al. The brief analysis of processing technology influence on through-thickness deformation of extra heavy steel plate[J]. Wide and Heavy Plate, 2023, 29(2): 35-41.
[6]刘罗锦, 梁小凯, 孙新军. 高Ti低合金钢中TiC粒子的固溶及沉淀析出行为[J]. 金属热处理, 2020, 45(4): 110-114.
Liu Luojing, Liang Xiaokai, Sun Xinjun. Solution and precipitating behaviors of TiC particles in high Ti low alloy steel[J]. Heat Treatment of Metals, 2020, 45(4): 110-114.
[7]韩荣, 刘洪喜, 尉文超, 等. 回火温度对Ti-V-Mo微合金化马氏体钢析出相和力学性能的影响[J]. 金属热处理, 2021, 46(12): 53-60.
Han Rong, Liu Hongxi, Wei Wenchao, et al. Effect of tempering temperature on precipitation and mechanical properties of Ti-V-Mo micro alloyed martensitic steel[J]. Heat Treatment of Metals, 2021, 46(12): 53-60.
[8]王晓东, 陈蕴博, 左玲立, 等. V-N微合金化CrSiMn系低合金铸钢中的析出行为[J]. 金属热处理, 2021, 46(8): 15-20.
Wang Xiaodong, Chen Yunbo, Zuo Lingli, et al. Precipitation behavior in V-N micro alloyed CrSiMn low alloy cast steel[J]. Heat Treatment of Metals, 2021, 46(8): 15-20.
[9]Eman El-shenawy, Reham Reda. Optimization of TMCP strategy for microstructure refinement and flow-productivity characteristics enhancement of low carbon steel[J]. Journal of Materials Research and Technology, 2019, 8(3): 2819-2831.
[10]Xiong Wenmin, Song Renbo, Huo Weifeng, et al. Microstructure characteristics and impact fracture mechanisms of Nb and V-Ti micro-alloyed offshore platform steels[J]. Vacuum, 2022, 195: 110709.
[11]车立志, 章顺虎, 李言, 等. 特厚板差温轧制参数建模及优化控制研究现状[J]. 铸造技术, 2023, 44(4): 303-312.
Che Lizhi, Zhang Shunhu, Li Yan, et al. Status of research on modelling and optimal control of gradient temperature rolling parameters for ultra-heavy Plates[J]. Foundry Technology, 2023, 44(4): 303-312.
[12]Zhou Yanlei, Jia Tao, Zhang Xiangjun, et al. Investigation on tempering of granular bainite in an offshore platform steel[J]. Materials Science and Engineering A, 2015, 626: 352-361.
[13]Sun X J, Yuan S F, Xie Z J, et al. Microstructure-property relationship in a high strength-high toughness combination ultra-heavy gauge offshore plate steel: The significance of multiphase microstructure[J]. Materials Science and Engineering A, 2017, 689: 212-219.
[14]Militzer Matthias. Thick Plate/Line Pipe Steel (Low-alloyed Steels)[M]. Encyclopedia of Materials: Metals and Alloys, Caballero F G, Oxford: Elsevier, 2022: 115-128.
[15]付天亮, 韩钧, 邓想涛, 等. 特厚钢板射流淬火过程厚向冷速实验研究[J]. 东北大学学报(自然科学版), 2017, 38(11): 1548-1553.
Fu Tianliang, Han Jun, Deng Xiangtao, et al. Experimental study on thickness cooling rate of jet impingement quenching for ultra heavy plate[J]. Journal of Northeastern University (Natural Science), 2017, 38(11): 1548-1553.
[16]邹雷雷, 黄俊雄, 李权辉, 等. 连铸坯裂纹与偏析预测研究进展[J]. 连铸, 2022, 47(2): 2-9.
Zou Leilei, Huang Junxiong, Li Quanhui, et al. Research progress on the crack and segregation prediction of continuous casting strand[J]. Continuous Casting, 2022, 47(2): 2-9.
[17]Suikkanen P P, Ristola A, Hirvi A M, et al. Effects of carbon content and cooling path on the microstructure and properties of TRIP-aided ultra-high strength steels[J]. ISIJ International, 2013, 53(2): 337-346.
[18]Park Jaeyoung, Han Kyuseok, Woo Jongsoo, et al. Influence of primary annealing condition on texture development in grain-oriented electrical steels[J]. Acta Materialia, 2002, 50(7): 1825-1834.
[19]罗衍昭, 张炯明, 肖超, 等. 低碳Nb--Ti二元微合金钢析出过程的演变[J]. 工程科学学报, 2012, 34(7): 775-782.
Luo Yanzhao, Zhang Jiongming, Xiao Chao, et al. Evolution of precipitates in Nb-Ti binary low-carbon micro-alloyed steels[J]. Chinese Journal of Engineering, 2012, 34(7): 775-782.
[20]朱瑞琪. 热轧DP600汽车用钢变形及断裂行为研究[D]. 武汉: 武汉科技大学, 2018.
[21]Tu Xingyang, Shi Xiaobo, Yan Wei, et al. Tensile deformation behavior of ferrite-bainite dual-phase pipeline steel[J]. Materials Science and Engineering A, 2022, 831: 142230.
[22]雍歧龙. 钢铁材料中的第二相[M]. 北京: 冶金工业出版社, 2006.
[23]杨跃标, 邓深, 樊雷, 等. 钛微合金化高强钢的组织性能及强化机制[J]. 钢铁, 2019, 54(10): 72-79.
Yang Yuebiao, Deng Shen, Fan Lei, et al. Microstructure, mechanical properties and strengthening mechanism of Ti micro-alloyed high strength steel[J]. Iron and Steel, 2019, 54(10): 72-79.
[24]李亦庄, 黄明欣. 基于中子衍射和同步辐射X射线衍射的TWIP钢位错密度计算方法[J]. 金属学报, 2020, 56(4): 487-493.
Li Yizhuang, Huang Mingxin. A method to calculate the dislocation density of a TWIP steel based on neutron diffraction and synchrotron X-ray diffraction[J]. Acta Metallurgica Since, 2020, 56(4): 487-493.

海工用低合金高强钢厚板的组织与力学性能

Microstructure and mechanical properties of high strength low alloy thick steel plates for offshore engineering

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	鄢文泽, 闫文青, 林轩艺, 王红鸿. 铌微合金化对低合金高强钢模拟焊接热影响区粒状贝氏体相变及SH-CCT曲线的影响[J]. 金属热处理, 2023, 48(9): 150-156.
[2]	李世文, 熊伟, 张文亮, 王超, 高占勇. 20Si2Mn2CrNi钢锻后晶粒细化及强韧性提升工艺[J]. 金属热处理, 2023, 48(7): 157-161.
[3]	陈波, 尹树春, 梁振威, 刘丽萍, 张继国, 翟昌源, 刘涛. 高韧性2 GPa级热成形钢热冲压工艺及应用性能分析[J]. 金属热处理, 2023, 48(7): 166-175.
[4]	孟亚森, 潘丽芳, 张红旭, 刘鹏, 任志峰, 刘光明. 新型700 MPa级高强锚杆钢的微观组织及强化机制[J]. 金属热处理, 2023, 48(5): 41-48.
[5]	孙铭璇, 孟利, 张宁, 张波, 梁丰瑞, 罗小兵. 感应淬火条件下Cu-Ni低碳低合金钢的强化机制[J]. 金属热处理, 2023, 48(4): 204-210.
[6]	孙铭璇, 孟利, 张宁, 张波, 梁丰瑞, 罗小兵. 低碳含Cu中厚钢板富Cu相的时效析出行为[J]. 金属热处理, 2023, 48(2): 94-102.
[7]	张金城, 孙胜辉, 蔡明晖, 赵文柱, 丁桦. 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.
[8]	王明明, 马飞, 裴未迟, 李冬冬, 龙海洋, 纪宏超, 刘帅. 汽车用高强塑积中锰钢的研究进展[J]. 金属热处理, 2022, 47(9): 272-280.
[9]	冯赞, 脱臣德, 欧阳藩. 淬火冷却工艺对F460钢调质厚板组织与性能的影响[J]. 金属热处理, 2022, 47(6): 133-137.
[10]	代永娟, 武祥祥, 李佳坤, 国栋, 王波. 退火温度对Fe-24.38Mn-0.44C TWIP钢组织性能的影响[J]. 金属热处理, 2022, 47(2): 146-152.
[11]	车马俊, 周生璇, 杜晓洁, 赵晋斌, 何宜柱, 徐震霖. 回火温度对EH890海洋工程用钢耐蚀性能的影响[J]. 金属热处理, 2022, 47(10): 147-153.
[12]	陶素芬, 吴浩, 孙桂林, 陈龙, 陈波. Ni含量对EQ70海洋工程用钢CCT曲线的影响[J]. 金属热处理, 2022, 47(1): 100-105.
[13]	何利军, 周龙, 汤淳坡, 郭小钢, 金晓, 赵彦芬, 薛飞, 张国栋. 长时服役后T92钢管的微观组织及力学性能变化[J]. 金属热处理, 2021, 46(7): 31-36.
[14]	杨鹏, 张朋彦, 纪久张. 两相区淬火+回火对600 MPa级低合金高强钢组织与性能的影响[J]. 金属热处理, 2021, 46(6): 59-64.
[15]	权晨, 刘新宝, 朱麟, 李博, 王妮. 高铬耐热钢蠕变过程中的组织演化行为[J]. 金属热处理, 2021, 46(6): 135-145.