终冷温度对低屈强比复合析出强化钢组织与性能的影响

doi:10.13251/j.issn.0254-6051.2021.04.023

金属热处理 ›› 2021, Vol. 46 ›› Issue (4): 131-137.DOI: 10.13251/j.issn.0254-6051.2021.04.023

终冷温度对低屈强比复合析出强化钢组织与性能的影响

马长文¹, 马龙腾¹, 王彦锋¹, 杨永达¹, 韩承良²

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:2021-01-08 出版日期:2021-04-25 发布日期:2021-05-08
作者简介:马长文(1975—),男,高级工程师,博士,主要研究方向为金属材料组织与性能,E-mail:mcw@mail.shougang.com.cn
基金资助:
国家重点研发计划(2017YFB0304804)

Effect of final cooling temperature on microstructure and mechanical properties of low yield ratio composite precipitation strengthening steel

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

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

Received:2021-01-08 Online:2021-04-25 Published:2021-05-08

摘要/Abstract

摘要： 利用热模拟方法测定低屈强比复合析出强化钢不同速率冷却后的显微组织并绘制动态连续冷却转变曲线,然后对比了不同终冷温度下试验钢的力学性能,并利用光学显微镜、扫描电镜与透射电镜分析不同终冷温度对试验钢轧后显微组织的影响。结果表明,随冷却速度的增加,试验钢的组织由粒状贝氏体转变为板条贝氏体,未发现铁素体组织,具有高淬透性。随终冷温度由400 ℃升为450 ℃,钢中板条亚结构发生粗化,位错密度下降,但高温下合金元素快速扩散使富Cu相与Nb/Ti碳化物的数量提高,析出强化效果增强。经优化终冷温度为450 ℃,此时试验钢中粒状贝氏体比例较高,可获得高强度与低屈强比的良好匹配。

关键词: 终冷温度, 富Cu相, 碳化物, 低屈强比, 板条亚结构

Abstract: By using thermo-mechanical simulation, the microstructure of a composite precipitation strengthening steel with low yield ratio under various cooling rates and the corresponding dynamic continuous cooling transformation (CCT) curves were determined. Then the effects of different final cooling temperature on mechanical properties were studied by property comparison, and that on microstructure by means of OM, SEM and TEM. The results show that the dominant microstructure changes from granular bainite into lath bainite with the increase of cooling rate and no ferrite is observed, which shows a good hardenability of the steel. As the final cooling temperature increases from 400 ℃ to 450 ℃, the lath substructure coarsens and the dislocation density decreases, while accelerated diffusion of alloy elements leads to higher number of Cu-rich particles and Nb/Ti carbides, resulting in enhanced precipitation strengthening effect. The optimized final cooling temperature is 450 ℃, at which the steel has a larger proportion of granular bainite, thus resulting a good match of high strength and low yield ratio.

Key words: final cooling temperature, Cu-rich phase, carbides, low yield ratio, lath substructure

中图分类号:

TG355

马长文, 马龙腾, 王彦锋, 杨永达, 韩承良. 终冷温度对低屈强比复合析出强化钢组织与性能的影响[J]. 金属热处理, 2021, 46(4): 131-137.

Ma Changwen, Ma Longteng, Wang Yanfeng, Yang Yongda, Han Chengliang. Effect of final cooling temperature on microstructure and mechanical properties of low yield ratio composite precipitation strengthening steel[J]. Heat Treatment of Metals, 2021, 46(4): 131-137.

参考文献

[1] 徐明,陆建锋,李红兵,等.考虑节点域加强的Q690GJ高强钢梁柱节点抗震性能试验研究[J].钢结构,2016,31(3):6-13.
Xu Ming,Lu Jianfeng,Li Hongbing,et al.Experimental research on the aseismic behavior of Q690GJ high strength steel beam-to-column connections considering reinforced panel zone[J].Steel Construction,2016,31(3):6-13.
[2] 蔡昕芮.中国地震发生频数及区域性特征的计算统计分析[J].统计与管理,2016(11):52-54.
Cai Xinrui.Statistic analysis of China earthquake frequency and regional characteristics[J].Statistics and Management,2016(11):52-54.
[3] Hu Fangxin,Shi Gang,Shi Yongjiu.Experimental study on seismic behavior of high strength steel frames:Global response[J].Engineering Structures,2017,131:163-179.
[4] 任文君,宋文.690 MPa高强韧建筑用钢的热处理与组织性能研究[J].材料开发与应用,2018,33(6):56-62.
Ren Wenjun,Song Wen.Study on heat treatment and microstructure and properties of 690 MPa high strength and toughness construction steel[J].Development and Application of Materials,2018,33(6):56-62.
[5] 那丽岩,周明荣.690 MPa级高强抗震钢板的合金化与回火工艺[J].金属热处理,2019,44(10):140-146.
Na Liyan,Zhou Mingrong.Alloying and tempering process of 690 MPa high strength seismic steel plate[J].Heat Treatment of Metals,2019,44(10):140-146.
[6] 王通,张朋,王九清,等.原始组织对690 MPa级海工钢亚温淬火后强韧性的影响[J].钢铁,2020,55(12):72-80.
Wang Tong,Zhang Peng,Wang Jiuqing,et al.Effect of original structure on strength and toughness of 690 MPa grade marine engineering steel after intercritical quenching[J].Iron and Steel,2020,55(12):72-80.
[7] 詹放,林田子,阴树标,等.回火工艺对690 MPa级抗震耐火钢板组织和力学性能的影响[J].昆明理工大学学报(自然科学版),2020,45(5):26-34.
Zhan Fang,Lin Tianzi,Yin Shubiao,et al.Effect of tempering process on microstructure and mechanical properties of 690 MPa grade anti-seismic fire-resistant steel plates[J].Journal of Kunming University of Science and Technology (Natural Science),2020,45(5):26-34.
[8] 张鹏,严玲,周成,等.淬火工艺对大厚度690 MPa级海工钢板组织性能的影响[J].金属热处理,2018,43(10):107-110.
Zhang Peng,Yan Ling,Zhou Cheng,et al.Effect of quenching process on microstructure and properties of heavy thickness 690 MPa grade marine engineering steel plate[J].Heat Treatment of Metals,2018,43(10):107-110.
[9] 李振团,柴锋,罗小兵,等.时效温度对Cu沉淀强化超高强海工钢力学性能的影响[J].材料导报,2020,34(6):6132-6137.
Li Zhentuan,Chai Feng,Luo Xiaobing,et al.Effect of aging temperature on mechanical properties of ultra high strength marine engineering steel strengthened by Cu precipitation[J].Materials Reports,2020,34(6):6132-6137.
[10] 李彤.Mn、Ni元素对钢中富Cu相析出强化的影响[D].上海:上海大学,2019.
Li Tong.Effect of Mn and Ni on precipitation strengthening of Cu-rich phase in steel[D].Shanghai:Shanghai University,2019.
[11] Matsuda H,Bhadeshia H K D H.Kinetics of the bainite transformation[J].Proceedings of the Royal Society of London.Series A:Mathematical,Physical and Engineering Sciences,2004,460:1707-1722.
[12] 程时遐,张骁勇,冯耀荣,等.终冷温度对X100管线钢组织与性能的影响[J].金属热处理,2015,40(7):1-7.
Cheng Shixia,Zhang Xiaoyong,Feng Yaorong,et al.Effect of final cooling temperature on microstructure and properties of X100 pipeline steel[J].Heat Treatment of Metals,2015,40(7):1-7.
[13] 孙明雪.超低碳纳米富Cu相强化HSLA钢组织性能调控机理研究[D].沈阳:东北大学,2017.
Sun Mingxue.Study on regulation mechanism for microstructure and mechanical properties of ultra-low carbon nano-sized Cu precipitation strengthened HSLA steel[D].Shenyang:Northeastern University,2017.
[14] 雍岐龙.钢铁材料中的第二相[M].北京:冶金工业出版社,2006.
[15] 李小琳,王昭东,邓想涛,等.超快冷终冷温度对含Nb-V-Ti微合金钢组织转变及析出行为的影响[J].金属学报,2015,51(7):784-790.
Li Xiaolin,Wang Zhaodong,Deng Xiangtao,et al.Effect of final temperature after ultrafast cooling on microstructural evolution and precipitation behavior of Nb-V-Ti bearing low alloy steel[J].Acta Metallurgica Sinica,2015,51(7):784-790.

终冷温度对低屈强比复合析出强化钢组织与性能的影响

Effect of final cooling temperature on microstructure and mechanical properties of low yield ratio composite precipitation strengthening steel

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]	王英虎, 郑淮北, 刘庭耀, 宋令玺, 白青青. 固溶处理对53Cr21Mn9Ni4N耐热钢组织及碳化物的影响[J]. 金属热处理, 2022, 47(4): 39-45.
[2]	陈连生, 张露友, 田亚强, 杨子旋, 李红斌, 潘红波, 魏英立. 低碳高强舰船用钢的CCT曲线及其组织性能[J]. 金属热处理, 2022, 47(4): 63-68.
[3]	戴建科, 韩顺, 厉勇, 刘宪民, 王春旭, 庞学东, 李建新. 航空齿轮钢C69高温渗碳后的组织性能[J]. 金属热处理, 2022, 47(4): 219-225.
[4]	苏勇, 王帅, 王吉星, 于兴福, 刘洪秀, 刘金玲. 复合化学热处理对G13Cr4Mo4Ni4V钢组织和硬度的影响[J]. 金属热处理, 2022, 47(4): 226-230.
[5]	吴方俊, 邓小云, 揭晓华, 郑开宏, 骆智超. 热作模具用H13和Dievar钢的热疲劳性能[J]. 金属热处理, 2022, 47(3): 165-172.
[6]	李阔, 孙明月, 徐斌, 李殿中. 稀土H13模具钢横向冲击性能影响因素分析[J]. 金属热处理, 2022, 47(3): 181-185.
[7]	戴彦璋, 韩顺, 厉勇, 周敏, 王春旭. 回火温度对新一代传动齿轮钢C61组织及性能的影响[J]. 金属热处理, 2022, 47(1): 49-55.
[8]	李亮军, 张家敏, 迟宏宵, 周健. Co微合金化对M2高速钢组织和性能的影响[J]. 金属热处理, 2022, 47(1): 73-78.
[9]	邓彪, 陈蓬, 王国栋. 回火温度对二次硬化马氏体不锈钢组织和性能的影响[J]. 金属热处理, 2021, 46(9): 65-71.
[10]	李其, 陈正宗, 蒋新亮, 刘正东, 左良. 固溶温度对改型In617合金组织和性能的影响[J]. 金属热处理, 2021, 46(8): 109-114.
[11]	庄权, 王雨田, 董智鹏. 高碳铬轴承钢网状碳化物评价标准的对比分析[J]. 金属热处理, 2021, 46(6): 27-30.
[12]	徐琛, 陈广兴, 张勇伟, 谭騛, 许晓嫦. 1.25Cr-0.5Mo钢热处理后的组织与力学性能[J]. 金属热处理, 2021, 46(6): 200-204.
[13]	保顺, 刘荣佩, 丰涵, 佴启亮, 贾建, 朱玉亮, 宋志刚. 热等静压成形FeCrAl不锈钢的组织及脆性分析[J]. 金属热处理, 2021, 46(5): 9-13.
[14]	李灿明. 回火温度对1100 MPa钢组织和性能的影响[J]. 金属热处理, 2021, 46(4): 143-146.
[15]	常永, 李立, 吴少君, 左鹏鹏, 吴晓春. 球化温度对4Cr5Mo2V热作模具钢组织和性能的影响[J]. 金属热处理, 2021, 46(3): 46-50.