热处理对极寒服役条件下弯管用X80钢焊缝组织性能的影响

doi:10.13251/j.issn.0254-6051.2020.10.016

金属热处理 ›› 2020, Vol. 45 ›› Issue (10): 79-84.DOI: 10.13251/j.issn.0254-6051.2020.10.016

热处理对极寒服役条件下弯管用X80钢焊缝组织性能的影响

毕宗岳^1,2, 韦奉^1,2, 张万鹏^1,2, 李洁³, 张敏³

1.国家石油天然气管材工程技术研究中心, 陕西宝鸡 721008;
2.宝鸡石油钢管有限责任公司, 陕西宝鸡 721008;
3.西安理工大学材料科学与工程学院, 陕西西安 710048

收稿日期:2020-03-28 出版日期:2020-10-25 发布日期:2020-12-29
作者简介:毕宗岳(1962—),男,教授级高级工程师,主要研究方向为管材开发及焊接技术,E-mail:bsgbzy@cnpc.com.cn
基金资助:
国家重点研发计划(2018YFC0310300)

Effect of heat treatment on microstructure and properties of welded joints of X80 steel used for bent pipe under extremely cold service conditions

Bi Zongyue^1,2, Wei Feng^1,2, Zhang Wanpeng^1,2, Li Jie³, Zhang Min³

1. Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods, Baoji Shaanxi 721008, China;
2. Baoji Petroleum Steel Pipe Co., Ltd., Baoji Shaanxi 721008, China;
3. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an Shaanxi 710048, China

Received:2020-03-28 Online:2020-10-25 Published:2020-12-29

摘要/Abstract

摘要： 利用显微组织分析、低温冲击试验、断口分析等手段,研究了不同热处理工艺对弯管用X80钢焊缝显微组织与低温冲击性能的影响。结果表明,在890~980 ℃范围内正火,随着正火温度升高,焊缝组织逐渐粗化,M-A组元和碳化物数量增多且聚集程度逐渐增加,低温冲击性能下降。在620~680 ℃范围内回火,随着回火温度的升高,焊缝中贝氏体及针状铁素体的混合组织发生回复与再结晶,碳化物析出和先共析铁素体含量增加,硬脆M-A组元逐渐分解,低温冲击吸收能量则先升后降,显微硬度逐渐降低。热处理后焊缝组织主要以针状铁素体(AF)和粒状贝氏体(GB)为主,同时存在少量的先共析铁素体(PF)和弥散分布的M-A组元。采用920 ℃正火+660 ℃高温回火时,焊缝低温冲击吸收能量最优,为148 J,同时显微硬度波动较小,冲击断口放射区为准解理断裂,无大尺寸裂纹且出现部分韧窝,表明该热处理工艺下处理的弯管可以满足在-45 ℃极寒条件下的服役要求。

关键词: X80管线钢, 焊缝组织, 热处理, 低温韧性

Abstract: Effects of different heat treatment processes on the microstructure and low-temperature impact property of the welded joints of X80 steel used for bent pipe were studied by means of microstructure analysis, low-temperature impact test, and fracture analysis. The results show that, when normalized in the range of 890-980 ℃, the microstructure of welded joints gradually coarsens with the increase of normalizing temperature, and the number of M-A components and carbides rises, the aggregation extent increases gradually, and the low-temperature impact property decreases. When tempered in the range of 620-680 ℃, with the increase of tempering temperature, the mixed microstructure of bainite and acicular ferrite in the welded joints undergoes recovery and recrystallization, the content of carbide precipitates and proeutectoid ferrite increases, and the hard and brittle M-A components decompose gradually, the impact absorbed energy at low temperature increases first and then decreases, and the microhardness decreases gradually. The microstructure of the welded joints after heat treatment is mainly composed of acicular ferrite (AF) and granular bainite (GB), while a small amount of proeutectoid ferrite (PF) and dispersed M-A components are present. When normalized at 920 ℃ and then tempered at 660 ℃, the impact absorbed energy at low temperature of the welded joints is the best (148 J), while the microhardness is fluctuated slightly, and the radiation zone of the impact fracture is quasi-cleavage fracture, without large-scale cracks and with partial dimples, showing that the bent pipe treated by this heat treatment process can meet the service requirements under the extreme cold condition of -45 ℃.

Key words: X80 pipeline steel, microstructure of welded joints, heat treatment, low temperature toughness

中图分类号:

毕宗岳, 韦奉, 张万鹏, 李洁, 张敏. 热处理对极寒服役条件下弯管用X80钢焊缝组织性能的影响[J]. 金属热处理, 2020, 45(10): 79-84.

Bi Zongyue, Wei Feng, Zhang Wanpeng, Li Jie, Zhang Min. Effect of heat treatment on microstructure and properties of welded joints of X80 steel used for bent pipe under extremely cold service conditions[J]. Heat Treatment of Metals, 2020, 45(10): 79-84.

参考文献

[1]李艳华, 杨俊伟, 王炜. 热煨弯管在大口径管道中的应用[J]. 油气储运, 2002, 21(7): 49-51.
Li Yanhua, Yang Junwei, Wang Wei. The application of hot-bending bend in large diameter pipeline[J]. Oil and Gas Storage and Transportation, 2002, 21(7): 49-51.
[2]王晓香, 李延丰, 付彦宏, 等. X80级管线钢管和感应加热弯管的开发[J]. 焊管, 2009, 32(5): 28-30.
Wang Xiaoxiang, Li Yanfeng, Fu Yanhong, et al. Development of X80 grade pipeline steel pipe and induction heating bend[J]. Welded Pipe and Tube, 2009, 32(5): 28-30.
[3]李朝, 史航. 山区地段长输管道线路设计要点[J]. 油气储运, 2002, 21(12): 34-37.
Li Chao, Shi Hang. The design key point on mountainous pipeline[J]. Oil and Gas Storage and Transportation, 2002, 21(12): 34-37.
[4]杨才荣, 范向红. 西气东输工程用大口径热煨国产弯管情况分析[J]. 通用机械, 2004(9): 71-73.
Yang Cairong, Fan Xianghong. Analysis of domestic large-diameter hot-bent pipe for west-east gas transportation pipelines[J]. General Machinery, 2004(9): 71-73.
[5]Babu S S. The mechanism of acicular ferrite in weld deposits[J]. Current Opinion in Solid State and Materials Science, 2004, 8(3/4): 267-278.
[6]刘迎来, 池强, 王鹏. 加热温度对X80弯管钢组织与性能的影响[J]. 金属热处理, 2010, 35(10): 29-32.
Liu Yinglai, Chi Qiang, Wang Peng. Influence of heating temperature on microstructure and properties of X80 steel bends[J]. Heat Treatment of Metals, 2010, 35(10): 29-32.
[7]刘宇, 冯斌, 李烨铮, 等. 加热温度对X70大变形管线钢热煨弯管组织的影响[J]. 热加工工艺, 2011, 40(21): 22-24.
Liu Yu, Feng Bin, Li Yezheng, et al. Effects of heating temperature on microstructure of induction bends form X70 pipeline steel with excellent deformation[J]. Hot Working Technology, 2011, 40(21): 22-24.
[8]王小江, 孙新军, 雍岐龙, 等. 碳化钒析出对X80管线钢焊接热影响区韧性的影响[J]. 金属热处理, 2015, 40(4): 7-12.
Wang Xiaojiang, Sun Xinjun, Yong Qilong, et al. Effect of VC on toughness of welding heat affected zone in X80 pipeline steel[J]. Heat Treatment of Metals, 2015, 40(4): 7-12.
[9]Niu J, Qi L H, Liu Y L, et al. Tempering microstructure and mechanical properties of pipeline steel X80[C]//Frontier Symposium of China Postductors on Materials Science, 2009.
[10]焦兰, 刘清友, 孙新军, 等. 高铌X80管线钢焊接粗晶区组织和性能研究[J]. 钢铁, 2011, 46(3): 75-78.
Jiao Lan, Liu Qingyou, Sun Xinjun, et al. Microstructures of coarse grain heat affect zone and toughness of high Nb X80 pipeline steel[J]. Iron and Steel, 2011, 46(3): 75-78.
[11]范玉然, 杨建军, 汪凤, 等. 热处理工艺对X80管件焊缝低温冲击性能的影响[J]. 金属热处理, 2012, 37(4): 105-108.
Fan Yuran, Yang Jianjun, Wang Feng, et al. Effect of heat treatment on low temperature impact toughness of X80 fittings welding seam[J]. Heat Treatment of Metals, 2012, 37(4): 105-108.
[12]毕宗岳, 黄晓辉, 牛辉, 等. X80级ø1422 mm×21.4 mm大直径厚壁焊管的研发及性能研究[J]. 焊管, 2017, 40(4): 1-7.
Bi Zongyue, Huang Xiaohui, Niu Hui, et al. Development and performance study of X80 grade ø1422 mm×21.4 mm large diameter and thick wall welded pipe[J]. Welded Pipe and Tube, 2017, 40(4): 1-7.
[13]Kim Y M, Lee H, Kim N J. Transformation behavior and microstructural characteristics of acicular ferrite in linepipe steels[J]. Materials Science and Engineering A, 2008, 478(1/2): 361-370.
[14]Farrar R A, Zhang Z, Bannister S R, et al. The effect of prior austenite grain size on the transformation behaviour of C-Mn-Ni weld metal[J]. Journal of Materials Science, 1993, 28(5): 1385-1390.
[15]陶勇寅. X80管线钢焊接工艺及可靠性研究[D]. 天津: 天津大学, 2005: 76-84.
Tao Yongyan. Study on welding technology and reliability of X80 pipeline steel[D]. Tianjin: Tianjin University, 2005: 76-84.
[16]池强, 刘腾跃, 燕铸, 等. 油气管道用弯管感应加热工艺研究[J]. 热加工工艺, 2012, 41(13): 113-115.
Chi Qiang, Liu Tengyue, Yan Zhu, et al. Study on heating process of induction bend for oil and gas pipeline[J]. Hot Working Technology, 2012, 41(13): 113-115.
[17]王旭. 厚壁X80热煨弯管用钢及热煨工艺研究[D]. 秦皇岛: 燕山大学, 2014: 46-58.
Wang Xu. Research on steels and hot induction bending processes for X80 hot induction bend[D]. Qinhuangdao: Yanshan University, 2014: 46-58.

热处理对极寒服役条件下弯管用X80钢焊缝组织性能的影响

Effect of heat treatment on microstructure and properties of welded joints of X80 steel used for bent pipe under extremely cold service conditions

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]	李立, 曾艳, 吴晓春. 4Cr5Mo2VCo钢的热处理工艺优化[J]. 金属热处理, 2022, 47(4): 133-140.
[2]	王方军, 王东哲, 万红, 时瑶, 沈涛. 热处理和冷变形量对定膨胀合金4J32C线膨胀系数的影响[J]. 金属热处理, 2022, 47(4): 199-203.
[3]	王绍灼, 孟晗, 王芬, 樊海卫, 李燕, 唐超. 改善低氧TC4-LC及重熔TC4钛合金性能的热处理工艺[J]. 金属热处理, 2022, 47(4): 204-207.
[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]	王敬元, 吴松全, 张博华, 辛社伟, 杨义, 王皞, 黄爱军. 固溶时效处理对BT25y钛合金显微组织及硬度的影响[J]. 金属热处理, 2022, 47(3): 14-19.
[6]	樊洋, 杨明华, 陈凯敏, 孙丙岩. 焊后热处理对31CrMoV9钢电子束焊接接头组织及性能的影响[J]. 金属热处理, 2022, 47(3): 57-60.
[7]	陈善勇, 王快社, 乔柯, 王文. 碱热处理对搅拌摩擦加工AZ31镁合金耐腐蚀性能的影响[J]. 金属热处理, 2022, 47(3): 61-66.
[8]	冯锐, 李利连, 帖锦芳, 侯嘉强, 米奕媛. 高温形变热处理对20CrMnTiH钢锻件组织及性能的影响[J]. 金属热处理, 2022, 47(3): 72-76.
[9]	方秀荣, 刘留, 徐慧慧, 高扬. 渗碳前预热处理对17CrNiMo6钢制齿轮轴畸变的影响[J]. 金属热处理, 2022, 47(3): 113-118.
[10]	张颖, 王浩军, 陈素明, 胡广, 欧阳德来, 崔霞, 胡生双. 热处理对激光立体成形TB18钛合金组织和力学性能的影响[J]. 金属热处理, 2022, 47(3): 124-129.
[11]	海侠女, 杨扬, 黄太伟, 范王展, 桂伟民, 何亮亮. 淬透性细化分级8620H钢的热处理性能研究[J]. 金属热处理, 2022, 47(3): 155-158.
[12]	龙亮, 胡齐贤, 罗云, 郑红祥, 王玉杰. 大型焊接容器局部热处理防畸变工装优化设计[J]. 金属热处理, 2022, 47(3): 234-238.
[13]	崔鼎, 车永平. 带内花键零件的畸变控制方法[J]. 金属热处理, 2022, 47(3): 252-256.
[14]	董瑞, 陈林, 岑耀东, 包喜荣. 不同热处理条件下贝氏体钢的微观组织和疲劳裂纹扩展[J]. 金属热处理, 2022, 47(2): 153-158.
[15]	禹鑫磊, 郑小平, 曹通, 田亚强, 陈连生. 等温温度对轧制SIMA法制备7075合金半固态显微组织的影响[J]. 金属热处理, 2022, 47(2): 164-167.