多层多道TIG焊对高强钢焊缝组织和韧性的影响

doi:10.3901/JME.2017.18.106

机械工程学报 ›› 2017, Vol. 53 ›› Issue (18): 106-112.doi: 10.3901/JME.2017.18.106

多层多道TIG焊对高强钢焊缝组织和韧性的影响

彭杏娜^1,2,3, 彭云³, 彭先宽², 丛相州²

1. 南瑞集团公司(国网电力科学研究院) 南京 211000;
2. 北京国电富通科技发展有限责任公司北京 102401;
3. 钢铁研究总院焊接研究所北京 100081

收稿日期:2016-04-05 修回日期:2016-12-19 出版日期:2017-09-20 发布日期:2017-09-20
作者简介:彭杏娜,女,1983年出生,工程师.主要研究方向为高强钢及耐热钢的焊接性及焊接工艺.E-mail:pengxingna2325@163.com

Influence of Multi-layer and Multi-pass TIG Welding Process on the High Strength Weld Metal Microstructure and Toughness

PENG Xingna^1,2,3, PENG Yun³, PENG Xiankuan², CONG Xiangzhou²

1. NARI Group Corporation(State Grid Electric Power Research Institute), Nanjing 211000;
2. Beijing Guodian Futong Science and Technology Development Co., Ltd., Beijing 102401;
3. Welding Research Institute, Central Iron & Steel Research Institute, Beijing 100081

Received:2016-04-05 Revised:2016-12-19 Online:2017-09-20 Published:2017-09-20

摘要/Abstract

摘要： 对890 MPa级以上的高强焊接接头采用钨极氩弧焊（Tungsten inert gas，TIG）多层多道焊接工艺。应用光学显微镜、扫描电镜和透射电镜等手段对高强焊接接头焊缝的末道组织、焊缝的再热组织以及不同焊道下的冲击断口的形貌进行观察，分析钨极氩弧焊工艺下不同的焊道组织对焊缝韧性的影响。结果表明，焊缝末道组织由板条马氏体和联合贝氏体组成。联合贝氏体对冲击韧性是不利的。多层多道焊的再热作用有利于改善和细化组织，使柱状晶消失，同时使原来方向一致的板条马氏体组织变为回火马氏体组织，粗大的联合贝氏体组织消失，这也是焊缝韧性提高的主要原因。此外，多层多道焊接工艺还会使焊缝中残余奥氏体形态发生改变，由薄膜态转变为块状残余奥氏体，但由于块状残余奥氏体尺寸较小且含量较少，所以其对韧性影响较小。

关键词: TIG多层多道焊, 残余奥氏体, 韧性, 组织

Abstract: High strength weld metal with strength over 890 MPa are made using tungsten inert gas arc welding(TIG) with multi-layer and multi-pass process. The microstructure of the as-weld metals and reheated metals and charpy impact fracture surface is characterized with optical microscope(OM), scanning electron microscope(SEM), transmission electron microscope(TEM),and the influence of microstructure on weld metal toughness is analysed. The result shows that the as-weld metals are mainly composed of martensite and coalesced bainite, which is harmful to impact toughness. The reheated metals are mainly composed of finer temper martensite with column and coalesced bainite disappearing, which improves the weld toughness. The morphology of retained austenite turned from films into block due to the effect of reheat, with little contribution to the toughness.

Key words: microstructure, retained austenite, TIG multi-layer and multi-pass welding, toughness

中图分类号:

TG142

彭杏娜, 彭云, 彭先宽, 丛相州. 多层多道TIG焊对高强钢焊缝组织和韧性的影响[J]. 机械工程学报, 2017, 53(18): 106-112.

PENG Xingna, PENG Yun, PENG Xiankuan, CONG Xiangzhou. Influence of Multi-layer and Multi-pass TIG Welding Process on the High Strength Weld Metal Microstructure and Toughness[J]. Journal of Mechanical Engineering, 2017, 53(18): 106-112.

参考文献

[1] 廖向宇, 彭国成, 易全旺. 浅析超高强度钢的焊接工艺[J]. 焊接, 2006(7):56-58. LIAO Xiangyu, PENG Guocheng, YI Quanwang. Welding technology of super high-tensile steel[J]. Welding & Joining, 2006(7):56-58.
[2] 许文清, 任宇飞. 工程机械结构件的焊接工艺现状与发展趋势[J]. 工程机械, 2005, 36(1):50-53. XU Wenqing, REN Yufei. Present situation of welding processes for construction machinery structure components and their development trends[J]. Construction Machinery, 2005, 36(1):50-53.
[3] GOUDA M, TAKAHASHI M, IKEUCHI K. Microstructures of gas metal arc weld metal of 950 MPa class steel[J]. Science and Technology of Welding & Joining, 2005, 10(3):369-377.
[4] TERASHIMA S, BHADESHIA H K D H. Changes in toughness at low oxygen concentrations in steel weld metals[J]. Science and Technology of Welding & Joining, 2006, 11(5):509-516.
[5] 齐彦昌, 彭云, 魏金山, 等. 850级钢熔化焊焊缝的组织特征[J]. 钢铁研究学报, 2010, 22(3):19-22. QI Yanchang, PENG Yun, WEI Jinshan, et al. Structure characteristics of weld metal for 850MPa grade steel[J]. Journal of Iron and Steel Research, 2010, 22(3):19-22.
[6] 安同邦, 单际国, 魏金山, 等. 热输入对1000MPa 级工程机械用钢接头组织性能的影响[J]. 机械工程学报, 2014, 50(22):42-49. AN Tongbang, SHAN Jiguo, WEI Jinshan, et al. Effect of geat input on microstructure and performance of welded joint in 1000MPa grade steel for construction machinery[J]. Journal of Mechanical Engineering, 2014, 50(22):42-49.
[7] SURIAN E, RAMINI M, DEVEDIA L. Influence of Molybdenum on ferritic high-strength SMAW all-weld-metal properties[J]. Welding Research, 2005, 84(4):53-62.
[8] 彭杏娜, 彭云, 田志凌, 等. Ni元素对Cr-Ni-Mo系高强焊缝组织演化的影响[J]. 焊接学报, 2014, 35(9):32-36. PENG Xingna, PENG Yun, TIAN Zhiling, et al. The effect of Ni on the microstructure evolution of Cr-Ni-Mo series high strength weld metal[J]. Transactions of the China Welding Institution, 2014, 35(9):32-36.
[9] 张文钺. 焊接冶金学(基本原理)[M]. 北京:机械工业出版社, 1996. ZHANG Wenyue. Welding metallurgy(Basic principles)[M]. Beijing:China Machine Press, 1996.
[10] 兰亮云, 邱春林, 赵德文, 等. 低碳贝氏体钢焊接热影响区中不同亚区的组织特征与韧性[J]. 金属学报, 2011, 47(8):1046-1054. LAN Liangyun, QIU Chunlin, ZHAO Dewen, et al. Microstructural characters and toughness of different sub-regions in the welding heat affected zone of low carbon bainitic steel[J]. Acta Metallurgica Sinica, 2011, 47(8):1046-1054.
[11] CHANG L C, BHADESHIA H K D H. Austenite films in bainitic microstructures[J]. Materials Science and Technology, 1995, 11(9):874-881.
[12] TIMOKHINA I B, HODGSON P D, PERELOMA E V. Effect of microstructure on the stability of retained austenite in transformation-induced-plasticity steels[J]. Metallurgical and Materials Transactions A, 2004, 35(8):2331-2341.
[13] BISS V, CRYDERMAN R L. Martensite and retained austenite in hot-rolled low carbon bainitic steel[J]. Metallurgical and Materials Transactions B, 1980, 2(8):2267-2276.
[14] KEEHAN E, KARLSSON L, ANDREN H O, et al. New developments with C-Mn-Ni high strength steel weld metals, Part A. microstructure[J]. Welding Journal, 2006, 85(9):200-210.
[15] BHADESHIA H K D H, KEEHAN E, KARLSSON L, et al. Coalesced bainite[J]. Transactions of the Indian Institute of Metals, 2006, 59(1):689-694.
[16] CABALLERO F G, CHAO J, CORNIDE J, et al. Toughness deterioration in advanced high strength bainitic steels[J]. Materials Science and Engineering A, 2009, 525(1-2):87-95.
[17] KHODIRA S, SHIBAYANAGI T, TAKAHASHI M, et al. Microstructural evolution and mechanical properties of high strength 3-9% Ni-steel alloys weld metals produced by electron beam welding[J]. Materials and Design, 2014, 60(3):391-400.

多层多道TIG焊对高强钢焊缝组织和韧性的影响

Influence of Multi-layer and Multi-pass TIG Welding Process on the High Strength Weld Metal Microstructure and Toughness

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