• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (10): 51-58.doi: 10.3901/JME.2022.10.051

• 材料科学与工程 • 上一篇    下一篇

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坡口形式对双金属复合板多层多道焊接头残余应力演变的影响

朱敏1, 郑乔2, 吴巍2, 钱伟方2, 夏立乾2, 张延松1, 王宝森2   

  1. 1. 上海交通大学上海市复杂薄板结构数字化制造重点实验室 上海 200240;
    2. 宝山钢铁股份有限公司中央研究院 上海 201900
  • 收稿日期:2021-05-07 修回日期:2021-11-13 出版日期:2022-05-20 发布日期:2022-07-07
  • 通讯作者: 张延松(通信作者),男,1976年出生,博士,教授,博士研究生导师。主要研究方向为复杂结构的装配/连接技术及装备。E-mail:zhangyansong@sjtu.edu.cn
  • 作者简介:朱敏,男,1993年出生,博士研究生。主要研究方向为层状金属复合板的焊接组织及性能控制。E-mail:zhumin118hai@sjtu.edu.cn

Study of Influences of Groove Type on Welding Residual Stress Evolution in Bimetallic Clad Plate Joints during Multi-layer and Multi-pass Welding

ZHU Min1, ZHENG Qiao2, WU Wei2, QIAN Weifang2, XIA Liqian2, ZHANG Yansong1, WANG Baosen2   

  1. 1. Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong University, Shanghai 200240;
    2. Baosteel Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900
  • Received:2021-05-07 Revised:2021-11-13 Online:2022-05-20 Published:2022-07-07

摘要: 采用TIG焊制备了13 mm厚Incoloy825/X52双金属复合板的对接接头,采用数值模拟与试验手段相结合的方法,分析了不同坡口形式对复合板接头焊接残余应力分布的影响,揭示了双金属复合板多层多道焊过程中残余应力的演变特征。结果表明:对于双金属复合板而言,复合型及V型坡口接头内部最高应力集中区域均位于过渡层内,沿水平方向呈现长条状分布,坡口形式的变化对于接头内部和表面应力的分布特征及峰值没有明显影响;从残余应力的产生和演变过程来看,只有当复合板接头的基层、过渡层和复层都焊接完成后,过渡层内才会产生最高应力集中区域;此外,最终焊道对复合板接头的应力分布起着决定性作用,会对最终应力状态产生很强的牵引作用,使其呈现偏离试板中心线的不对称分布。

关键词: 双金属复合板, 有限元, 坡口形式, 残余应力

Abstract: The 13 mm-thick Incoloy825/X52 bimetallic clad plates were prepared by TIG welding. Both finite element method and experimental means were conduct to study the residual stress distribution characteristics during multi-layer and multi-pass welding of plates with different groove types. The results show that for the bimetallic composite plate, the highest stress concentration area is always located at transition seam layer with a long strip distribution profile no matter which type of groove is applied. The changes of groove types have limited effects on the profile and peak value of both internal and surficial high residual stress region. The evolution of residual stress inside the joints shows that the highest stress concentration region in transition layer will not generate until all base, transition and flyer seam layers welding are finished. Besides, the final weld plays a decisive role in the formation of final residual stress state. It will have a strong “pulling” effect on residual stress distribution and make the final stress distribute asymmetrically.

Key words: bimetallic clad plate, finite element, groove type, residual stress

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