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核电站接管安全端异种金属焊接接头残余应力预测的研究现状

郭舒, 王海涛, 韩恩厚

郭舒, 王海涛, 韩恩厚. 核电站接管安全端异种金属焊接接头残余应力预测的研究现状[J]. 机械工程材料, 2021, 45(10): 1-12. DOI: 10.11973/jxgccl202110001
引用本文: 郭舒, 王海涛, 韩恩厚. 核电站接管安全端异种金属焊接接头残余应力预测的研究现状[J]. 机械工程材料, 2021, 45(10): 1-12. DOI: 10.11973/jxgccl202110001
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GUO Shu, WANG Haitao, HAN Enhou. Research Status of Residual Stress Prediction of Dissimilar Metal Weld Joints ofNozzle to Safe-End in Nuclear Power Plant[J]. Materials and Mechanical Engineering, 2021, 45(10): 1-12. DOI: 10.11973/jxgccl202110001
Citation: GUO Shu, WANG Haitao, HAN Enhou. Research Status of Residual Stress Prediction of Dissimilar Metal Weld Joints ofNozzle to Safe-End in Nuclear Power Plant[J]. Materials and Mechanical Engineering, 2021, 45(10): 1-12. DOI: 10.11973/jxgccl202110001
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核电站接管安全端异种金属焊接接头残余应力预测的研究现状

  • 中国科学院金属研究所, 核用材料安全与评价重点实验室, 沈阳 110016

详细信息
    作者简介:

    郭舒(1985-),女,山西忻州人,助理研究员,博士研究生

  • 中图分类号: TG457.1

Research Status of Residual Stress Prediction of Dissimilar Metal Weld Joints ofNozzle to Safe-End in Nuclear Power Plant

  • Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Science, Shenyang 110016, China

摘要

    摘要
  • 摘要: 接管安全端异种金属焊接接头是压水堆核电站中连接主设备低合金钢压力容器接管嘴与不锈钢管道的一种典型结构，易发生一次侧应力腐蚀开裂，而焊接残余拉应力是造成此种应力腐蚀开裂的主要因素之一。因此，准确评估接管安全端异种金属接头的焊接残余应力分布至关重要。通过有限元模拟研究焊接残余应力旨在保障核电设备的结构完整性。介绍了接管安全端异种金属焊接接头的结构、材料与焊接工艺特点，综述了有限元模拟方法预测异种金属焊接接头残余应力分布的数值计算工作和典型流程，以及诸多因素对有限元模拟异种金属焊接接头残余应力的影响。
    Abstract: The nozzle to safe-end dissimilar metal weld joint is a typical structure in pressurized water reactor power plant connecting the low alloy steel pressure vessel nozzle of the main equipment and the austenitic stainless steel pipe, which is susceptible to primary water stress corrosion cracking. The welding residual tensile stress is one of the primary drivers of this stress corrosion cracking. Thus, accurate estimation of the welding residual stress distribution within the nozzle to safe-end dissimilar metal weld joint is of great significance. Investigating the welding residual stress by finite element modeling aims to ensure the structural integrity of nuclear equipments. The structures, materials and welding process characteristics of the nozzle to safe-end dissimilar metal weld joints are described. The numerical calculation works and typical processes of the residual stress distribution inside the dissimilar metal weld joints predicted by the finite element method, as well as the influence of many factors on finite element modeling residual stresses in dissimilar metal weld joints are reviewed.
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  • 收稿日期:  2021-07-20
  • 修回日期:  2021-09-09
  • 刊出日期:  2021-10-19

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