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Nuclear Fusion and Plasma Physics ›› 2023, Vol. 43 ›› Issue (1): 88-93.DOI: 10.16568/j.0254-6086.202301015

• Nuclear Fusion Engineering • Previous Articles     Next Articles

Study on the transformation of laser welding mode of reduced activation ferritic/martensitic steel CLF-1 

GOU Jun, WANG Ping-huai, ZHU Xiao-bo, WANG Chang-hao, HU Dan, QIU Rong, LIAO Hong-bin, CHEN Ji-ming    

  1. (Southwestern Institute of Physics, Chengdu 610041) 
  • Received:2021-06-02 Revised:2022-06-21 Online:2023-03-15 Published:2023-03-21

低活化铁素体/马氏体钢 CLF-1 激光焊接模式转变研究

缑 俊,王平怀,朱小波,王长浩,胡 丹,邱 嵘,廖洪彬,谌继明   

  1. (核工业西南物理研究院,成都 610041) 
  • 作者简介:缑俊(1991−),男,四川江油人,硕士,从事核聚变工程研究。
  • 基金资助:
    四川省科技计划重点研发项目(2018JZ0070)

Abstract: In order to study the laser welding mode transformation law of the reduced activation ferritic/martensitic steel (RAFM) CLF-1, the cross-section of the weld was macroscopically characterized and the weld size of was quantitatively analyzed. The results show that, under certain conditions, with the increase of the laser welding power, the welding mode changes from the heat-conduction welding mode to the deep-penetration welding mode, and there are three types of weld morphologies, ‘circular arc-shaped’, ‘V-shaped’ and ‘nail head-shaped’. The laser welding mode of CLF-1 steel is not affected by the welding speed and defocus. The critical value of the welding mode transition is the deep-penetration welding threshold, which is determined by the characteristics of the CLF-1 steel itself. The deep-penetration welding threshold of CLF-1 steel is about 1.20kW.mm−1 when the laser welding speed is 10mm.s −1

摘要: 为研究低活化铁素体/马氏体钢(RAFM) CLF-1 激光焊接模式转变规律,对其焊缝横截面形貌及尺寸 进行了宏观表征和定量分析。结果表明,在一定条件下,随着焊接功率的增大,焊接模式从热传导焊模式向小孔 深熔焊模式转变,焊缝横截面表现为“圆弧形”、“V 字形”和“钉头形”三种类型形貌。CLF-1 钢激光焊接模式 不受焊接速度、离焦量变化的影响。激光焊接模式转变的临界值为深熔焊阈值,CLF-1 钢深熔焊阈值由材料自身 特性决定,当焊接速度为 10mm.s −1时,CLF-1 钢深熔焊阈值约为 1.20kW.mm−1

关键词: 激光焊接, CLF-1 钢, 焊接模式转变

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