Anufriyev Dmitriy Andreevich, Protsenko Vladimir Georgievich, Larin Maksim Vasilievich, Kuznetsov Mikhail Valerievich, Mukhin Aleksey Alekseevich, Sviridenko Maksim Nikolaevich, Kuryntsev Sergey Vyacheslavovich, Grinin Oleg Ivanovich, Pevzner Yakov Borisovich
Institute of Machinery, Materials, and Transport, Peter the Great St. Petersburg Polytechnic University, Polytechnicheskaya, 29, Saint-Petersburg 195251, Russia.
N.A. Dollezhal Research and Development Institute of Power Engineering, Malaya Krasnoselskaya Str. 2/8, Moscow 107140, Russia.
Materials (Basel). 2024 Jul 29;17(15):3744. doi: 10.3390/ma17153744.
The results of experimental studies in the manufacture of components of the supporting structure of the first wall panel, carried out as part of the manufacture of a model of the International Thermonuclear Experimental Reactor (ITER) using laser welding technology, are presented. The influence of laser welding modes on the quality of formation, microstructure characteristics, and mechanical properties of a welded joint made of 10 mm thick 316L steel was studied. A coaxial nozzle was designed and manufactured to protect the weld pool with a curved trajectory. The mechanical properties of the welded joint are 98-100% that of the base metal, and the microhardness of the welded joint and base metal is in the range of 180-230 HV. It was established that the lower part of the weld metal on the fusion line has transcrystalline grains and differs in δ-ferrite content; due to a high welding speed, the ratio of the depth to the width of the welding seam is 14 times. The width of the rectilinear part of the seam is 15-20% larger than its curved part.
介绍了在制造国际热核聚变实验堆（ITER）模型过程中，利用激光焊接技术制造第一壁板支撑结构部件的实验研究结果。研究了激光焊接模式对由10毫米厚316L钢制成的焊接接头的成型质量、微观结构特征和力学性能的影响。设计并制造了一个同轴喷嘴，用于以弯曲轨迹保护熔池。焊接接头的力学性能为母材的98-100%，焊接接头和母材的显微硬度在180-230 HV范围内。结果表明，熔合线上焊缝金属的下部具有穿晶晶粒，且δ-铁素体含量不同；由于焊接速度高，焊缝深度与宽度之比为14倍。焊缝直线部分的宽度比其弯曲部分大15-20%。
