Physical Nature of the Processes in Forming Structures, Phase and Chemical Compositions of Medium-Carbon Steel Welds

[摘要] This work presents peculiarities of forming a structure, phase and chemical composition while welding medium-carbon steels (Steel 45) depending on a heat content of molten electrode metal droplets when using welding power sources having different power parameters. It was experimentally established that the power inverter provides the decreased heat input into droplets of electrode metal during the welding process. This stimulates obtaining a fine-grained structure of the deposited metal and heat affected zone, reduces the extent of the HAZ that enhances working properties of welded joints.

[发布机构] Yurga Institute of Technology National Research, Tomsk Polytechnic University, Leningradskaya 26, Yurga; 652055, Russia^1;Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Akademichesky, 2/4, Tomsk; 634055, Russia^2;Seversk Institute of Technology, National Research Nuclear University MEPhI, Kommunistichesky 65, Seversk; 636036, Russia^3

[效力级别] 经济学 [学科分类] 工业工程学

[关键词] Chemical compositions;Electrode metals;Fine-grained structure;Medium-carbon steels;Power parameters;Welding power source;Welding process;Working properties