Influence of Welding Technology on the Structure, Mechanical Properties and Fracture Toughness of 09g2s Steel Welded Joints

摘要

The effect of direct current welding and adaptive pulse welding with current modulation on the structure and mechanical properties of a 09G2S steel welded joint under tensile and impact bending testing, as well as on its static, dynamic and cyclic crack resistance characteristics (fracture toughness), is comparatively evaluated. The efficiency of using the welding process with current modulation to increase the brittle fracture resistance of products and structural components made of low-carbon steel to operate in low-temperature climates is shown.