Development of the PC-GMAW welding technology for TMCP steel in accordance with welding thermal cycle, welding technique, structure, and properties of welded joints
In this paper, the effect of the welding thermal cycle (WTC) on the structure and properties of the S460M steel heat affected zone (HAZ) metal has been studied. In particular, the changes in the mechanical properties vs the HAZ metal cooling rate in the 600÷500 °C temperature range was studied for S460M model samples, heat-treated in accordance with WTCs. The results from the experimental data refers to the static strength, ductility, and impact toughness values at the level of the base metal, as well as to structural changes in the seam. The weld metal and HAZ welded joints of S460M steel, made by pulsed arc welding, have shown adequately high resistance to brittle fracture, and at 20% greater strength. Thus, based on the obtained results, it is recommended to apply pulse-current gas metal welding of the thermo-mechanical cold processingsteel instead of conventional welding.
Bilik A., Kurashev R., Gorbatenko V., & Konovalov G. (2013). Application of TMCP rolled in welded metallic constructions. Industrial construction and engineering structures, 4, 1–4.
Lobanov L.M. (editor) (1993). Welded building structures (in Russian). Naukova Dumka, Kiev, p. 415.
Nazarov, A.V., Yakushev E., Shabalov I., Morozov Yu., & Kireeva T. (2014). Comparison of Weldability of High-Strength Pipe Steels Microalloyed with Niobium, Niobium and Vanadium. Metallurgist, 57, 911–917. https://doi.org/10.1007/s11015-014-9821-6
Odesskiy P., Molodtsov A., & Morozov Yu. (2011). New effective low-alloyed steels for building metallic constructions. Mounting and especial works in building (in Russian), 5, 20–25.
Poznyakov V., Jdanov S., & Maksimenko A. (2012). Structure and properties of welds made from S355J2 steel. Automat Weld, 8, 7–11.
Ragu Nathan S., Balasubramanian V., & Malarvizhi S. (2015). Effect of welding processes on mechanical and microstructural characteristics of high strength low alloy naval grade steel joints. Def Technol, 11, 308–317. https://doi.org/10.1016/j.dt.2015.06.001
Sarjevskiy V., & Sazonov V. (1981). Equipment for thermal cycle of welding imitating based on MSR-75 machine. Automat Weld, 5, 69–70.
Tilkin M., Bolshakov V., & Odesskiy P. (1983). Structure and properties of building steel (in Russian). Metallurgy, p. 287.
Ufuah E., & Ikhayere J. (2013). Elevated Temperature Mechanical Properties of Butt-Welded Connections Made with High Strength Steel Grades S355 and S460M. In: Jármai K., Farkas J. (eds) Design, Fabrication and Economy of Metal Structures. Springer, Berlin, Heidelberg 407–412. https://doi.org/10.1007/978-3-642-36691-8_62.