RT Journal Article T1 Influence of the process parameters on the quality and efficiency of the resistance spot welding process of advanced high-strength complex-phase steels A1 Morales Sánchez, Gerardo A1 Collazo Fernandez, Antonio A1 Doval Gandoy, Jesús K1 3315 Tecnología Metalúrgica K1 3306 Ingeniería y Tecnología Eléctricas K1 3316.14 Soldaduras AB In this study, the effects of electrical characteristics of an inverter combined with main welding parameters on the resistance spot weldability of advanced high strength steels (AHSS) CP1000 is investigated. The main welding parameters, current and time, were varied. The effects on the geometry and microstructure of the weld spot, the diameter of the weld pad, the hardness, the shear strength, and the efficiency of the process were studied, and the results were compared for two switching frequencies of the medium frequency converter. Furthermore, the weldability lobes were obtained as a function of the shear strength, for both frequencies. This work shows that the quality of the welding, in the established terms, is better when a lower frequency is used, even though the parameterization of the welding equipment can be easier for higher frequencies. PB Metals SN 20754701 YR 2021 FD 2021-09-28 LK http://hdl.handle.net/11093/2551 UL http://hdl.handle.net/11093/2551 LA eng NO Metals, 11(10): 1545 (2021) NO Agencia Estatal de Investigación | Ref. PID2019-105612RB-I00 / AEI / 10.13039 / 501100011033 DS Investigo RD 14-sep-2024