Abstract：In order to study the advantages of plasma arc welding in weathering steel plate， in the current study， thick 05CuPCrNi atmospheric corrosion resistant steel with 2 mm thick was respectively butt-welded by plasma arc and MAG butt welding. The welding joints were then tested by stretching， bending， metallographic， and hardness test. By comparison with the MAG welding joints in microstructure and mechanical properties， the results show that the strength of the welding joint of 05CuPCrNi atmospheric corrosion resistant steel by plasma arc welding strength was relatively increased by 6%， the ferrite and pearlite in welding joint organizations were more uniform and fine， no coarse massive ferrite and bainite appeared in MAG welding. The welding heat affected zone was narrow and the bending properties of welding joints by plasma arc welding wass good， while the hardness and hardness distribution were similar with that by MAG and no softening phenomenon occurred.
李 晨，许鸿吉，谢 明，董 强. 05CuPCrNi钢等离子弧焊焊接接头的组织与力学性能[J]. 钢铁, 2016, 51(8): 70-75.
LI Chen，XU Hong-ji，XIE Ming，DONG Qiang. Microstructure and mechanical properties of welding joint of 05CuPCrNi steel by plasma arc welding. Iron and Steel, 2016, 51(8): 70-75.
2016, Vol. 51 
