Mediate Layer Alloys for Arc Butt Joining between High Manganese Steel and U71Mn Steel

Because of many differences of weldability between high manganese steel and rail steel, suitable welding materials are required besides special technological procedures. In this paper, electrodes made of two different alloy systems are analyzed and tested. The test results indicate that the deposited layer made of electrode of Mn-Cr-Ni alloy system has an extension rate of more than 40% and Akv >100J,the deposited metal made of electrode of Cr-Ni-Mo alloy system and CaO-CaF₂-SiO₂ slag system has an tensile strength of 855MPa,and δ₅ >20%, Akv >90J,which are higher than that of rail steel.