Welding between Fe-Cr-2Al-Si Damping Alloy and 1Cr18Ni9Ti Stainless Steel

The welding technology and quality of Fe-Cr-2Al-Si damping alloy and 1Cr18Ni9Ti steel have been investigated,with Tungsten Insert Gas Welding (TIG),and a high-alloy austenitic stainless welding wire.The microstructure of welded joints was investigated by means of metalloscope.The major results obtained are as follows:an excellent weld structure with austenite,a little ferrite and martensite was obtained,the tensile strength and bend performance in the welded joint zone were higher than that in the damping alloy.The applied welding method,filler materials and weld process can satisfied the welding tequiraments of these two kind of materials.In addition,the quality of weld is reliable.