اثر فلز پرکننده بر خواص مکانیکی و تریبولوژیکی اتصال فولاد ۶۹۵۹/۱ با استفاده از فرآیند جوشکاری تیگ

In this study, the mechanical and tribological properties of ۴ different types of welding filler metals were examined on a ۱.۶۹۵۹ steel (DIN۳۵NiCrMoV۱۲-۵) by the Gas Tungsten Arc Welding process. The fillers used in this study include ER۷۰S-۶, ER۸۰S-G, ER۸۰S-Ni۱, ER۸۰S-B۲. The main reasons for choosing these fillers in this study are their availability and close chemical composition to the base metal. To evaluate the weld and quality of weld joints, tensile, impact, hardness and abrasion tests performed on the samples and related microstructures was investigated by optical microscope. The results indicated that the presence of molybdenum and chromium alloying elements in ER۸۰S-B۲ filler and related microstructure at HAZ has led to an increase in weld strength up to ۳۸ percent. The best and worst wear resistance obtained from the filler ER ۸۰S-Ni۱ and ER ۷۰S-۶ respectively. The best weld quality and mechanical properties were acquired in welding using ER ۸۰S-B۲ welding filler metal.

کلیدواژه ها:

Steel Weldability ، Mechanical Properties ، Tribology ، Filler Metal ، Gas Tungsten Arc Welding ، قابلیت جوشکاری فولاد ، خواص مکانیکی ، تریبولوژی ، فلزپرکننده ، جوش تیگ