بررسی خواص مکانیکی جوش فولادضدزنگ SA۲۴۰-TP۳۱۶ و فولاد SA۵۱۶-GR۶۰ کلد شده با فولادضدزنگ SA۲۴۰-TP۳۱۶

Stainless steel cladding is the formation of an alloy by creating a thin layer of stainless steel on another metal. In this research, a layer of SA۲۴۰-TP۳۱۶ austenitic stainless steel was coated on SA۵۱۶-GR۶۰ steel. Experiments were conducted to compare the mechanical properties of SA۲۴۰-TP۳۱۶ and claded SA۵۱۶-GR۶۰ steel welds in order to investigate the possibility of replacing the SA۲۴۰-TP۳۱۶ steel alloy. Examining the results of the chemical analysis of SA۲۴۰-TP۳۱۶ alloy shows that the coating has a similar chemical composition to SA۲۴۰ alloy and with increasing depth, the hardness of the weld metal and the percentage of chromium is higher and the percentage of molybdenum in the weld alloy is lower. Comparing the ultimate strength of SA۵۱۶ alloy after cladding and welding with SA۲۴۰ stainless base alloy shows the improvement of tensile strength. In the first case, the strength changes in the range of ۴۷۰ to ۵۰۳ MPa and in the second case in the range of ۴۷۷ to ۵۷۰ MPa. The highest hardness was obtained in the heat affected area. Bending test showed that bending without cracking up to ۱۸۰ degree angle is a sign of weld metal remaining ductile. The results of the impact test also show the ability to absorb energy, especially around the voltage of ۱۵۰ volts.

کلیدواژه ها:

Welding ، Cladding ، Mechanical properties ، SA۵۱۶-GR۶۰ steel ، SA۲۴۰-TP۳۱۶ stainless steel. ، جوشکاری ، کلدینگ ، خواص مکانیکی ، فولاد ضدزنگ SA۲۴۰-TP۳۱۶ ، فولاد SA۵۱۶-GR۶۰