چکیده مقاله
In this study, the corrosion behavior of the dissimilar welded joints of 304L austenitic stainless steel and A283 Grade C carbon steel is investigated For this purpose, the shieldmetal arc welding SMAW process with three different heat inputs was conducted using manual electrodes and E309L electrodes with DCEP polarity After the welding process, the microstructure of the base metals, weld metals and heat affected zone HAZ were examined using optical microscope OM and scanning electron microscope SEM The results showed that the decrease in heat input led to the formation of the spherical delta ferrite Also, clear interfaces were formed between the base metal A283 and the austenitic electrode sides The width of interfaces were increased by increasing the heat input The corrosion assessments were conducted using potentiodynamic tests in 3 5% NaCl solution It was found that the welded specimen at heat input of 1225 j / mm exhibited has the best corrosion resistance, which was attributed to the lack of defects and uniformity of the weld structure Moreover, it was realized that an improvement in corrosion resistance was observed by increasing the heat input This was due to decreasing the amount of delta ferrite in the weld microstructure
کلیدواژهها
نویسندگان
Hadis Sadat Mardanpour
Masters student,Isfahan University of Technology
Masoud Atapour
Associate Professor,Isfahan University of Technology
Mojtaba Esmaeilzade
Assistant Professor, Persian Gulf University
شیوه ارجاع
Mardanpour, Hadis Sadat and Atapour, Masoud and Esmaeilzade, Mojtaba,1399,Investigation of heat input effect on microstructure and corrosion properties in dissimilar welded joints of A283 GrC steel to 304L stainless steel via SMAW method,3rd International Conference on Welding and Non-Destructive Testing of Iran, 21st National Conference on Welding and Inspection and 10th National Conference on Non-Destructive Testing,Isfahan
ارائهشده در
مجموعه مقالات سومین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب ایران، بیست و یکمین کنفرانس ملی جوش و بازرسی و دهمین کنفرانس ملی آزمایش های غیرمخرب13 اسفند 1399 · اصفهان