To study the weldability of inconel 625 and stainless steel 410 using different flux and filler material

Abstract

Welding has an important role in every production industry, without the advancement in welding many industries such as automobile, aviation, machinery automation, construction and many more would come to a standstill. In this research the welding of martensite stainless steel 410 grade along with nickel based super alloy named Inconel 625 consisting of different variety of flux such as silicon dioxide, chromium trioxide, titanium dioxide with filler metal ERNiCrMo-3. The main purpose of this study is to find which flux serves the best in case of considered parameters such as hardness, toughness and the penetration of the weld. The results of this study were derived by performing tests in different machines like ultimate tensile test in order to find the tensile strength, Charpy impact apparatus to observe the toughness of the metal welded and Vickers hardness apparatus for finding the hardness of the welded metal. The microscopic appearances of the materials were examined with the help of optical microscopes. The final results show that Cr2O3 shows good penetration and better quality of join under the microscopic tests without any level defects. The metal fabricated with Cr2O3 flux shows more impact strength than the other fabricated materials.