Mechanical and Metallurgical Characterization of Copper-Based Welded Joint Using Brass as Filler Metal Developed by Microwave Technique

Welding of copper and copper alloys through conventional welding processes not only exhibit various difficulties during the joining process but also causes the production of harmful gases, which affect human life. This work deals with the joining of copper-based materials using microwave radiation and brass as a tiller material without any harmful gases. The resulted joints are characterized by using metallurgical microscopy. Mechanical characterizations are done through tensile testing, Brinell's hardness testing, corrosion testing, and specific strength testing. The results reveal that the successful joining of copper-based materials is possible by using brass based powder as tiller material via microwave radiation. The resulted joints have uniform metallurgical structure and lower defects. It confirms better diffusion between materials at joints. Higher mechanical strength is resulted due to lower processing defects. The results show that the ultimate tensile strength and hardness obtained in this study are higher than the base material.