The role of intermetallic compounds and composite-like structure development during dissimilar friction stir welding of aluminum to brass on metallurgical and flexural characteristics

Abstract

In this study, the effects of developed Intermetallic Compounds (IMCs) and composite-like structure on metallurgical and flexural characteristics of the Friction Stir Welded (FSWed) joints were scrutinized and explored using OM, SEM equipped with EDS, and three-point bending test. Al2Cu was the main developed interfacial IMCs in the sound join; besides existence of a lamellar composite structure within the stir zone. The maximum bending angle was reached beyond 150 without any failure for optimum joint caused by proper mixing of materials. Thinness, continuity, and uniformity were the main observed characteristics of developed IMCs in the sound joint. 2016 IEEE.