Dissimilar Friction Welding of AISI 304 Austenitic Stainless Steel and AISI D3 Tool Steel: Mechanical Properties and Microstructural Characterization

摘要

In recent years, the continuous demand for dissimilar joining combination of various materials increasing in manufacturing sector for various applications such as power plants, nuclear, and aerospace applications. The joining of dissimilar metals using conventional fusion welding methods is exhibited in unsatisfactory joint strength. The use of solid-state welding methods is most suitable for joining of dissimilar combination in the current scenario. In this study, dissimilar joining of 304 austenitic stainless steel and D3 tool steel are joined using friction welding process to investigate the properties and joint interface characteristics. To identify the feasibility of joining dissimilar materials using friction welding process, the experiment is performed at different input welding conditions such as friction pressure and upset pressure were varying from minimum to maximum values to obtain the reliable joint strength. The friction welded joints were characterized using microscope observations at the weld interface and failure modes are discussed.