Friction Welding: An Important Material Joining Technique
Friction welding is a solid-state joining process where coalescence is produced by the heat generated by the rubbing of the materials against each other. Friction welding is used for joining the materials due to its advantages such as low heat input, ability to join dissimilar materials and environment friendliness. Friction welding can be used to join different kinds of materials which cannot be welded by conventional fusion welding processes. The rotational speed and the axial pressures are the important parameters that play the major role in determining the strength of the joint. In this study an attempt was made to join austenitic stainless steel (AISI 304) with low alloy steel (AISI 1021) at higher rotational speed (1600 rpm) and at different axial pressures and then determining the strength of the joint by means of mechanical properties such as tensile strength, torsional strength, impact strength and micro hardness.
Keywords - Friction welding; dissimilar materials; mechanical testing.