Friction Welding- A Review

Conjoining of divergent materials is one of the most indispensable need of industries. There are many conventional welding techniques that have been developed to obtain suitable joints in various applications. Conventional fusion welding techniques of many such dissimilar metal combinations is not expedient due to the accumulation of brittle and low melting intermetallics due to large differences in melting points, difference in metallurgical properties and thermal mismatch. However, friction welding is a joining process that allows more materials and material combinations to be joined than with any other welding process. Friction welding is a solid state joining process which is extensively used 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.