Friction stir welding is now established as one of the
major welding processes applicable for several industrial
applications. Researchers are striving for improving the quality of
the welds by experimenting with improvised techniques and process
parameters. Underwater friction stir welding and vibration assisted
friction stir welding are the major advancements in the regard of
friction stir welding. The articles comparing the new variants of
friction stir welding are rare. I this article, a comparison among
conventional friction stir welding, underwater friction stir welding,
vibration assisted friction stir welding and underwater vibration
assisted friction stir welding is conducted. The findings illustrated
that tensile strength and hardness of underwater friction stir
welding and underwater vibration assisted friction stir welding are
higher than conventional friction stir welding and vibration assisted
friction stir welding processes. Frictional heating and sudden cooling
have resulted in quality joints. The joint characteristic of
underwater friction stir welding is better than vibration-assisted
friction stir welding. |
