Friction stir welding (FSW) is the process of joining a relatively new solid-state. This joining method energy-efficient, environmentally-friendly and versatile. In particular, it is difficult to weld by conventional fusion welding, which can be used to join the high-strength aerospace Al alloy and other metal alloys. This paper uses frictional heat and a non-consumable rotating welding equipment to produce plastic deformation went invented by The Welding Institute (TWI) in 1991 Stir friction welding (FSW) which focuses welding position; In addition, the material to affect the formation of a joint in a solid state. Understanding of FSW and Friction stir processing (FSP) and the current state of development is addressed. Particular emphasis has been: (a) Mechanisms responsible for the formation of the weld and micro-structural refinement, and (b) the resulting microstructure and FSW / FSP effect of parameters on the final mechanical properties. At this stage, technology diffusion has largely overcome the basic understanding of the micro-structural development and microstructure-property relationships. FSW certain industrial applications FSWa leap in manufacturing technology, aerospace, shipbuilding and auto industries are also presented.

Welding process may be similar or dissimilar metals. Welding of dissimilar metals are different contain a variety of metals with different chemical composition. This research paper went gave a brief review of the work carried out on the hardness of the weld area and the welded joints. The laser light energy can be focused in creating that content can be converted into heat energy. By employing a light beam in the electromagnetic spectrum, the visible or near-infrared part, we have the energy to be processed using fixed or fiber optic beam delivery optics can transmit content from your source. Need a customized technology in today's world which is rapidly growing day included easily in two propagation materials. These research two disparate materials in letters that had AISI 304 and was taken to the laser welding joint configurations adopt AISI 202. Three process parameters, the scan speed; four levels of optimization was pulse frequency and pulse diameter. Gray Taguchi method using the specified parameters with the L16 Orthogonal Array was to customize. It has been found that raises laser welding optimum quality characteristics with a pulse frequency of 45 mm / scanning speed of minutes, 0.3 mm Pulse diameter and 7 Hz. These levels length of weld hardness zone 304.77 HV and Heat Affected Zone in went were 0.0852 mm.