A research paper on defects in friction stir welding.

Welding of the two metal are become advance with technological innovation. Fusion method of the material is also incorporated in the welding of the aluminum, specially die casted aluminum A number of the experiment had been done to find out the best way to weld the aluminum and method come as the friction stir welding (FSW). The optimize condition were created for the welding and analyzed to check it the problem associated with the aluminum welding. the result for the condition is come out as optimum condition will have depended upon the down force of the plunge tool. During the analysis of the welding three different conditions have been notify as first condition was related with excess of the passing heat which results in the more flash mass and second one is produced when the proper heat is not passing to the work piece and formed a cavity and last one is cavity formation due to abnormal melting of the metal. The tool plunges down force effect is low for this aspect of defect, although the magnitude of the imperfection due to inadequate heat contribution decreases meaningfully as the down force increases. [ABSTRACT FROM AUTHOR]