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The application of fusion welding process is restricted to certain grades of alloys and materials. Solid-state joining process offers greater advantages over fusion welding process such as fumeless and effective joining, minimum or no preparation time, environment friendly, etc. One such solid-state joining process is friction stir welding (FSW), which uses a non-consumable rotating tool. This rotating tool joins the two faying surfaces of the workpiece by forging them. This joining technique successfully joins metals, alloys and metal matrix composite (MMC), which are considered as difficult to join using conventional processes. The present study is an endeavor to review a specific domain of FSW, i.e. joining of MMCs. The initial part of the study provides a detailed introduction about the FSW process, and along with it, an overview of the published literature related to FSW of alloys has been presented. The later part of the study pays specific attention to macrostructure, microstructure, joint properties and residual stresses in welded joints along with wearing of tool during welding of MMC. The observations of this study provide a basis for future research in the specified domain. |
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