| Description |
xii, 97 leaves : illustrations ; 28 cm. |
| Summary |
"Friction stir welding (FSW) was invented as a solid-state joining process for welding materials at temperatures lower than the melting point of the material. Friction stir processing (FSP) was developed as a modification to FSW, and is used to improve mechanical properties locally through microstructural refinement. FSP uses a non-consumable rotating tool with a pin and shoulder inserted into the material to be processed and traversed along the path of interest. As a result of tool action and subsequent material movement, a processed region of refined microstructure is created along the traverse direction. The mechanical properties of the material in the processed region improve as a result of the microstructural refinement. The advancing technologies and increasing complexities in operating conditions of components necessitate design and development of economical, energy-efficient and high performance materials in various fields. Meeting an overall objective of obtaining reliable properties with the cost constraints is yet a challenge in many materials. This has broadened the scope of employing newer technologies like FSP to improve the properties of existing materials cost effectively. However, a major challenge for using such improved materials after FSP in actual applications demands an effective elimination or reduction in property variations to obtain reliable performance. The present work investigated the effectiveness of FSP in surpassing such a challenge in sand cast Al F357 alloy"--Abstract, leaf iv. |
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