Advanced Materials for Emerging Applications (Innovations, Improvements, Inclusion and Impact)

Recent Advances in Friction Stir Welding of Magnesium Alloys for Use in Performance-Specific Applications

Author(s): Divyanshu, Kunal Chauhan, Jimmy Karloopia*, N. M. Suri and T. S. Srivatsan

Pp: 1-29 (29)

DOI: 10.2174/9789815196771124010004

* (Excluding Mailing and Handling)


Magnesium is the sixth most abundant material in the earth’s crust that finds its applications in the fields of automobiles, aerospace, and biomedical. With noticeable advances in the domain enveloping engineering and technology, there does exist a growing need for new and improved materials to meet the demands put forth by the industries spanning the aerospace and automobile sectors. One of the important requirements for a material is light in weight. Magnesium is one such promising material, which is lighter than aluminum making it an ideal candidate for selection and use in both performance-critical and non-performance critical applications in the domains specific to automobile, aerospace and even biomedical. There are various processing routes for the manufacturing of magnesium alloys, and there exists a need for the joining of the magnesium alloys. The conventional joining processes possess defects, such as porosity, which are detrimental to achieving acceptable to good mechanical properties. Friction Stir welding is one method of solid-state joining, which offers good properties of the weld. The technique of friction stir welding (FSW) operates by rotating and plunging a non-consumable tool into the interface of two workpieces that require to be joined. Promising advantages that are offered by friction stir welding (FSW) are eco-friendly, versatile, and energy efficient. This manuscript highlights (i) the friction stir welding processing technique, as well as recent and observable advances, (ii) the classification of the magnesium alloys, (iii) the welding tool and its influence on welding, microstructural development and mechanical properties of the friction stir welded magnesium alloy, (iv) welding parameters and its influence on governing the relationships between the weld and the workpiece, and (v) typical practical applications and the variants of friction stir welding (FSW).

Keywords: Alloys of magnesium, Base metal (BM), Dwelling, Fixture, Friction stir welding, Magnesium alloy, Magnesium composite, Stir zone (SZ), Tool, Tool probe, Thermomechanical affected zone (TMAZ), Welding.

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