Review of tools for friction stir welding and processing

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Journal titleCanadian Metallurgical Quarterly
Pages250261; # of pages: 12
SubjectBottom surfaces; Casting defect; Downward pressure; Environmental friendliness; Friction stir processing; Green manufacturing technique; Manufacturing applications; Mechanical and physical properties; Solid-state joining; Stir zones; Thin layers; Tool designs; Work pieces; Corrosion resistance; Energy efficiency; Friction stir welding; Gas welding; Joining; Mechanical properties; Probes; Shoulders (road); Tools; Processing
AbstractFriction stir welding (FSW) is a novel green manufacturing technique due to its energy efficiency and environmental friendliness. This solid state joining process involves a rotating tool consisting of a shoulder and/or a probe. The shoulder applies a downward pressure to the workpiece surface, constrains the plasticised material around the probe, generates heat through the friction and causes plastic deformation in a relatively thin layer under the bottom surface of the shoulder. The rotating probe mainly drags along, plasticises, and mixes the adjacent material in the stir zone, creating a joint without fusion. Friction stir processing (FSP), a variant of FSW, has been developed to manufacture composites, locally eliminate casting defects, refine microstructure and/or improve the associated mechanical and physical properties including strength, ductility, fatigue, creep, formability and corrosion resistance. However, major challenges such as tool design and wear currently limit the use of FSW/P for manufacturing applications, particularly for high melting temperature or high strength alloys. In this review, the FSW/P tools are briefly summarised in terms of the tool types, shapes, dimensions, materials and wear behaviours. © 2012 Crown in Right of Canada.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Aerospace Research
Peer reviewedYes
NPARC number21269544
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Record identifier9ff325c8-2a7a-4765-8a04-8f53053d1139
Record created2013-12-12
Record modified2016-05-09
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