Journal ArticleDOI
Microstructural characteristics and mechanical properties of Ti-6Al-4V friction stir welds
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Friction stir welding (FSW) was applied to 3mm-thick Ti-6Al-4V plates under different rotational speeds as discussed by the authors, and failure-free welds were successfully produced at rotational speed of 400 and 500rpm.Abstract:
Friction stir welding (FSW) was applied to 3 mm-thick Ti–6Al–4V plates under different rotational speeds. Defect-free welds were successfully produced at rotational speeds of 400 and 500 rpm. The base material (BM) had a deformed α/β lamellar microstructure. FSW produced a full lamellar structure with refined prior β grains in the SZ, while the HAZ contained a bimodal microstructure consisting of the equiaxed primary α and α/β lamellar structure within the prior β structure. An increase in rotational speed increased the sizes of α colonies and prior β grains. The SZ exhibited higher hardness than the BM, with the lowest hardness found in the HAZ. Results of the transverse tensile test showed that all welds fractured in the HAZ and that they exhibited lower strength and elongation than the BM. The tensile test for only the SZ showed it to be characterized by higher strength and elongation than the BM.read more
Citations
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Journal ArticleDOI
Friction stir welding/processing of metals and alloys: A comprehensive review on microstructural evolution
Akbar Heidarzadeh,Sergey Mironov,Rustam Kaibyshev,Gürel Çam,Aude Simar,Adrian P. Gerlich,Farzad Khodabakhshi,Amir Mostafaei,David P. Field,Joseph D. Robson,Alexis Deschamps,Philip J. Withers +11 more
TL;DR: In this article, a comprehensive understanding of the fundamentals of the microstructural evolution during FSW/P has been developed, including the mechanisms underlying the development of grain structures and textures, phases, phase transformations and precipitation.
Journal ArticleDOI
Friction stir welded structural materials: beyond Al-alloys
TL;DR: Friction stir welding (FSW) is widely accepted to be one of the most significant welding techniques to emerge in the last 20 years and has been widely used for joining alloys in various industrial applications.
Journal ArticleDOI
Joining by plastic deformation
TL;DR: In this article, the authors provide an overview of the state of the art in such joining processes, including cold welding, friction stir welding, self-pierce riveting, mechanical clinching and joining by forming.
Journal ArticleDOI
Texture Development in Friction Stir Welds
R. W. Fonda,Keith E. Knipling +1 more
TL;DR: The shear textures that develop in friction stir welds are reviewed and discussed in this article, where the authors show that a predominant shear texture with the close packed directions aligned with the shear direction (SD) and the close-packed plane normal perpendicular to both the SD and the normal is obtained in all the materials examined.
Book
Friction Stir Welding and Processing : Science and Engineering
TL;DR: Friction stir welding as discussed by the authors is a well-studied process for friction-stir welding, where the process parameters, material flow and micro-structural evolution, tool features and role are modeled and simulated.
References
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Book
Friction Stir Welding and Processing
Rajiv S. Mishra,Zongyi Ma +1 more
TL;DR: Friction stir welding (FSW) is a relatively new solid-state joining process that is used to join high-strength aerospace aluminum alloys and other metallic alloys that are hard to weld by conventional fusion welding as discussed by the authors.
Journal ArticleDOI
Influence of processing on microstructure and mechanical properties of (α+β) titanium alloys
TL;DR: In this paper, the relationship between processing, microstructure, and mechanical properties of two-phase (α+β) titanium alloys is summarized and the advantages of a bi-modal (duplex) type of micro-structure usable for most applications are discussed.
Journal ArticleDOI
Effects of friction stir welding on microstructure of 7075 aluminum
TL;DR: In this article, the microstructural changes effected by friction stir welding of 7075 Al. were evaluated and the authors concluded that friction-stir welding has the potential to avoid significant changes in microstructure and mechanical properties.
Journal ArticleDOI
Microstructure, mechanical properties and residual stresses as a function of welding speed in aluminium AA5083 friction stir welds
TL;DR: In this article, the results of microstructural, mechanical property and residual stress investigations of four aluminium AA5083 friction stir welds produced under varying conditions were reported, and it was found that the weld properties were dominated by the thermal input rather than the mechanical deformation by the tool.