Journal ArticleDOI
Microstructure and mechanical properties of steel/TiC nano-composite surface layer produced by friction stir processing
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A steel/TiC nano-composite surface layer with ultra fine grains of less than 600nm was fabricated on mild steel substrate by introduction of nano-sized TiC powder into the stir zone employing four passes of friction stir processing as mentioned in this paper.Abstract:
A steel/TiC nano-composite surface layer with ultra fine grains of less than 600 nm was fabricated on mild steel substrate by introduction of nano-sized TiC powder into the stir zone employing four passes of friction stir processing. TiC clusters were formed after the first pass. Sequential break-up of clusters and refinement of matrix grains were caused by subsequent FSP passes. A near uniform dispersion of nano-sized TiC particles was achieved after the fourth pass. The fabricated nano-composite layer exhibited a maximum micro hardness value of ~ 450HV; this is much greater than 185 and 130HV of the friction stir processed layer without introduction of TiC powder and as-received substrates, respectively. Moreover, a significant improvement in wear resistance of the nano-composite layer was observed as compared with that of the as-received substrate. The enhanced properties are attributed to the uniform dispersion of hard nano-sized TiC reinforcements in a matrix of ultra fine dynamically recrystallized grains.read more
Citations
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Journal ArticleDOI
Surface composites by friction stir processing: A review
TL;DR: A comprehensive review of surface composites via friction stir processing is presented in this article, where the underlying mechanisms in strengthening of FSP-processed surface composite are discussed with reported models.
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 based welding and processing technologies - processes, parameters, microstructures and applications: A review
G.K. Padhy,Chuansong Wu,S. Gao +2 more
TL;DR: Friction stir welding (FSW) has achieved remarkable success in the joining and processing of aluminium alloys and other softer structural alloys, however, it has not been entirely successful in the manufacturing of different desired materials essential to meet the sophisticated green globe requirements as discussed by the authors.
Journal ArticleDOI
Friction stir processing – State of the art
TL;DR: In this article, the main application and achievements of FSP processes are presented, based on literature review, and the last part is focused on microstructure refinement and information about friction stir alloying as well as friction stir processing with ultrasonic vibration.
Journal ArticleDOI
Welding processes for wear resistant overlays
Patricio F. Mendez,Nairn Barnes,Kurtis Bell,S. Borle,Satya S. Gajapathi,Stuart D. Guest,H. Izadi,Ata Kamyabi Gol,Gentry Wood +8 more
TL;DR: A comprehensive survey of welding processes used to deposit wear resistant overlays is presented in this paper, based on both literature review and research work performed at the Canadian Centre for Welding and Joining.
References
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Book
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Journal ArticleDOI
Friction stir processing: a novel technique for fabrication of surface composite
TL;DR: In this article, a surface modifying technique, friction stir processing (FSP), has been developed for fabrication of surface composite, and the surface composites have excellent bonding with the aluminum alloy substrate.
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
Recrystallization mechanisms during friction stir welding/processing of aluminum alloys
TL;DR: In this article, the applicability of hot working of metals and alloys is reviewed in the context of their applicability to friction stir welding (FSW) and friction stir processing (FSP) and two of these models are used to interpret microstructure and microtexture data for two aluminum alloys subjected to FSP.