2015
DOI: 10.1016/j.msea.2014.10.048
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Cryogenic friction-stir processing of ultrafine-grained Al–Mg–TiO2 nanocomposites

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Cited by 99 publications
(31 citation statements)
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“…During FSW, a small tool tilt angle can form a less-defect processed region via increased axial impact loading and material flow [25]. Many FSP researchers have drawn on this concept to make the reinforced particles distribute in the matrix more uniformly [6,12,26,27]. The tool tilt angle in FSP process is usually less than 5 • .…”
Section: Influence Of Process Parametersmentioning
confidence: 99%
“…During FSW, a small tool tilt angle can form a less-defect processed region via increased axial impact loading and material flow [25]. Many FSP researchers have drawn on this concept to make the reinforced particles distribute in the matrix more uniformly [6,12,26,27]. The tool tilt angle in FSP process is usually less than 5 • .…”
Section: Influence Of Process Parametersmentioning
confidence: 99%
“…[2,3] Severe plastic deformation (SPD) methods are being extensively used to develop bulk UFG composites. Accumulative roll bonding (ARB), [4,5] equal channel angular pressing (ECAP), [6] high-pressure torsion (HPT), [7] and friction stir processing (FSP) [8,9] are well-established SPD techniques used to develop bulk UFG composites. These deformation techniques store a high fraction of dislocation density in the matrix, refine the microstructure in the UFG/NS regime and hence impart extraordinary properties to UFG composites.…”
Section: Introductionmentioning
confidence: 99%
“…In this process, a nonconsumable rotating tool containing a shoulder and a pin with specific design and geometry is plunged into the surface to be modified and after frictional heating, which then travels along the specific direction to stir the surrounding area due to the high temperature severe plastic deformation (SPD) caused by extruding the solidified materials from leading to trailing edge (Nandan et al, 2008). Despite the widespread applications of this process for processing of ultrafine grained metals/alloys (Hofmann & Vecchio, 2005;Khodabakhshi et al, 2015a), homogenising powder metallurgy parts (Khodabakhshi et al, 2013;Liu et al, 2014b), and modification of casting products (Mahmoud, 2013), it has only recently attracted significant interest for fabrication of metal matrix nanocomposites (Mishra et al, 2003;Mishra & Ma, 2005;Khodabakhshi et al, 2015e).…”
Section: Introductionmentioning
confidence: 99%
“…Therefore, improvement the mechanical performance of the Al-Mg alloys can be considered a crucial engineering challenge. Refining the grain structure of aluminium alloy into the nano-or ultrafine scale ranges by means of severe plastic deformation (SPD) (Khodabakhshi et al, 2015b) and reinforcing the ductile Al-Mg alloy metal-matrix with stronger and stiffer nanosized reinforcing agents to make an Al-matrix nanocomposites (Khodabakhshi et al, 2015a(Khodabakhshi et al, , 2015c(Khodabakhshi et al, , 2017a are two effective approaches for strengthening of Al-Mg alloys. In particular, nanocomposite fabrication is a very promising route considering there are fewer downstream processing limitations, because superior mechanical strength can be attained while simultaneously increasing the thermal stability or even the ductility (Zhou et al, 2003;Khodabakhshi et al, 2014bKhodabakhshi et al, , 2015dKhodabakhshi et al, , 2017a.…”
Section: Introductionmentioning
confidence: 99%