1985
DOI: 10.1016/0036-9748(85)90268-6
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Microstructural evolution in Al deformed to strains of 60 at 400°C

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Cited by 185 publications
(108 citation statements)
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“…This result is consistent with that obtained in Al and Al alloys after large torsion deformation [3]. Under these conditions, an equilibrium grain structure independent of the initial grain size is developed [24,48]. The same tendency was observed in materials processed by ECAP and HPT.…”
Section: Hot Deformation Behaviorsupporting
confidence: 90%
See 1 more Smart Citation
“…This result is consistent with that obtained in Al and Al alloys after large torsion deformation [3]. Under these conditions, an equilibrium grain structure independent of the initial grain size is developed [24,48]. The same tendency was observed in materials processed by ECAP and HPT.…”
Section: Hot Deformation Behaviorsupporting
confidence: 90%
“…5) cannot be explained in terms of discontinuous or geomet-ric dynamic recrystallization. This is because neither signal of grain boundary migration nor serrated grain boundaries are observed in the deformed microstructures [37][38][39][40][41]. Moreover, deformation shear bands associated with adiabatic heating are not observed under the testing conditions of this study, which generally should produce softening [42].…”
Section: Hot Deformation Behaviormentioning
confidence: 70%
“…The onset of geometric dynamic recrystallization (GDRX) may be observed as the strain increases during DRV when the separation of prior boundaries approaches the subgrain size [3,5,22]. The boundary separation in the normal direction, d N , during hot or warm rolling may be taken as d N ffi d 0 exp(Àe), where d 0 is the initial grain size and e is the strain.…”
Section: Dynamic Restoration During Hot Workingmentioning
confidence: 99%
“…Usually, when the FSW process is applied to the conventional metals or alloys, a very refined microstructure will be formed in the stir zone of the joints. The grain refinement process is generally believed to be driven by the grain subdivision or the continuous dynamic recrystallization, termed geometric dynamic recrystallization which was first recognized by Humphreys and McQeen [35][36][37]. The continuous dynamic recrystallization is characterized by a strain-induced progressive rotation of the subgrains with little boundary migration during the FSW process and is prone to It is interesting to note that in the stir zone the 1050 Al showed an average grain size quite larger than 300 nm of the BM, while the 6061 Al showed a fairly refined microstructure compared with that 18 µm of the BM.…”
Section: Methodsmentioning
confidence: 99%