"2"^^ . . "RIV/26316919:_____/12:#0000363" . . "706-709" . . "1662-9760" . "Januar 2012" . "10.4028/www.scientific.net/MSF.706-709.1864" . . . . "Ultrafine grain structure evolution in AA6085 aluminium alloy processed by HPT at increased temperature"@en . . . "Zrn\u00EDk, Jozef" . . "Materials Science Forum" . . . "Ultrafine grain structure evolution in AA6085 aluminium alloy processed by HPT at increased temperature" . "CH - \u0160v\u00FDcarsk\u00E1 konfederace" . . . "[72F516DCCDFB]" . "http://www.scientific.net/MSF.706-709.1864" . "6"^^ . . "Ultrafine grain structure evolution during high preaaure torsion of aluminium alloy AA6082 is presented. Two different initial states of the alloy were investigated. The progress in structure refinement in dependence on the shear strain level was studied. The impact of different amount of strain introduced was analyzed at increased temperature. The results of microstructure analyses showed progress with respect to introduced effective strain. The observed heterogeneity in structure formation depended on strain level introduced. There was not observed a difference in structure refinement in dependence of the different initial thermal treatment of the alloy. The observed heterogeneity in ufg structure formation across the deformed discs was observed and no dependence of initial structure difference was observed. By increasing the strain level (number of turns performed), more homogenized UF grain structure was observed across the deformed discs, regardless the initial structural state of alloy. The effect of increased deformation temperature became evident and dynamic recrystallization modified formation of UF grained structure. The results on torque measurement versus the time showed that the torque required to deformed the samples icreased until the first turn, then as turns were increasing then kept constant."@en . . . . "RIV/26316919:_____/12:#0000363!RIV13-MSM-26316919" . . "175813" . "Ultrafine grain structure evolution in AA6085 aluminium alloy processed by HPT at increased temperature"@en . "Ultrafine grain structure evolution during high preaaure torsion of aluminium alloy AA6082 is presented. Two different initial states of the alloy were investigated. The progress in structure refinement in dependence on the shear strain level was studied. The impact of different amount of strain introduced was analyzed at increased temperature. The results of microstructure analyses showed progress with respect to introduced effective strain. The observed heterogeneity in structure formation depended on strain level introduced. There was not observed a difference in structure refinement in dependence of the different initial thermal treatment of the alloy. The observed heterogeneity in ufg structure formation across the deformed discs was observed and no dependence of initial structure difference was observed. By increasing the strain level (number of turns performed), more homogenized UF grain structure was observed across the deformed discs, regardless the initial structural state of alloy. The effect of increased deformation temperature became evident and dynamic recrystallization modified formation of UF grained structure. The results on torque measurement versus the time showed that the torque required to deformed the samples icreased until the first turn, then as turns were increasing then kept constant." . . . "High pressure torsion, SPD, Al alloy, structure refinement, TEM analysis, recrystallization, torque, deformation behaviour"@en . "Ultrafine grain structure evolution in AA6085 aluminium alloy processed by HPT at increased temperature" . . "4"^^ . . "Z(MSM2631691901)" . "Kraus, Libor" .