Influence of Purity on the Dynamic Recrystallization of Metals and Alloys

Montheillet, F.; Coze, J. Le

doi:10.1002/1521-396x(200201)189:1<51::aid-pssa51>3.0.co;2-m

Cited by 40 publications

(15 citation statements)

References 11 publications

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“…Recrystallization of high purity aluminum was also observed after ECAP processing [20]. Pure aluminum is material with high stacking fault energy so it is susceptible for dynamic recrystallization, but recent research started describing discontinuous dynamic recrystallization as a main mechanism that occur in pure aluminum processed by SPD [20,21]. In present research even if dynamic recrystallization occurred, it was incomplete, what is suggested by two peaks of grain size.…”

Section: Discussionmentioning

confidence: 99%

Texture and Microtexture of Pure (6N) and Commercially Pure Aluminum after Deformation by Extrusion with Forward-Backward Rotating Die (Kobo)

Bieda¹,

Boczkal²,

Koprowski³

et al. 2016

Archives of Metallurgy and Materials

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Pure aluminium (6N) and commercially pure aluminium (99.7) was deformed by KOBO method. Microstructure and texture of both materials after deformation was analyzed by means of scanning and transmission electron microscopy. Advanced methods of crystallographic orientations measurements like Electron Backscatter Diffraction -EBSD (SEM) and microdiffraction (TEM) was used. Grain size distribution and misorientation between grains in cross and longitudinal sections of the samples were analyzed. Differences in size and homogeneity of the grains were observed in both materials. Pure aluminium was characterized by larger grain size in both sections of extruded material. Whereas commercially pure aluminium reveals smaller grain size and more homogeneous and stable microstructure.

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Section: Discussionmentioning

confidence: 99%

Texture and Microtexture of Pure (6N) and Commercially Pure Aluminum after Deformation by Extrusion with Forward-Backward Rotating Die (Kobo)

Bieda¹,

Boczkal²,

Koprowski³

et al. 2016

Archives of Metallurgy and Materials

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“…Furthermore, the spacing of both types of boundaries decreases with increasing deformation, indicating that grain subdivision continues to refine at high strain rate. By increasing the misorientation, this process leads to the formation of new high-angle grain boundaries, the percentage of which increases at high strains [22,23]. This mechanism of grain refinement is known as continuous recrystallization which is, as mentioned before, the mechanism of grain refinement in ECAP.…”

Section: Microstructurementioning

confidence: 99%

Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

et al. 2013

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“…These submicron-sized grains are the newly formed recrystallized grains that contribute to the high amount of HAGB and lead to bimodal misorientation distribution for the copper. The anomalous behavior of copper is a result of the self-organization of microstructure [23] leading to cDRX, which is attributed to its lower melting point and higher strain hardening rate.…”

Section: B Origin Of Hagb At a High Strain Ratementioning

confidence: 99%

Effect of Strain Rate on Evolution of the Deformation Microstructure and Texture in Polycrystalline Copper and Nickel

Gurao

Kapoor

Suwas

2010

Metall Mater Trans A

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The evolution of crystallographic texture in polycrystalline copper and nickel has been studied. The deformation texture evolution in these two materials over seven orders of magnitude of strain rate from 3 9 10 À4 to~2.0 9 10 +3 s À1 show little dependence on the stacking fault energy (SFE) and the amount of deformation. Higher strain rate deformation in nickel leads to weaker 101 h i texture because of extensive microband formation and grain fragmentation. This behavior, in turn, causes less plastic spin and hence retards texture evolution. Copper maintains the stable end 101 h i component over large strain rates (from 3 9 10 À4 to 10 +2 s À1 ) because of its higher strain-hardening rate that resists formation of deformation heterogeneities. At higher strain rates of the order of 2 9 10 +3 s À1 , the adiabatic temperature rise assists in continuous dynamic recrystallization that leads to an increase in the volume fraction of the 101 h i component. Thus, strain-hardening behavior plays a significant role in the texture evolution of facecentered cubic materials. In addition, factors governing the onset of restoration mechanisms like purity and melting point govern texture evolution at high strain rates. SFE may play a secondary role by governing the propensity of cross slip that in turn helps in the activation of restoration processes.

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Influence of Purity on the Dynamic Recrystallization of Metals and Alloys

Cited by 40 publications

References 11 publications

Texture and Microtexture of Pure (6N) and Commercially Pure Aluminum after Deformation by Extrusion with Forward-Backward Rotating Die (Kobo)

Texture and Microtexture of Pure (6N) and Commercially Pure Aluminum after Deformation by Extrusion with Forward-Backward Rotating Die (Kobo)

Investigation of texture and mechanical properties of copper processed by new route of equal channel angular pressing

Effect of Strain Rate on Evolution of the Deformation Microstructure and Texture in Polycrystalline Copper and Nickel

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