Stored Energy and Annealing Behavior of Heavily Deformed Aluminium

Naoya Kamikawa; Xiao Xu Huang; Yuka Kondo; Tadashi Furuhara; Niels Hansen

doi:10.4028/www.scientific.net/MSF.715-716.367

Paper Titles

Recrystallization in Ultra-Fine Grain Structures of AA3104 Alloy Processed by ECAP and HPT
p.346

Direct Observations of Cube Nucleation from Intergranular Cube Segments in Cold Rolled Al-Mn
p.354

Warm Forming of FCC Poly Crystals: The Effect of Grain Size under Different Forming Conditions on the Softening Behavior
p.360

Recrystallized Grain Size in Single Phase Materials
p.361

Stored Energy and Annealing Behavior of Heavily Deformed Aluminium
p.367

Recrystallization and Grain Growth in Ultra Fine Grained Materials Produced by High Pressure Torsion
p.373

A Model for Recovery Kinetics of Aluminum after Large Strain
p.374

The Formation of Fine-Grained Structure in S304H-Type Austenitic Stainless Steel during Hot-To-Warm Working
p.380

Thermal Behavior of Nickel Deformed to Ultra-High Strain by High Pressure Torsion
p.387

HomeMaterials Science ForumMaterials Science Forum Vols. 715-716Stored Energy and Annealing Behavior of Heavily...

Stored Energy and Annealing Behavior of Heavily Deformed Aluminium

Abstract:

t has been demonstrated in previous work that a two-step annealing treatment, including a low-temperature, long-time annealing and a subsequent high-temperature annealing, is a promising route to control the microstructure of a heavily deformed metal. In the present study, structural parameters are quantified such as boundary spacing, misorientation angle and dislocation density for 99.99% aluminium deformed by accumulative roll-bonding to a strain of 4.8. Two different annealing processes have been applied; (i) one-step annealing for 0.5 h at 100-400°C and (ii) two-step annealing for 6 h at 175°C followed by 0.5 h annealing at 200-600°C, where the former treatment leads to discontinuous recrystallization and the latter to uniform structural coarsening. This behavior has been analyzed in terms of the relative change during annealing of energy stored as elastic energy in the dislocation structure and as boundary energy in the high-angle boundaries.

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Materials Science Forum (Volumes 715-716)

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367-372

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.715-716.367

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Online since:

April 2012

Authors:

Naoya Kamikawa, Xiao Xu Huang, Yuka Kondo, Tadashi Furuhara, Niels Hansen

Keywords:

Accumulative Roll Bonding (ARB), Aluminum (Al), Recrystallization, Severe Plastic Deformation (SPD), Stored Energy

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