Microstructural evolution in commercial purity aluminum during high-pressure torsion

By Alexander Zhilyaev, K. Oh-ishi, Terence G. Langdon, T. Mcnelley. 2005

205 citations recorded by the source corpus.

An investigation was conducted to evaluate the microstructural evolution occurring in disks of commercial purity aluminum processed by high-pressure torsion (HPT) under constrained conditions. Microhardness measurements were taken to assess the variation in hardness across the diameters of disks subjected to different imposed strains and the microstructures were observed at the edges and in the centers of the disks using transmission electron microscopy. The results show the microhardness is lower and there is less grain refinement in the central regions of the disks in the initial stages of torsional straining but the microstructures become reasonably homogeneous across the disks at high imposed strains.

Subfields: Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/bcb5580b226e8838a64e410625ebc48a75d46e14

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In Materials Chemistry

In Mechanical Engineering

Citations in the corpus

Nanostructure and related mechanical properties of an Al–Mg–Si alloy processed by severe plastic deformation (2008, background): “owing that already four HPT rotations (e ∼6, γ =502, at r=5 mm, h=0.25 mm) lead to a saturation and homogenization of the hardness in the HPT sample for a number of rotation equal or larger than four [14,15]. Since the properties of the material look homogenous in the whole sample after HPT, it make”