Microstructural and mechanical characteristics of an AZ61 magnesium alloy processed by high pressure torsion
Microstructural and mechanical characteristics of an AZ61 magnesium alloy processed by high pressure torsion
Experiments were conducted on an AZ61 magnesium alloy to evaluate the microstructural characteristics and the mechanical properties after processing by High-Pressure Torsion (HPT). The results show that processing by HPT produces excellent grain refinement with average grain sizes of ~0.22 and ~0.11 µm after processing at 423 K and room temperature, respectively. Tensile testing after HPT revealed the potential for achieving superplastic elongations with a maximum recorded elongation of 620% when testing at a temperature of 473 K. Using microhardness measurements, it is demonstrated that the microstructure gradually evolves with increasing torsional straining in HPT so that ultimately there is a reasonably homogeneous structure across the disk.
76-83
Harai, Yosuke
f5418a6f-74cd-4ae4-b72b-4ef44c9cd695
Kai, Masaaki
d1f0cbdd-bbe0-465a-8d68-fa8f71db0b03
Kaneko, Kenji
59fbdb7b-cec8-4d21-a877-4a6c24084b63
Horita, Zenji
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Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2008
Harai, Yosuke
f5418a6f-74cd-4ae4-b72b-4ef44c9cd695
Kai, Masaaki
d1f0cbdd-bbe0-465a-8d68-fa8f71db0b03
Kaneko, Kenji
59fbdb7b-cec8-4d21-a877-4a6c24084b63
Horita, Zenji
011521b8-3b29-494b-bf3f-346827ddbcce
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Harai, Yosuke, Kai, Masaaki, Kaneko, Kenji, Horita, Zenji and Langdon, Terence G.
(2008)
Microstructural and mechanical characteristics of an AZ61 magnesium alloy processed by high pressure torsion.
Materials Transactions, 49 (1), .
(doi:10.2320/matertrans.ME200718).
Abstract
Experiments were conducted on an AZ61 magnesium alloy to evaluate the microstructural characteristics and the mechanical properties after processing by High-Pressure Torsion (HPT). The results show that processing by HPT produces excellent grain refinement with average grain sizes of ~0.22 and ~0.11 µm after processing at 423 K and room temperature, respectively. Tensile testing after HPT revealed the potential for achieving superplastic elongations with a maximum recorded elongation of 620% when testing at a temperature of 473 K. Using microhardness measurements, it is demonstrated that the microstructure gradually evolves with increasing torsional straining in HPT so that ultimately there is a reasonably homogeneous structure across the disk.
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Published date: 2008
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 64170
URI: http://eprints.soton.ac.uk/id/eprint/64170
ISSN: 1347-5320
PURE UUID: e50815c9-2cc4-43e3-bdfd-ad2269dd689e
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Date deposited: 04 Dec 2008
Last modified: 16 Mar 2024 03:28
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Author:
Yosuke Harai
Author:
Masaaki Kai
Author:
Kenji Kaneko
Author:
Zenji Horita
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