Grain boundary phenomena in an ultrafine-grained Al-Zn alloy with improved mechanical behavior for micro-devices
Grain boundary phenomena in an ultrafine-grained Al-Zn alloy with improved mechanical behavior for micro-devices
The microstructural and mechanical properties of an ultrafine-grained (UFG) Al–Zn alloy processed by high-pressure torsion (HPT) are investigated using depth-sensing indentations, focused ion beam, scanning electron microscopy and scanning transmission electron microscopy. Emphasis is placed on the microstructure and the effects of grain boundaries at room temperature. The experiments show the formation of Zn-rich layers at the Al/Al grain boundaries that enhance the role of grain boundary sliding leading to unique plastic behavior in this UFG material. The occurrence of significant grain boundary sliding at room temperature is demonstrated by deforming micro-pillars. Our results illustrate a potential for using UFG materials as advanced functional materials in electronic micro-devices.
1000-1009
Chinh, Nguyen Q.
8e075269-61a9-469c-8f71-3d52eb37dadc
Valiev, Ruslan Z.
ede7fb12-54a3-4d6f-a1a7-f04cc6549934
Sauvage, Xavier
b08d7648-7ad1-4086-b151-33def849eb8f
Varga, Gábor
184e7acb-e901-416c-863c-77ef2c37d0f9
Havancsák, Károly
2337b349-341a-45c0-b338-62fce045f9f6
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Straumal, Boris B.
32d96dd4-70d8-4bcd-bf39-42dc4bd73c43
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
August 2014
Chinh, Nguyen Q.
8e075269-61a9-469c-8f71-3d52eb37dadc
Valiev, Ruslan Z.
ede7fb12-54a3-4d6f-a1a7-f04cc6549934
Sauvage, Xavier
b08d7648-7ad1-4086-b151-33def849eb8f
Varga, Gábor
184e7acb-e901-416c-863c-77ef2c37d0f9
Havancsák, Károly
2337b349-341a-45c0-b338-62fce045f9f6
Kawasaki, Megumi
944ba471-eb78-46db-bfb7-3f0296d9ef6d
Straumal, Boris B.
32d96dd4-70d8-4bcd-bf39-42dc4bd73c43
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Chinh, Nguyen Q., Valiev, Ruslan Z., Sauvage, Xavier, Varga, Gábor, Havancsák, Károly, Kawasaki, Megumi, Straumal, Boris B. and Langdon, Terence G.
(2014)
Grain boundary phenomena in an ultrafine-grained Al-Zn alloy with improved mechanical behavior for micro-devices.
Advanced Engineering Materials, 16 (8), .
(doi:10.1002/adem.201300450).
Abstract
The microstructural and mechanical properties of an ultrafine-grained (UFG) Al–Zn alloy processed by high-pressure torsion (HPT) are investigated using depth-sensing indentations, focused ion beam, scanning electron microscopy and scanning transmission electron microscopy. Emphasis is placed on the microstructure and the effects of grain boundaries at room temperature. The experiments show the formation of Zn-rich layers at the Al/Al grain boundaries that enhance the role of grain boundary sliding leading to unique plastic behavior in this UFG material. The occurrence of significant grain boundary sliding at room temperature is demonstrated by deforming micro-pillars. Our results illustrate a potential for using UFG materials as advanced functional materials in electronic micro-devices.
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e-pub ahead of print date: 27 January 2014
Published date: August 2014
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 372290
URI: http://eprints.soton.ac.uk/id/eprint/372290
ISSN: 1438-1656
PURE UUID: 038f76f1-b2cb-4118-ba51-d526ff2cc132
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Date deposited: 04 Dec 2014 16:56
Last modified: 15 Mar 2024 03:13
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Contributors
Author:
Nguyen Q. Chinh
Author:
Ruslan Z. Valiev
Author:
Xavier Sauvage
Author:
Gábor Varga
Author:
Károly Havancsák
Author:
Megumi Kawasaki
Author:
Boris B. Straumal
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