Hardness homogeneity and micro-tensile behavior in a magnesium AZ31 alloy processed by equal-channel angular pressing
Hardness homogeneity and micro-tensile behavior in a magnesium AZ31 alloy processed by equal-channel angular pressing
A magnesium AZ31 alloy was processed by equal-channel angular pressing (ECAP) at a temperature of 473 K using a die with a channel angle of 110°. The results show that an ultrafine-grained (UFG) microstructure is achieved with good hardness homogeneity after processing through 4 or more passes of ECAP. After 8 passes of ECAP, a grain size of ~1.0 ?m was achieved. Measurements show that the average value of the microhardness increases with increasing numbers of ECAP passes. The mechanical properties were evaluated using micro-tensile testing with specimens cut perpendicular to the longitudinal axes of the ECAP billets. These tests were conducted at room temperature and at 423 and 473 K and the results demonstrate a potential for using the UFG AZ31 alloy for applications in micro-forming technology.
equal-channel angular pressing, hardness, homogeneity, magnesium alloy, micro-tensile testing
108-114
Xu, Jie
593871b5-a17a-4e0f-ae0e-7e48b1aadd99
Shirooyeh, Mahmood
777d37e5-09d0-4c80-8e9d-28e8d24006d1
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Shan, Debin
fd8652eb-1eeb-4ae2-bcc4-102320f3c2d7
Guo, Bin
6454155d-fa5f-480b-8747-88d06498a923
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
1 December 2013
Xu, Jie
593871b5-a17a-4e0f-ae0e-7e48b1aadd99
Shirooyeh, Mahmood
777d37e5-09d0-4c80-8e9d-28e8d24006d1
Wongsa-Ngam, Jittraporn
3a196159-d8e5-4658-a47b-a6f6c5a7dcc7
Shan, Debin
fd8652eb-1eeb-4ae2-bcc4-102320f3c2d7
Guo, Bin
6454155d-fa5f-480b-8747-88d06498a923
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Xu, Jie, Shirooyeh, Mahmood, Wongsa-Ngam, Jittraporn, Shan, Debin, Guo, Bin and Langdon, Terence G.
(2013)
Hardness homogeneity and micro-tensile behavior in a magnesium AZ31 alloy processed by equal-channel angular pressing.
Materials Science and Engineering: A, 586, .
(doi:10.1016/j.msea.2013.07.096).
Abstract
A magnesium AZ31 alloy was processed by equal-channel angular pressing (ECAP) at a temperature of 473 K using a die with a channel angle of 110°. The results show that an ultrafine-grained (UFG) microstructure is achieved with good hardness homogeneity after processing through 4 or more passes of ECAP. After 8 passes of ECAP, a grain size of ~1.0 ?m was achieved. Measurements show that the average value of the microhardness increases with increasing numbers of ECAP passes. The mechanical properties were evaluated using micro-tensile testing with specimens cut perpendicular to the longitudinal axes of the ECAP billets. These tests were conducted at room temperature and at 423 and 473 K and the results demonstrate a potential for using the UFG AZ31 alloy for applications in micro-forming technology.
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e-pub ahead of print date: 16 August 2013
Published date: 1 December 2013
Keywords:
equal-channel angular pressing, hardness, homogeneity, magnesium alloy, micro-tensile testing
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 359496
URI: http://eprints.soton.ac.uk/id/eprint/359496
ISSN: 0921-5093
PURE UUID: 73d32807-7c9e-4f47-91fc-6438f1eba3a9
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Date deposited: 05 Nov 2013 11:09
Last modified: 15 Mar 2024 03:13
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Author:
Jie Xu
Author:
Mahmood Shirooyeh
Author:
Jittraporn Wongsa-Ngam
Author:
Debin Shan
Author:
Bin Guo
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