Achieving superplasticity in a Bi-Sn alloy processed by high-pressure torsion
Achieving superplasticity in a Bi-Sn alloy processed by high-pressure torsion
A Bi-Sn alloy was processed by high-pressure torsion (HPT) at room temperature for 10 turns to achieve a homogeneous fine microstructure. Microhardness observations showed that the refined microstructure experienced self-annealing during storage at room temperature. Following HPT processing and storage at room temperature for 35 days, a sample had excellent superplastic properties when testing at an initial tensile strain rate of 1.0 × 10-4 s-1. The enhanced superplastic flow behavior of the fine-grained Bi-Sn alloy was attributed to the homogeneously distributed Bi-Sn and Sn-Sn boundaries after HPT processing since these are preferred sites for grain boundary sliding.
301-305
Wang, C.T.
09b0cb82-e411-4ec1-b2a5-3377b26fe37f
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
27 March 2015
Wang, C.T.
09b0cb82-e411-4ec1-b2a5-3377b26fe37f
Langdon, T.G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Wang, C.T. and Langdon, T.G.
(2015)
Achieving superplasticity in a Bi-Sn alloy processed by high-pressure torsion.
Letters on Materials, 5 (3), .
Abstract
A Bi-Sn alloy was processed by high-pressure torsion (HPT) at room temperature for 10 turns to achieve a homogeneous fine microstructure. Microhardness observations showed that the refined microstructure experienced self-annealing during storage at room temperature. Following HPT processing and storage at room temperature for 35 days, a sample had excellent superplastic properties when testing at an initial tensile strain rate of 1.0 × 10-4 s-1. The enhanced superplastic flow behavior of the fine-grained Bi-Sn alloy was attributed to the homogeneously distributed Bi-Sn and Sn-Sn boundaries after HPT processing since these are preferred sites for grain boundary sliding.
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Published date: 27 March 2015
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 382402
URI: http://eprints.soton.ac.uk/id/eprint/382402
ISSN: 2218-5046
PURE UUID: b9321f24-afe6-4c7a-9aef-d3b2cdac5bf0
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Date deposited: 27 Oct 2015 12:12
Last modified: 28 Apr 2022 01:50
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Author:
C.T. Wang
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