Microstructural evolution and tensile testing of a Bi-Sn (57/43) alloy processed by tube high-pressure shearing
Microstructural evolution and tensile testing of a Bi-Sn (57/43) alloy processed by tube high-pressure shearing
Tube high-pressure shearing (t-HPS) processing was performed on a eutectic Bi–Sn (57/43) alloy for 0.25, 1, 5 and 20 turns. The selected samples were stored at room temperature for up to 56 days to examine the strain weakening and self-annealing behavior of the alloy. The results showed that t-HPS processing gradually refined the microstructure and led to decreasing of microhardness, but microhardness increased slowly during the subsequent storage at room temperature. Shear localization of the eutectic structure during t-HPS processing was observed as large amounts of narrow dense lamellar zones were visible in the deformed microstructures. The Bi–Sn (57/43) alloy processed by t-HPS exhibited significantly enhanced superplastic properties with elongations up to >1800% in a sample after t-HPS processing for 20 turns. This high elongation is attributed to the breaking of the lamellar structure and the very small grain size.
Bi-Sn alloy, microhardness, self-annealing, superplasticity, tube high-pressure shearing
Wang, Chuan Ting
80ad9adf-a9df-49ed-934d-fa64505b920d
Li, Zheng
f520b115-b06a-47c7-8e81-cd123d8f28ae
He, Yong
479033f6-82b3-4004-88bd-a105203a1c0b
Wang, Jing Tao
10285b03-ac4f-46d7-b8c9-7a4c0dad72d1
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
12 October 2021
Wang, Chuan Ting
80ad9adf-a9df-49ed-934d-fa64505b920d
Li, Zheng
f520b115-b06a-47c7-8e81-cd123d8f28ae
He, Yong
479033f6-82b3-4004-88bd-a105203a1c0b
Wang, Jing Tao
10285b03-ac4f-46d7-b8c9-7a4c0dad72d1
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Wang, Chuan Ting, Li, Zheng, He, Yong, Wang, Jing Tao and Langdon, Terence G
(2021)
Microstructural evolution and tensile testing of a Bi-Sn (57/43) alloy processed by tube high-pressure shearing.
Crystals, 11 (10), [1229].
(doi:10.3390/cryst11101229).
Abstract
Tube high-pressure shearing (t-HPS) processing was performed on a eutectic Bi–Sn (57/43) alloy for 0.25, 1, 5 and 20 turns. The selected samples were stored at room temperature for up to 56 days to examine the strain weakening and self-annealing behavior of the alloy. The results showed that t-HPS processing gradually refined the microstructure and led to decreasing of microhardness, but microhardness increased slowly during the subsequent storage at room temperature. Shear localization of the eutectic structure during t-HPS processing was observed as large amounts of narrow dense lamellar zones were visible in the deformed microstructures. The Bi–Sn (57/43) alloy processed by t-HPS exhibited significantly enhanced superplastic properties with elongations up to >1800% in a sample after t-HPS processing for 20 turns. This high elongation is attributed to the breaking of the lamellar structure and the very small grain size.
Text
CTWang-Crystals-2021107-final
- Accepted Manuscript
More information
Accepted/In Press date: 9 October 2021
Published date: 12 October 2021
Additional Information:
Funding Information:
Funding: This work was supported by the National Science Foundation of the United States (grant No. DMR-1160966), the European Research Council (ERC Grant Agreement No. 267464-SPDMETALS) and the Natural Science Foundation of China (grant No. 52074160).
Funding Information:
This work was supported by the National Science Foundation of the United States (grant No. DMR-1160966), the European Research Council (ERC Grant Agreement No. 267464-SPDMETALS) and the Natural Science Foundation of China (grant No. 52074160). t-HPS processing. The authors thank L.Y. Li and Y. Yang of NJUST for assistance with.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Keywords:
Bi-Sn alloy, microhardness, self-annealing, superplasticity, tube high-pressure shearing
Identifiers
Local EPrints ID: 451961
URI: http://eprints.soton.ac.uk/id/eprint/451961
ISSN: 2073-4352
PURE UUID: 66a30b79-e99c-4c2a-abd1-653b8ab7021a
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Date deposited: 04 Nov 2021 17:34
Last modified: 17 Mar 2024 02:55
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Author:
Chuan Ting Wang
Author:
Zheng Li
Author:
Yong He
Author:
Jing Tao Wang
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