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Microstructural evolution and mechanical properties of ultrafine-grained Ti fabricated by cryorolling and subsequent annealing

Microstructural evolution and mechanical properties of ultrafine-grained Ti fabricated by cryorolling and subsequent annealing
Microstructural evolution and mechanical properties of ultrafine-grained Ti fabricated by cryorolling and subsequent annealing

Ultrafine-grained (UFG) commercial purity titanium (CP Ti) has a significant potential for use in medical implants and aerospace structural parts. Herein, UFG CP Ti sheets are processed by cryorolling and room-temperature rolling (RTR), respectively, followed by annealing for 1 h at temperatures from 250 to 350 °C. The grain size is reduced from ≈75 μm to ≈85 and ≈220 nm after cryorolling and RTR, respectively. The results show that the curves of tensile stress versus engineering failure strain for samples subjected to cryorolling and subsequent annealing are above those for samples subjected to RTR and subsequent annealing. In addition, the curves of ultimate tensile stress × fracture elongation versus grain size after cryorolling and annealing are above those for RTR and annealing. It is demonstrated that a combination of cryorolling and annealing leads to improved toughness compared with the processing by RTR and annealing.

annealing, cryorolling, mechanical properties, microstructures, titanium
1438-1656
Yu, H.
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Wang, Lin
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Yan, M.
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Gy, Hou
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Zhao, X.
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Kong, Charlie
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Pesin, Alexander
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Zhilyaev, Alexandr
d053e518-1976-4633-8953-e8f34b9b7c44
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Yu, H.
d9fd98cc-1fd4-4f02-b1b0-9c301920ef1d
Wang, Lin
82527212-6487-4bb9-85d2-5e186ac79df1
Yan, M.
9b2a64bc-bec5-4c32-83b7-01e89a589c73
Gy, Hou
bb056c61-67c1-4253-b461-5950c410fdba
Zhao, X.
5302193a-4db9-43f1-8a6f-e5efafb24349
Kong, Charlie
102a6ce4-914f-4aed-81bf-d8dd051b8cce
Pesin, Alexander
6c0d74a1-a6b3-466c-9040-246da56fe4c0
Zhilyaev, Alexandr
d053e518-1976-4633-8953-e8f34b9b7c44
Langdon, Terence G
86e69b4f-e16d-4830-bf8a-5a9c11f0de86

Yu, H., Wang, Lin, Yan, M., Gy, Hou, Zhao, X., Kong, Charlie, Pesin, Alexander, Zhilyaev, Alexandr and Langdon, Terence G (2020) Microstructural evolution and mechanical properties of ultrafine-grained Ti fabricated by cryorolling and subsequent annealing. Advanced Engineering Materials, 22 (10), [1901463]. (doi:10.1002/adem.201901463).

Record type: Article

Abstract

Ultrafine-grained (UFG) commercial purity titanium (CP Ti) has a significant potential for use in medical implants and aerospace structural parts. Herein, UFG CP Ti sheets are processed by cryorolling and room-temperature rolling (RTR), respectively, followed by annealing for 1 h at temperatures from 250 to 350 °C. The grain size is reduced from ≈75 μm to ≈85 and ≈220 nm after cryorolling and RTR, respectively. The results show that the curves of tensile stress versus engineering failure strain for samples subjected to cryorolling and subsequent annealing are above those for samples subjected to RTR and subsequent annealing. In addition, the curves of ultimate tensile stress × fracture elongation versus grain size after cryorolling and annealing are above those for RTR and annealing. It is demonstrated that a combination of cryorolling and annealing leads to improved toughness compared with the processing by RTR and annealing.

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Alex-AEM-Manuscript_nofigs_v2-TGL - Accepted Manuscript
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More information

Published date: 30 October 2020
Keywords: annealing, cryorolling, mechanical properties, microstructures, titanium

Identifiers

Local EPrints ID: 450097
URI: http://eprints.soton.ac.uk/id/eprint/450097
ISSN: 1438-1656
PURE UUID: 728657a8-ea91-4fe0-8267-9120021a97f6
ORCID for Terence G Langdon: ORCID iD orcid.org/0000-0003-3541-9250

Catalogue record

Date deposited: 09 Jul 2021 16:34
Last modified: 26 Nov 2021 06:58

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Contributors

Author: H. Yu
Author: Lin Wang
Author: M. Yan
Author: Hou Gy
Author: X. Zhao
Author: Charlie Kong
Author: Alexander Pesin
Author: Alexandr Zhilyaev

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