Thermal stability and mechanical properties of HPT-processed CP-Ti
Thermal stability and mechanical properties of HPT-processed CP-Ti
A grade 2 commercial pure titanium was processed by high-pressure torsion (HPT) at room temperature to 20 turns. X-ray analysis showed that an ω phase formed during HPT processing but disappeared immediately during 10 minutes post-HPT short-term annealing even at a very low temperature of 473 K. The thermal stability of HPT-processed microstructural evolution was studied by electron backscatter diffraction (EBSD). After short-term annealing at lower temperatures (473 and 673 K), the disc centre had relative higher hardness value than the edge area, and it was found that the centre retained the feature of deformed microstructure whereas the edge showed recovery / recrystallization of the microstructure. Short-term annealing at higher temperatures (873 and 973 K) led to almost uniformly distributed hardness and microstructures in the disc centre and edge areas. Grain structures and hardness measurements indicate complete recrystallization occurred at 873 K.
1-6
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Mortier, Sarah
6b7b11f8-16d7-4488-b499-cc82d6371194
Pereira, Pedro Henrique Rodrigue
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Bazarnik, Piotr
d6764d8b-39bb-43eb-a3b1-09043b4575df
Lewandowska, Malgorzata
6625f678-258e-4ccb-a4fd-8385d56223d8
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
8 May 2017
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Mortier, Sarah
6b7b11f8-16d7-4488-b499-cc82d6371194
Pereira, Pedro Henrique Rodrigue
9ee129fd-0e06-482d-990c-971aaf83b1d0
Bazarnik, Piotr
d6764d8b-39bb-43eb-a3b1-09043b4575df
Lewandowska, Malgorzata
6625f678-258e-4ccb-a4fd-8385d56223d8
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Huang, Yi, Mortier, Sarah, Pereira, Pedro Henrique Rodrigue, Bazarnik, Piotr, Lewandowska, Malgorzata and Langdon, Terence G.
(2017)
Thermal stability and mechanical properties of HPT-processed CP-Ti.
IOP Conference Series: Materials Science and Engineering, 194 (conference 1), , [012012].
(doi:10.1088/1757-899X/194/1/012012).
Abstract
A grade 2 commercial pure titanium was processed by high-pressure torsion (HPT) at room temperature to 20 turns. X-ray analysis showed that an ω phase formed during HPT processing but disappeared immediately during 10 minutes post-HPT short-term annealing even at a very low temperature of 473 K. The thermal stability of HPT-processed microstructural evolution was studied by electron backscatter diffraction (EBSD). After short-term annealing at lower temperatures (473 and 673 K), the disc centre had relative higher hardness value than the edge area, and it was found that the centre retained the feature of deformed microstructure whereas the edge showed recovery / recrystallization of the microstructure. Short-term annealing at higher temperatures (873 and 973 K) led to almost uniformly distributed hardness and microstructures in the disc centre and edge areas. Grain structures and hardness measurements indicate complete recrystallization occurred at 873 K.
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YH-NanoSPD7 paper-TGL
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Huang_2017_IOP_Conf._Ser.__Mater._Sci._Eng._194_012012
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Accepted/In Press date: 12 April 2017
e-pub ahead of print date: 8 May 2017
Published date: 8 May 2017
Organisations:
Engineering Mats & Surface Engineerg Gp, Education Hub
Identifiers
Local EPrints ID: 407856
URI: http://eprints.soton.ac.uk/id/eprint/407856
ISSN: 1757-899X
PURE UUID: dbd2ec0f-3caa-4663-a279-5966010c6a90
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Date deposited: 27 Apr 2017 01:07
Last modified: 16 Mar 2024 05:15
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Author:
Yi Huang
Author:
Sarah Mortier
Author:
Pedro Henrique Rodrigue Pereira
Author:
Piotr Bazarnik
Author:
Malgorzata Lewandowska
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