Critical revision of experimental data on simultaneous increase of strength and ductility in SPD pure metals
Critical revision of experimental data on simultaneous increase of strength and ductility in SPD pure metals
Already for fifteen years many researchers have been trying to discover metallic materials with unusual combinations of strength and ductility: with high strength and enhanced ductility. This report is an attempt to clarify the strength-ductility paradox by repetition of experimental work performed on HPT titanium of commercial purity. Experimental results for HPT bulk and powder titanium have demonstrated that there is nothing unexpected or unusual in mechanical behavior of CP titanium tested in HPT condition or after short annealing at 250 and 300 °C for 10 minutes. Moreover, high strength in HPT bulk titanium has a rational explanation due to the formation of hard omega phase during HPT processing at room temperature which transforms back to nanograined alpha phase domains during short annealing at elevated temperatures. HPT consolidation of titanium powder leads to creation of brittle specimens showing high strength but almost zero plasticity.
Zhilyaev, Alexandr P.
d053e518-1976-4633-8953-e8f34b9b7c44
Huang, Yi
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Cabrera, Jose Maria
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Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
2017
Zhilyaev, Alexandr P.
d053e518-1976-4633-8953-e8f34b9b7c44
Huang, Yi
9f4df815-51c1-4ee8-ad63-a92bf997103e
Cabrera, Jose Maria
f5c890d2-f395-4bb2-bcdf-2ad0c1b98717
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhilyaev, Alexandr P., Huang, Yi, Cabrera, Jose Maria and Langdon, Terence G.
(2017)
Critical revision of experimental data on simultaneous increase of strength and ductility in SPD pure metals.
In GSAM2017 Proceedings.
Kyushu University Press.
2 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Already for fifteen years many researchers have been trying to discover metallic materials with unusual combinations of strength and ductility: with high strength and enhanced ductility. This report is an attempt to clarify the strength-ductility paradox by repetition of experimental work performed on HPT titanium of commercial purity. Experimental results for HPT bulk and powder titanium have demonstrated that there is nothing unexpected or unusual in mechanical behavior of CP titanium tested in HPT condition or after short annealing at 250 and 300 °C for 10 minutes. Moreover, high strength in HPT bulk titanium has a rational explanation due to the formation of hard omega phase during HPT processing at room temperature which transforms back to nanograined alpha phase domains during short annealing at elevated temperatures. HPT consolidation of titanium powder leads to creation of brittle specimens showing high strength but almost zero plasticity.
Text
APZ-Fukuoka-Proceedings_Manuscript_APZ-TGL
- Accepted Manuscript
More information
Accepted/In Press date: 2 August 2017
Published date: 2017
Venue - Dates:
International Workshop on Giant Straining Process for Advanced Materials (GSAM2-17), Kyushu University, Fukuoka, Japan, 2017-09-02 - 2017-09-05
Identifiers
Local EPrints ID: 413203
URI: http://eprints.soton.ac.uk/id/eprint/413203
PURE UUID: 4ad7abf0-f792-4795-8a02-c0f72c4a4c9b
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Date deposited: 17 Aug 2017 16:30
Last modified: 16 Mar 2024 04:08
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Contributors
Author:
Alexandr P. Zhilyaev
Author:
Yi Huang
Author:
Jose Maria Cabrera
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