Effects of hydrogen on the critical conditions for dynamic recrystallization of titanium alloy during hot deformation

Zhao, J; Ding, H; Jiang, Z; Wei, D; Linghu, K

Effects of hydrogen on the critical conditions for dynamic recrystallization of titanium alloy during hot deformation

Zhao, J Ding, H Jiang, Z Wei, D

Linghu, K

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Publication Type:: Journal Article
Citation:: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2014, 45 (11), pp. 4932 - 4945
Issue Date:: 2014-01-01

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Field	Value	Language
dc.contributor.author	Zhao, J	en_US
dc.contributor.author	Ding, H	en_US
dc.contributor.author	Jiang, Z	en_US
dc.contributor.author	Wei, D https://orcid.org/0000-0002-4247-8905	en_US
dc.contributor.author	Linghu, K	en_US
dc.date.issued	2014-01-01	en_US
dc.identifier.citation	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2014, 45 (11), pp. 4932 - 4945	en_US
dc.identifier.issn	1073-5623	en_US
dc.identifier.uri	http://hdl.handle.net/10453/35325
dc.description.abstract	Hot deformation tests were performed to study the flow behavior and microstructural evolution of a Ti600 titanium alloy with different hydrogen contents. The effects of hydrogen on the critical conditions for the initiation of dynamic recrystallization (DRX) were investigated. The DRX kinetics models of hydrogenated Ti600 alloy were developed, and the DRX volume fractions were quantified under different deformation conditions. The results indicate that the addition of proper hydrogen (no greater than 0.3 pct) benefits the decrease of both the critical stress and critical strain for the initiation of DRX. The critical stress and critical strain are dependent linearly on the peak stress and the strain to peak stress, respectively. The strain range from the initiation to the completion of DRX increases gradually with hydrogen in the hydrogen range of 0 to 0.3 pct, and a slightly decreased strain range is observed at the hydrogen content of 0.5 pct relative to that of 0.3 pct. The addition of large amounts of hydrogen (0.3 pct or greater) in Ti600 alloy induces incomplete DRX during hot deformation. © 2014 The Minerals, Metals & Materials Society and ASM International.	en_US
dc.relation.ispartof	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science	en_US
dc.relation.isbasedon	10.1007/s11661-014-2448-1	en_US
dc.subject.classification	Materials	en_US
dc.title	Effects of hydrogen on the critical conditions for dynamic recrystallization of titanium alloy during hot deformation	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	45	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	0913 Mechanical Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access
pubs.issue	11	en_US
pubs.publication-status	Published	en_US
pubs.volume	45	en_US

Abstract:

Hot deformation tests were performed to study the flow behavior and microstructural evolution of a Ti600 titanium alloy with different hydrogen contents. The effects of hydrogen on the critical conditions for the initiation of dynamic recrystallization (DRX) were investigated. The DRX kinetics models of hydrogenated Ti600 alloy were developed, and the DRX volume fractions were quantified under different deformation conditions. The results indicate that the addition of proper hydrogen (no greater than 0.3 pct) benefits the decrease of both the critical stress and critical strain for the initiation of DRX. The critical stress and critical strain are dependent linearly on the peak stress and the strain to peak stress, respectively. The strain range from the initiation to the completion of DRX increases gradually with hydrogen in the hydrogen range of 0 to 0.3 pct, and a slightly decreased strain range is observed at the hydrogen content of 0.5 pct relative to that of 0.3 pct. The addition of large amounts of hydrogen (0.3 pct or greater) in Ti600 alloy induces incomplete DRX during hot deformation. © 2014 The Minerals, Metals & Materials Society and ASM International.

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http://hdl.handle.net/10453/35325