University of Oulu

Saeed Sadeghpour, Vahid Javaheri, Seyed Mahdi Abbasi, Jukka Kömi, The effect of phase stability on the grain growth behavior of beta titanium alloys, Physica B: Condensed Matter, Volume 593, 2020, 412315, ISSN 0921-4526, https://doi.org/10.1016/j.physb.2020.412315

The effect of phase stability on the grain growth behavior of beta titanium alloys

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Author: Sadeghpour, Saeed1; Javaheri, Vahid1; Abbasi, Seyed Mahdi2;
Organizations: 1Centre for Advanced Steels Research, University of Oulu, 90014, Oulu, Finland
2Metallic Materials Research Center, Malek Ashtar University of Technology, Tehran, Iran
Format: article
Version: accepted version
Access: embargoed
Persistent link: http://urn.fi/urn:nbn:fi-fe2020063046384
Language: English
Published: Elsevier, 2020
Publish Date: 2022-06-12
Description:

Abstract

The grain growth kinetics of two beta titanium alloys, Ti–4733 and Ti–5553 was studied over a temperature range of 850 °C–1000 °C. The more stable alloy i.e. Ti–4733, showed a smaller average grain size and slower growth rate compared to Ti–5553 at a same annealing condition. The results showed that the uniformity of grain size decreased initially dawn to a minimum and then increased with increasing temperature. The grain growth exponent (n) and activation energy (Q) were calculated and it was revealed that n is mainly affected by temperature and Q is generally influenced by time. The n value for Ti–4733 was found to be lower than that for Ti–5553 while a higher Q was calculated for Ti–4733. The lower n values and the higher Q were attributed to the solute drag effect and the high Mo content with low diffusivity in Ti matrix.

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Series: Physica. B, Condensed matter
ISSN: 0921-4526
ISSN-E: 0921-4526
ISSN-L: 0921-4526
Volume: 593
Article number: 412315
DOI: 10.1016/j.physb.2020.412315
OADOI: https://oadoi.org/10.1016/j.physb.2020.412315
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Subjects:
Funding: The authors are grateful for financial support from Academy of Finland (#311934 - Genome of Steel Project). Vahid Javaheri would also like to thank the Jenny and Antti Wihuri Foundation for awarding a personal grant.
Copyright information: © 2020 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
  https://creativecommons.org/licenses/by-nc-nd/4.0/