Nucleation driving force for ω-assisted formation of α and associated ω morphology in β-Ti alloys

Tong Li; Damon Kent; Gang Sha; Hongwei Liu; Suzana G Fries; Anna V Ceguerra; Matthew S Dargusch; Julie M Cairney

doi:10.1016/j.scriptamat.2018.06.039

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Nucleation driving force for ω-assisted formation of α and associated ω morphology in β-Ti alloys

Journal article

Peer reviewed

Nucleation driving force for ω-assisted formation of α and associated ω morphology in β-Ti alloys

Tong Li, Damon Kent, Gang Sha, Hongwei Liu, Suzana G Fries, Anna V Ceguerra, Matthew S Dargusch and Julie M Cairney

Scripta Materialia, Vol.155, pp.149-154

2018

DOI: https://doi.org/10.1016/j.scriptamat.2018.06.039

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Abstract

word

yitanium alloy

phase transformations

atom probe tomography

HREM

The structural and chemical changes at ω/β interfaces and the evolution of the morphology of ω in a near-β alloy during isothermal ageing at 573 K were investigated by atom probe tomography and aberration-corrected high-resolution transmission electron microscopy. Ledges and local O enrichment at semi-coherent isothermal ω interfaces are proposed to provide the key driving force for nucleation of ω-assisted α. Following nucleation of α, the morphology of ω evolves from ellipsoidal to rod-like, induced by rapid consumption of ω by α.

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Title: Nucleation driving force for ω-assisted formation of α and associated ω morphology in β-Ti alloys
Authors: Tong Li (Author)
Damon Kent (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Gang Sha (Author) - Nanjing University of Science and Technology, China
Hongwei Liu (Author) - University of Sydney
Suzana G Fries (Author) - Ruhr-Universität Bochum, Germany
Anna V Ceguerra (Author) - University of Sydney
Matthew S Dargusch (Author) - The University of Queensland
Julie M Cairney (Author) - University of Sydney
Publication details: Scripta Materialia, Vol.155, pp.149-154
Publisher: Pergamon
Date published: 2018
DOI: 10.1016/j.scriptamat.2018.06.039
ISSN: 1359-6462; 1359-6462
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99451487002621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Nanoscience & Nanotechnology