Published September 2019
| Version v1
Journal article
Composition of the nanosized orthorhombic O′ phase and its direct transformation to fine α during ageing in metastable β-Ti alloys
Creators
- 1. Institute for Materials & ZGH, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum (Germany)
- 2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, PR (China)
- 3. Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Düsseldorf (Germany)
- 4. ARC Research Hub for Advanced Manufacturing of Medical Devices, The University of Queensland, Brisbane, QLD 4072 (Australia)
- 5. Queensland Centre for Advanced Materials Processing and Manufacturing, School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, QLD 4072 (Australia)
- 6. School of Science and Engineering, University of the Sunshine Coast, Maroochydore DC, QLD 4558 (Australia)
Description
The structure and chemistry of the orthorhombic O′ phase after quenching of a Ti-23 at.%Nb-2 at.%O was measured using aberration-corrected transmission electron microscopy and atom probe tomography. The nanosized O′ phase, formed in the vicinity of ω, is enriched with oxygen and slightly depleted in Nb. Upon annealing, ω dissolves and the O′ phase develops in β up to 350 °C, above which temperature it transforms to colonies of fine α phase. Another needle-like form of α with lower Nb content is thought to nucleate from Nb-lean regions related to spinodal decomposition of β.
Additional details
Identifiers
- DOI
- 10.1016/j.scriptamat.2019.06.008;
- PII
- S1359646219303409;
Publishing Information
- Journal Title
- Scripta Materialia
- Journal Volume
- 170
- Journal Page Range
- p. 183-188
- ISSN
- 1359-6462
- CODEN
- SCMAF7
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 55043207
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- AGING; ALLOYS; NANOSTRUCTURES; ORTHORHOMBIC LATTICES; OXYGEN; TOMOGRAPHY; TRANSMISSION ELECTRON MICROSCOPY
- Descriptors DEC
- CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIAGNOSTIC TECHNIQUES; ELECTRON MICROSCOPY; ELEMENTS; MICROSCOPY; NONMETALS; THREE-DIMENSIONAL LATTICES
Optional Information
- Copyright
- Copyright (c) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.