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Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region

Crystallographic relationships between α- and β-phases resulting from phase transformations, which took place during the continuous water quenching (WQ), air cooling (AC) and furnace cooling (FC) of a Ti6Al4V plates solution treated at 1065 °C, were investigated by methods of electron backscatter di...

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Autores principales: Naschetnikova, Inna A., Stepanov, Stepan I., Redikultsev, Andrey A., Yarkov, Valentin Yu., Zorina, Maria A., Lobanov, Mikhail L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9456582/
https://www.ncbi.nlm.nih.gov/pubmed/36079221
http://dx.doi.org/10.3390/ma15175840
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author Naschetnikova, Inna A.
Stepanov, Stepan I.
Redikultsev, Andrey A.
Yarkov, Valentin Yu.
Zorina, Maria A.
Lobanov, Mikhail L.
author_facet Naschetnikova, Inna A.
Stepanov, Stepan I.
Redikultsev, Andrey A.
Yarkov, Valentin Yu.
Zorina, Maria A.
Lobanov, Mikhail L.
author_sort Naschetnikova, Inna A.
collection PubMed
description Crystallographic relationships between α- and β-phases resulting from phase transformations, which took place during the continuous water quenching (WQ), air cooling (AC) and furnace cooling (FC) of a Ti6Al4V plates solution treated at 1065 °C, were investigated by methods of electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). WQ, AC and FC resulted in typical martensite, basket-weave and parallel-plate Widmanstatten structures, respectively. The experimental distribution of α/β-misorientations deviated from BOR at set discrete angles close to 22, 30, 35 and 43°. The experimental spectra of angles were confirmed by theoretical calculations of the possible misorientations between the α and β phases through the β(o)→α→β(II) –transformation path based on Burgers orientation relationship (BOR). Joint analysis of the experimental data and theoretical calculations revealed that the secondary β(II)-phase was precipitated according to the sequence β(o)→α→β(II) during continuous cooling from the single-phase β-region. Similar spectra for α/β-phase misorientations for all investigated cooling rates acknowledged the similar transformation mechanisms and dominant shear component of the phase transformations.
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spelling pubmed-94565822022-09-09 Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region Naschetnikova, Inna A. Stepanov, Stepan I. Redikultsev, Andrey A. Yarkov, Valentin Yu. Zorina, Maria A. Lobanov, Mikhail L. Materials (Basel) Article Crystallographic relationships between α- and β-phases resulting from phase transformations, which took place during the continuous water quenching (WQ), air cooling (AC) and furnace cooling (FC) of a Ti6Al4V plates solution treated at 1065 °C, were investigated by methods of electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM). WQ, AC and FC resulted in typical martensite, basket-weave and parallel-plate Widmanstatten structures, respectively. The experimental distribution of α/β-misorientations deviated from BOR at set discrete angles close to 22, 30, 35 and 43°. The experimental spectra of angles were confirmed by theoretical calculations of the possible misorientations between the α and β phases through the β(o)→α→β(II) –transformation path based on Burgers orientation relationship (BOR). Joint analysis of the experimental data and theoretical calculations revealed that the secondary β(II)-phase was precipitated according to the sequence β(o)→α→β(II) during continuous cooling from the single-phase β-region. Similar spectra for α/β-phase misorientations for all investigated cooling rates acknowledged the similar transformation mechanisms and dominant shear component of the phase transformations. MDPI 2022-08-24 /pmc/articles/PMC9456582/ /pubmed/36079221 http://dx.doi.org/10.3390/ma15175840 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Naschetnikova, Inna A.
Stepanov, Stepan I.
Redikultsev, Andrey A.
Yarkov, Valentin Yu.
Zorina, Maria A.
Lobanov, Mikhail L.
Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region
title Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region
title_full Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region
title_fullStr Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region
title_full_unstemmed Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region
title_short Crystallographic Features of Phase Transformations during the Continuous Cooling of a Ti6Al4V Alloy from the Single-Phase β-Region
title_sort crystallographic features of phase transformations during the continuous cooling of a ti6al4v alloy from the single-phase β-region
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9456582/
https://www.ncbi.nlm.nih.gov/pubmed/36079221
http://dx.doi.org/10.3390/ma15175840
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