Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites

Novel Ti6Al4V alloy matrix composites with a controllable two-scale network architecture were successfully fabricated by reaction hot pressing (RHP). TiB whiskers (TiBw) were in-situ synthesized around the Ti6Al4V matrix particles, and formed the first-scale network structure (FSNS). Ti(5)Si(3) need...

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Autores principales: Jiao, Y., Huang, L. J., Duan, T. B., Wei, S. L., Kaveendran, B., Geng, L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020694/
https://www.ncbi.nlm.nih.gov/pubmed/27622992
http://dx.doi.org/10.1038/srep32991
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author Jiao, Y.
Huang, L. J.
Duan, T. B.
Wei, S. L.
Kaveendran, B.
Geng, L.
author_facet Jiao, Y.
Huang, L. J.
Duan, T. B.
Wei, S. L.
Kaveendran, B.
Geng, L.
author_sort Jiao, Y.
collection PubMed
description Novel Ti6Al4V alloy matrix composites with a controllable two-scale network architecture were successfully fabricated by reaction hot pressing (RHP). TiB whiskers (TiBw) were in-situ synthesized around the Ti6Al4V matrix particles, and formed the first-scale network structure (FSNS). Ti(5)Si(3) needles (Ti(5)Si(3)) precipitated in the β phase around the equiaxed α phase, and formed the secondary-scale network structure (SSNS). This resulted in increased deformation compatibility accompanied with enhanced mechanical properties. Apart from the reinforcement distribution and the volume fraction, the ratio between Ti(5)Si(3) and TiBw fraction were controlled. The prepared (Ti(5)Si(3) + TiBw)/Ti6Al4V composites showed higher tensile strength and ductility than the composites with a one-scale microstructure, and superior wear resistance over the Ti6Al4V alloy under dry sliding wear conditions at room temperature.
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spelling pubmed-50206942016-09-20 Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites Jiao, Y. Huang, L. J. Duan, T. B. Wei, S. L. Kaveendran, B. Geng, L. Sci Rep Article Novel Ti6Al4V alloy matrix composites with a controllable two-scale network architecture were successfully fabricated by reaction hot pressing (RHP). TiB whiskers (TiBw) were in-situ synthesized around the Ti6Al4V matrix particles, and formed the first-scale network structure (FSNS). Ti(5)Si(3) needles (Ti(5)Si(3)) precipitated in the β phase around the equiaxed α phase, and formed the secondary-scale network structure (SSNS). This resulted in increased deformation compatibility accompanied with enhanced mechanical properties. Apart from the reinforcement distribution and the volume fraction, the ratio between Ti(5)Si(3) and TiBw fraction were controlled. The prepared (Ti(5)Si(3) + TiBw)/Ti6Al4V composites showed higher tensile strength and ductility than the composites with a one-scale microstructure, and superior wear resistance over the Ti6Al4V alloy under dry sliding wear conditions at room temperature. Nature Publishing Group 2016-09-13 /pmc/articles/PMC5020694/ /pubmed/27622992 http://dx.doi.org/10.1038/srep32991 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Jiao, Y.
Huang, L. J.
Duan, T. B.
Wei, S. L.
Kaveendran, B.
Geng, L.
Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites
title Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites
title_full Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites
title_fullStr Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites
title_full_unstemmed Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites
title_short Controllable two-scale network architecture and enhanced mechanical properties of (Ti(5)Si(3)+TiBw)/Ti6Al4V composites
title_sort controllable two-scale network architecture and enhanced mechanical properties of (ti(5)si(3)+tibw)/ti6al4v composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5020694/
https://www.ncbi.nlm.nih.gov/pubmed/27622992
http://dx.doi.org/10.1038/srep32991
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