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Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature

Remarkable tensile ductility was first obtained in an in-situ Ti-based bulk metallic glass (BMG) composite at cryogenic temperature (77 K). The novel cryogenic tensile plasticity is related to the effective accommodation of ductile body-centered cubic dendrites at 77 K, characteristic of the prevail...

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Detalles Bibliográficos
Autores principales: Bai, J., Li, J. S., Qiao, J. W., Wang, J., Feng, R., Kou, H. C., Liaw, P. K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5006078/
https://www.ncbi.nlm.nih.gov/pubmed/27576728
http://dx.doi.org/10.1038/srep32287
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author Bai, J.
Li, J. S.
Qiao, J. W.
Wang, J.
Feng, R.
Kou, H. C.
Liaw, P. K.
author_facet Bai, J.
Li, J. S.
Qiao, J. W.
Wang, J.
Feng, R.
Kou, H. C.
Liaw, P. K.
author_sort Bai, J.
collection PubMed
description Remarkable tensile ductility was first obtained in an in-situ Ti-based bulk metallic glass (BMG) composite at cryogenic temperature (77 K). The novel cryogenic tensile plasticity is related to the effective accommodation of ductile body-centered cubic dendrites at 77 K, characteristic of the prevailing slip bands and dislocations, as well as lattice disorder, which can effectively hinder the propagation of critical shear bands. The greatly increased yield strength of dendrites contributes to the high yield strength of composite at 77 K. A trend of stronger softening is observed at low temperature, and a criterion is proposed to understand the softening behavior. The current research could also provide a guidance to the promising cryogenic application of these new advanced BMG composites.
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spelling pubmed-50060782016-09-07 Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature Bai, J. Li, J. S. Qiao, J. W. Wang, J. Feng, R. Kou, H. C. Liaw, P. K. Sci Rep Article Remarkable tensile ductility was first obtained in an in-situ Ti-based bulk metallic glass (BMG) composite at cryogenic temperature (77 K). The novel cryogenic tensile plasticity is related to the effective accommodation of ductile body-centered cubic dendrites at 77 K, characteristic of the prevailing slip bands and dislocations, as well as lattice disorder, which can effectively hinder the propagation of critical shear bands. The greatly increased yield strength of dendrites contributes to the high yield strength of composite at 77 K. A trend of stronger softening is observed at low temperature, and a criterion is proposed to understand the softening behavior. The current research could also provide a guidance to the promising cryogenic application of these new advanced BMG composites. Nature Publishing Group 2016-08-31 /pmc/articles/PMC5006078/ /pubmed/27576728 http://dx.doi.org/10.1038/srep32287 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
Bai, J.
Li, J. S.
Qiao, J. W.
Wang, J.
Feng, R.
Kou, H. C.
Liaw, P. K.
Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature
title Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature
title_full Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature
title_fullStr Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature
title_full_unstemmed Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature
title_short Tensile deformation mechanisms of an in-situ Ti-based metallic glass matrix composite at cryogenic temperature
title_sort tensile deformation mechanisms of an in-situ ti-based metallic glass matrix composite at cryogenic temperature
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5006078/
https://www.ncbi.nlm.nih.gov/pubmed/27576728
http://dx.doi.org/10.1038/srep32287
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