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Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer
Cu(50)Zr(45)Al(5) bulk metallic glass (BMG) presents high fracture strength. For improving its plasticity and controlling its mechanical properties, superficial dealloying of the BMG was performed. A composite structure containing an inner rod-shaped Cu-Zr-Al amorphous core with high strength and an...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5707569/ https://www.ncbi.nlm.nih.gov/pubmed/29077072 http://dx.doi.org/10.3390/nano7110352 |
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author | Wang, Chaoyang Li, Man Zhu, Mo Wang, Han Qin, Chunling Zhao, Weimin Wang, Zhifeng |
author_facet | Wang, Chaoyang Li, Man Zhu, Mo Wang, Han Qin, Chunling Zhao, Weimin Wang, Zhifeng |
author_sort | Wang, Chaoyang |
collection | PubMed |
description | Cu(50)Zr(45)Al(5) bulk metallic glass (BMG) presents high fracture strength. For improving its plasticity and controlling its mechanical properties, superficial dealloying of the BMG was performed. A composite structure containing an inner rod-shaped Cu-Zr-Al amorphous core with high strength and an outer dealloyed nanoporous layer with high energy absorption capacity was obtained. The microstructures and mechanical properties of the composites were studied in detail. It was found, for the first time, that the mechanical properties of Cu(50)Zr(45)Al(5) BMG can be controlled by adjusting the width of the buffer deformation zone in the dealloyed layer, which can be easily manipulated with different dealloying times. As a result, the compressive strength, compressive strain, and energy absorption capacity of the BMGs can be effectively modulated from 0.9 to 1.5 GPa, from 2.9% to 4.7%, and from 29.1 to 40.2 MJ/m(3), respectively. The paper may open a door for developing important engineering materials with regulable and comprehensive performances. |
format | Online Article Text |
id | pubmed-5707569 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-57075692017-12-05 Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer Wang, Chaoyang Li, Man Zhu, Mo Wang, Han Qin, Chunling Zhao, Weimin Wang, Zhifeng Nanomaterials (Basel) Article Cu(50)Zr(45)Al(5) bulk metallic glass (BMG) presents high fracture strength. For improving its plasticity and controlling its mechanical properties, superficial dealloying of the BMG was performed. A composite structure containing an inner rod-shaped Cu-Zr-Al amorphous core with high strength and an outer dealloyed nanoporous layer with high energy absorption capacity was obtained. The microstructures and mechanical properties of the composites were studied in detail. It was found, for the first time, that the mechanical properties of Cu(50)Zr(45)Al(5) BMG can be controlled by adjusting the width of the buffer deformation zone in the dealloyed layer, which can be easily manipulated with different dealloying times. As a result, the compressive strength, compressive strain, and energy absorption capacity of the BMGs can be effectively modulated from 0.9 to 1.5 GPa, from 2.9% to 4.7%, and from 29.1 to 40.2 MJ/m(3), respectively. The paper may open a door for developing important engineering materials with regulable and comprehensive performances. MDPI 2017-10-27 /pmc/articles/PMC5707569/ /pubmed/29077072 http://dx.doi.org/10.3390/nano7110352 Text en © 2017 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Chaoyang Li, Man Zhu, Mo Wang, Han Qin, Chunling Zhao, Weimin Wang, Zhifeng Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer |
title | Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer |
title_full | Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer |
title_fullStr | Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer |
title_full_unstemmed | Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer |
title_short | Controlling the Mechanical Properties of Bulk Metallic Glasses by Superficial Dealloyed Layer |
title_sort | controlling the mechanical properties of bulk metallic glasses by superficial dealloyed layer |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5707569/ https://www.ncbi.nlm.nih.gov/pubmed/29077072 http://dx.doi.org/10.3390/nano7110352 |
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