Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite

The tensile creep behavior of Al-Cu-Mg alloy and its composite containing in situ nano-sized TiC(x) were explored at temperatures of 493 K, 533 K and 573 K with the applied stresses in the range of 40 to 100 MPa. The composite reinforced by nano-sized TiC(x) particles exhibited excellent creep resis...

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Detalles Bibliográficos
Autores principales: Wang, Lei, Qiu, Feng, Zhao, Qinglong, Zha, Min, Jiang, Qichuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5495815/
https://www.ncbi.nlm.nih.gov/pubmed/28674452
http://dx.doi.org/10.1038/s41598-017-04816-0
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author Wang, Lei
Qiu, Feng
Zhao, Qinglong
Zha, Min
Jiang, Qichuan
author_facet Wang, Lei
Qiu, Feng
Zhao, Qinglong
Zha, Min
Jiang, Qichuan
author_sort Wang, Lei
collection PubMed
description The tensile creep behavior of Al-Cu-Mg alloy and its composite containing in situ nano-sized TiC(x) were explored at temperatures of 493 K, 533 K and 573 K with the applied stresses in the range of 40 to 100 MPa. The composite reinforced by nano-sized TiC(x) particles exhibited excellent creep resistance ability, which was about 4–15 times higher than those of the unreinforced matrix alloy. The stress exponent of 5 was noticed for both Al-Cu-Mg alloy and its composite, which suggested that their creep behavior was related to dislocation climb mechanism. During deformation at elevated temperatures, the enhanced creep resistance of the composite was mainly attributed to two aspects: (a) Orowan strengthening and grain boundary (GB) strengthening induced by nano-sized TiC(x) particles, (b) θ′ and S′ precipitates strengthening.
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spelling pubmed-54958152017-07-07 Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite Wang, Lei Qiu, Feng Zhao, Qinglong Zha, Min Jiang, Qichuan Sci Rep Article The tensile creep behavior of Al-Cu-Mg alloy and its composite containing in situ nano-sized TiC(x) were explored at temperatures of 493 K, 533 K and 573 K with the applied stresses in the range of 40 to 100 MPa. The composite reinforced by nano-sized TiC(x) particles exhibited excellent creep resistance ability, which was about 4–15 times higher than those of the unreinforced matrix alloy. The stress exponent of 5 was noticed for both Al-Cu-Mg alloy and its composite, which suggested that their creep behavior was related to dislocation climb mechanism. During deformation at elevated temperatures, the enhanced creep resistance of the composite was mainly attributed to two aspects: (a) Orowan strengthening and grain boundary (GB) strengthening induced by nano-sized TiC(x) particles, (b) θ′ and S′ precipitates strengthening. Nature Publishing Group UK 2017-07-03 /pmc/articles/PMC5495815/ /pubmed/28674452 http://dx.doi.org/10.1038/s41598-017-04816-0 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Wang, Lei
Qiu, Feng
Zhao, Qinglong
Zha, Min
Jiang, Qichuan
Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite
title Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite
title_full Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite
title_fullStr Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite
title_full_unstemmed Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite
title_short Superior high creep resistance of in situ nano-sized TiC(x)/Al-Cu-Mg composite
title_sort superior high creep resistance of in situ nano-sized tic(x)/al-cu-mg composite
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5495815/
https://www.ncbi.nlm.nih.gov/pubmed/28674452
http://dx.doi.org/10.1038/s41598-017-04816-0
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