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Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling
The impact toughness of a TA31 titanium alloy cylindrical shell was investigated systemically after ring rolling. The impact toughness of specimens with different notch orientations shows obvious anisotropy. The microstructure of the cylindrical shell and the impact fracture were characterized by an...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7579025/ https://www.ncbi.nlm.nih.gov/pubmed/33003403 http://dx.doi.org/10.3390/ma13194332 |
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author | Jiang, Haiyang Zhang, Jianyang Xie, Bijun He, Zhangxun Zhang, Hao Wang, Bing Xu, Bin Wu, Yuxi Sun, Mingyue |
author_facet | Jiang, Haiyang Zhang, Jianyang Xie, Bijun He, Zhangxun Zhang, Hao Wang, Bing Xu, Bin Wu, Yuxi Sun, Mingyue |
author_sort | Jiang, Haiyang |
collection | PubMed |
description | The impact toughness of a TA31 titanium alloy cylindrical shell was investigated systemically after ring rolling. The impact toughness of specimens with different notch orientations shows obvious anisotropy. The microstructure of the cylindrical shell and the impact fracture were characterized by an optical microscope and scanning electron microscope. The results show that cracks are easier to propagate in the equiaxed α phase than the elongated α phase. This is because the expanding cracking path in the equiaxed α phase is shorter than that in the elongated α phase, and thereby the cracks are easier to propagate in the equiaxed α phase than the elongated α phase. More specifically, the α phase on the RD-TD plane was obviously isotropic, which makes it easy for the cracks to propagate along α grains in the same direction. However, the α phase on the RD-ND plane has a layered characteristic, and the direction of the α phase varies from layer to layer, thus it requires higher energy for cracks to propagate across this layered α phase. Therefore, the cracks propagating in the same α phase orientation take easier than that in the layered α phase, so it has lower impact toughness. |
format | Online Article Text |
id | pubmed-7579025 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75790252020-10-29 Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling Jiang, Haiyang Zhang, Jianyang Xie, Bijun He, Zhangxun Zhang, Hao Wang, Bing Xu, Bin Wu, Yuxi Sun, Mingyue Materials (Basel) Article The impact toughness of a TA31 titanium alloy cylindrical shell was investigated systemically after ring rolling. The impact toughness of specimens with different notch orientations shows obvious anisotropy. The microstructure of the cylindrical shell and the impact fracture were characterized by an optical microscope and scanning electron microscope. The results show that cracks are easier to propagate in the equiaxed α phase than the elongated α phase. This is because the expanding cracking path in the equiaxed α phase is shorter than that in the elongated α phase, and thereby the cracks are easier to propagate in the equiaxed α phase than the elongated α phase. More specifically, the α phase on the RD-TD plane was obviously isotropic, which makes it easy for the cracks to propagate along α grains in the same direction. However, the α phase on the RD-ND plane has a layered characteristic, and the direction of the α phase varies from layer to layer, thus it requires higher energy for cracks to propagate across this layered α phase. Therefore, the cracks propagating in the same α phase orientation take easier than that in the layered α phase, so it has lower impact toughness. MDPI 2020-09-29 /pmc/articles/PMC7579025/ /pubmed/33003403 http://dx.doi.org/10.3390/ma13194332 Text en © 2020 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 Jiang, Haiyang Zhang, Jianyang Xie, Bijun He, Zhangxun Zhang, Hao Wang, Bing Xu, Bin Wu, Yuxi Sun, Mingyue Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling |
title | Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling |
title_full | Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling |
title_fullStr | Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling |
title_full_unstemmed | Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling |
title_short | Impact Toughness Anisotropy of TA31 Titanium Alloy Cylindrical Shell after Ring Rolling |
title_sort | impact toughness anisotropy of ta31 titanium alloy cylindrical shell after ring rolling |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7579025/ https://www.ncbi.nlm.nih.gov/pubmed/33003403 http://dx.doi.org/10.3390/ma13194332 |
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