Cargando…
Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures
Lightweight multiprincipal element alloys (MPEAs) are promising candidates for potential application as engineering materials due to their high strength and low density. In this work, lightweight Ti(70)Al(15)V(15) and Ti(80)Al(10)V(10) MPEAs were fabricated via vacuum arc melting. The phases of the...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9778487/ https://www.ncbi.nlm.nih.gov/pubmed/36554182 http://dx.doi.org/10.3390/e24121777 |
_version_ | 1784856373647900672 |
---|---|
author | Lin, Gongxi Guo, Ruipeng Shi, Xiaohui Han, Lina Qiao, Junwei |
author_facet | Lin, Gongxi Guo, Ruipeng Shi, Xiaohui Han, Lina Qiao, Junwei |
author_sort | Lin, Gongxi |
collection | PubMed |
description | Lightweight multiprincipal element alloys (MPEAs) are promising candidates for potential application as engineering materials due to their high strength and low density. In this work, lightweight Ti(70)Al(15)V(15) and Ti(80)Al(10)V(10) MPEAs were fabricated via vacuum arc melting. The phases of the Ti(70)Al(15)V(15) alloys consisted of a BCC phase and a small amount of B2 phase while the Ti(80)Al(10)V(10) alloys displayed a dual-phase structure with BCC and HCP phases. The different phase compositions led to differences in their mechanical properties. When the temperature changed from 298 K to 77 K, the strength of the alloys further increased and maintained a certain plasticity. This is attributed to the increasing lattice friction stress at cryogenic temperature. TEM observation demonstrated that dislocation played a crucial role in plastic deformation for both the Ti(70)Al(15)V(15) and Ti(80)Al(10)V(10) alloys. In addition, Ti(80)Al(10)V(10) exhibited significant work-hardening capabilities. By analyzing the strengthening mechanism of the alloys, the theoretical yield strength was calculated, and the results agreed with the experimental values. The present results provide new insight into developing lightweight MPEAs containing Ti and Al. |
format | Online Article Text |
id | pubmed-9778487 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-97784872022-12-23 Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures Lin, Gongxi Guo, Ruipeng Shi, Xiaohui Han, Lina Qiao, Junwei Entropy (Basel) Article Lightweight multiprincipal element alloys (MPEAs) are promising candidates for potential application as engineering materials due to their high strength and low density. In this work, lightweight Ti(70)Al(15)V(15) and Ti(80)Al(10)V(10) MPEAs were fabricated via vacuum arc melting. The phases of the Ti(70)Al(15)V(15) alloys consisted of a BCC phase and a small amount of B2 phase while the Ti(80)Al(10)V(10) alloys displayed a dual-phase structure with BCC and HCP phases. The different phase compositions led to differences in their mechanical properties. When the temperature changed from 298 K to 77 K, the strength of the alloys further increased and maintained a certain plasticity. This is attributed to the increasing lattice friction stress at cryogenic temperature. TEM observation demonstrated that dislocation played a crucial role in plastic deformation for both the Ti(70)Al(15)V(15) and Ti(80)Al(10)V(10) alloys. In addition, Ti(80)Al(10)V(10) exhibited significant work-hardening capabilities. By analyzing the strengthening mechanism of the alloys, the theoretical yield strength was calculated, and the results agreed with the experimental values. The present results provide new insight into developing lightweight MPEAs containing Ti and Al. MDPI 2022-12-05 /pmc/articles/PMC9778487/ /pubmed/36554182 http://dx.doi.org/10.3390/e24121777 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lin, Gongxi Guo, Ruipeng Shi, Xiaohui Han, Lina Qiao, Junwei Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures |
title | Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures |
title_full | Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures |
title_fullStr | Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures |
title_full_unstemmed | Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures |
title_short | Lightweight Multiprincipal Element Alloys with Excellent Mechanical Properties at Room and Cryogenic Temperatures |
title_sort | lightweight multiprincipal element alloys with excellent mechanical properties at room and cryogenic temperatures |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9778487/ https://www.ncbi.nlm.nih.gov/pubmed/36554182 http://dx.doi.org/10.3390/e24121777 |
work_keys_str_mv | AT lingongxi lightweightmultiprincipalelementalloyswithexcellentmechanicalpropertiesatroomandcryogenictemperatures AT guoruipeng lightweightmultiprincipalelementalloyswithexcellentmechanicalpropertiesatroomandcryogenictemperatures AT shixiaohui lightweightmultiprincipalelementalloyswithexcellentmechanicalpropertiesatroomandcryogenictemperatures AT hanlina lightweightmultiprincipalelementalloyswithexcellentmechanicalpropertiesatroomandcryogenictemperatures AT qiaojunwei lightweightmultiprincipalelementalloyswithexcellentmechanicalpropertiesatroomandcryogenictemperatures |