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Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal
TiB crystal whiskers (TiB(w)) can be synthesized in situ in Ti alloy matrix through powder metallurgy for the preparation of a new type of ceramic fiber-reinforced Ti matrix composite (TMC) TiB(w)/Ti-6Al-4V. In the TiB(w)/Ti-6Al-4V TMC, the reinforced phase/matrix interface is clean and has superior...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7918256/ https://www.ncbi.nlm.nih.gov/pubmed/33673257 http://dx.doi.org/10.3390/ma14040875 |
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author | Tian, Hao He, Jianchao Hou, Jinbao Lv, Yanlong |
author_facet | Tian, Hao He, Jianchao Hou, Jinbao Lv, Yanlong |
author_sort | Tian, Hao |
collection | PubMed |
description | TiB crystal whiskers (TiB(w)) can be synthesized in situ in Ti alloy matrix through powder metallurgy for the preparation of a new type of ceramic fiber-reinforced Ti matrix composite (TMC) TiB(w)/Ti-6Al-4V. In the TiB(w)/Ti-6Al-4V TMC, the reinforced phase/matrix interface is clean and has superior comprehensive mechanical properties, but its machinability is degraded. Hence, the bonding of reliable materials is important. To further optimize the TiB(w)/Ti-6Al-4V brazing technology and determine the relationship between the microstructure and tensile property of the brazed joint, results demonstrate that the elements of brazing filler metal are under sufficient and uniform diffusion, the microstructure is the typical Widmanstätten structure, and fine granular compounds in β phase are observed. The average tensile strength of the brazing specimen is 998 MPa under room temperature, which is 97.3% of that of the base metal. During the high-temperature (400 °C) tensile process, a fracture occurred at the base metal of the highest tensile test specimen with strength reaching 689 MPa, and the tensile fracture involved a combination of intergranular and transgranular modes at both room temperature and 400 °C. The fracture surface has dimples, secondary cracks are generated by the fracture of TiB whiskers, and large holes form when whole TiB whiskers are removed. The proposed algorithm provides evidence for promoting the application of TiB(w)/Ti-6Al-4V TMCs in practical production. |
format | Online Article Text |
id | pubmed-7918256 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-79182562021-03-02 Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal Tian, Hao He, Jianchao Hou, Jinbao Lv, Yanlong Materials (Basel) Article TiB crystal whiskers (TiB(w)) can be synthesized in situ in Ti alloy matrix through powder metallurgy for the preparation of a new type of ceramic fiber-reinforced Ti matrix composite (TMC) TiB(w)/Ti-6Al-4V. In the TiB(w)/Ti-6Al-4V TMC, the reinforced phase/matrix interface is clean and has superior comprehensive mechanical properties, but its machinability is degraded. Hence, the bonding of reliable materials is important. To further optimize the TiB(w)/Ti-6Al-4V brazing technology and determine the relationship between the microstructure and tensile property of the brazed joint, results demonstrate that the elements of brazing filler metal are under sufficient and uniform diffusion, the microstructure is the typical Widmanstätten structure, and fine granular compounds in β phase are observed. The average tensile strength of the brazing specimen is 998 MPa under room temperature, which is 97.3% of that of the base metal. During the high-temperature (400 °C) tensile process, a fracture occurred at the base metal of the highest tensile test specimen with strength reaching 689 MPa, and the tensile fracture involved a combination of intergranular and transgranular modes at both room temperature and 400 °C. The fracture surface has dimples, secondary cracks are generated by the fracture of TiB whiskers, and large holes form when whole TiB whiskers are removed. The proposed algorithm provides evidence for promoting the application of TiB(w)/Ti-6Al-4V TMCs in practical production. MDPI 2021-02-12 /pmc/articles/PMC7918256/ /pubmed/33673257 http://dx.doi.org/10.3390/ma14040875 Text en © 2021 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 Tian, Hao He, Jianchao Hou, Jinbao Lv, Yanlong Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal |
title | Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal |
title_full | Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal |
title_fullStr | Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal |
title_full_unstemmed | Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal |
title_short | Analysis of the Microstructure and Mechanical Properties of TiB(w)/Ti-6Al-4V Ti Matrix Composite Joint Fabricated Using TiCuNiZr Amorphous Brazing Filler Metal |
title_sort | analysis of the microstructure and mechanical properties of tib(w)/ti-6al-4v ti matrix composite joint fabricated using ticunizr amorphous brazing filler metal |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7918256/ https://www.ncbi.nlm.nih.gov/pubmed/33673257 http://dx.doi.org/10.3390/ma14040875 |
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