Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum Composite
A TiAl composite containing hybrid particles and whisker reinforcements is fabricated by vacuum melting. The results of this study show that the comprehensive mechanical properties and refining effect of the material are best when the content of reinforcement is 1 wt.%, and then the mechanical prope...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/13/4661 |
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| author | Sen Cui Chunxiang Cui Xin Wang |
| author_facet | Sen Cui Chunxiang Cui Xin Wang |
| author_sort | Sen Cui |
| collection | DOAJ |
| description | A TiAl composite containing hybrid particles and whisker reinforcements is fabricated by vacuum melting. The results of this study show that the comprehensive mechanical properties and refining effect of the material are best when the content of reinforcement is 1 wt.%, and then the mechanical properties begin to deteriorate as the content increases further. Finely dispersed NbC particles and uniformly dispersed Ti<sub>2</sub>AlC whiskers are the ideal second phases. The synergistic strengthening effect of NbC particles and in situ Ti<sub>2</sub>AlC whiskers are key to the improvement of mechanical properties. Compared with the TiAlNb matrix, the fracture stress/strain of the composite at 1073 K is improved from 612 MPa/19.4% to 836 MPa/26.6%; the fracture toughness at room temperature is improved from 18.8 MPa/m<sup>2</sup> to 27.4 MPa/m<sup>2</sup>. |
| first_indexed | 2024-03-11T01:36:02Z |
| format | Article |
| id | doaj.art-3a87bfae58bc4a69887024f4fd876b74 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T01:36:02Z |
| publishDate | 2023-06-01 |
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| series | Materials |
| spelling | doaj.art-3a87bfae58bc4a69887024f4fd876b742023-11-18T16:58:00ZengMDPI AGMaterials1996-19442023-06-011613466110.3390/ma16134661Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum CompositeSen Cui0Chunxiang Cui1Xin Wang2School of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, ChinaA TiAl composite containing hybrid particles and whisker reinforcements is fabricated by vacuum melting. The results of this study show that the comprehensive mechanical properties and refining effect of the material are best when the content of reinforcement is 1 wt.%, and then the mechanical properties begin to deteriorate as the content increases further. Finely dispersed NbC particles and uniformly dispersed Ti<sub>2</sub>AlC whiskers are the ideal second phases. The synergistic strengthening effect of NbC particles and in situ Ti<sub>2</sub>AlC whiskers are key to the improvement of mechanical properties. Compared with the TiAlNb matrix, the fracture stress/strain of the composite at 1073 K is improved from 612 MPa/19.4% to 836 MPa/26.6%; the fracture toughness at room temperature is improved from 18.8 MPa/m<sup>2</sup> to 27.4 MPa/m<sup>2</sup>.https://www.mdpi.com/1996-1944/16/13/4661strengtheningTiAlmetal matrix composite |
| spellingShingle | Sen Cui Chunxiang Cui Xin Wang Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum Composite Materials strengthening TiAl metal matrix composite |
| title | Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum Composite |
| title_full | Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum Composite |
| title_fullStr | Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum Composite |
| title_full_unstemmed | Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum Composite |
| title_short | Microstructure and Mechanical Properties of Dual Scaled NbC/Ti<sub>2</sub>AlC Reinforced Titanium–Aluminum Composite |
| title_sort | microstructure and mechanical properties of dual scaled nbc ti sub 2 sub alc reinforced titanium aluminum composite |
| topic | strengthening TiAl metal matrix composite |
| url | https://www.mdpi.com/1996-1944/16/13/4661 |
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