Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC
To overcome the tradeoff between strength and ductility of materials and obtain titanium matrix composites with excellent mechanical properties, in this study, the in situ-synthesized TiC particles and Ti-Al-V-Mo-Cr (Ti1400) alloy-reinforced Ti6Al4V (TC4) matrix composites ((Ti1400 + TiC)/TC4) were...
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| Format: | Article |
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MDPI AG
2023-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/5/965 |
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| author | Ni He Mingjia Li Guodong Sun Junjie Xu Mingyang Li Longlong Dong Yusheng Zhang |
| author_facet | Ni He Mingjia Li Guodong Sun Junjie Xu Mingyang Li Longlong Dong Yusheng Zhang |
| author_sort | Ni He |
| collection | DOAJ |
| description | To overcome the tradeoff between strength and ductility of materials and obtain titanium matrix composites with excellent mechanical properties, in this study, the in situ-synthesized TiC particles and Ti-Al-V-Mo-Cr (Ti1400) alloy-reinforced Ti6Al4V (TC4) matrix composites ((Ti1400 + TiC)/TC4) were fabricated by low-energy ball milling and spark plasma sintering. The inhomogeneous distribution of TiC particles and Ti1400 alloy, as well as the compositional and structural transition zone, were characterized. The TiC/TC4 composite displayed a significantly higher yield strength and tensile strength compared to the TC4 alloy. However, the total elongation of the TiC/TC4 composite was only 57% of that in the TC4 alloy. In contrast, the (Ti1400 + TiC)/TC4 composites exhibited noticeably higher total elongation than the TiC/TC4 composite. Furthermore, the tensile strength of the composite increased with the increase in Ti1400 alloy content. The increase in strength can be attributed to solid solution strengthening and fine grain strengthening. The compositional and structural transition zone, formed by element diffusion, provided a better interface combination between the reinforcements and TC4 matrix. In the transition zone and Ti1400 region, a large number of α/β interfaces can effectively alleviate the stress concentration, and the increase in the β phase can bear more plastic deformation, which is conducive to improving the elongation of the composite. As a result, the (Ti1400 + TiC)/TC4 composites exhibited simultaneous improvements in strength and ductility. |
| first_indexed | 2024-03-11T03:29:48Z |
| format | Article |
| id | doaj.art-960020840ef04536b5a1ef49562bd3fb |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T03:29:48Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-960020840ef04536b5a1ef49562bd3fb2023-11-18T02:28:20ZengMDPI AGMetals2075-47012023-05-0113596510.3390/met13050965Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiCNi He0Mingjia Li1Guodong Sun2Junjie Xu3Mingyang Li4Longlong Dong5Yusheng Zhang6School of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaXi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710075, ChinaXi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710075, ChinaXi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710075, ChinaXi’an Rare Metal Materials Institute Co., Ltd., Xi’an 710075, ChinaAdvanced Materials Research Central, Northwest Institute for Nonferrous Metal Research, Xi’an 710016, ChinaSchool of Materials Science and Engineering, Northeastern University, Shenyang 110819, ChinaTo overcome the tradeoff between strength and ductility of materials and obtain titanium matrix composites with excellent mechanical properties, in this study, the in situ-synthesized TiC particles and Ti-Al-V-Mo-Cr (Ti1400) alloy-reinforced Ti6Al4V (TC4) matrix composites ((Ti1400 + TiC)/TC4) were fabricated by low-energy ball milling and spark plasma sintering. The inhomogeneous distribution of TiC particles and Ti1400 alloy, as well as the compositional and structural transition zone, were characterized. The TiC/TC4 composite displayed a significantly higher yield strength and tensile strength compared to the TC4 alloy. However, the total elongation of the TiC/TC4 composite was only 57% of that in the TC4 alloy. In contrast, the (Ti1400 + TiC)/TC4 composites exhibited noticeably higher total elongation than the TiC/TC4 composite. Furthermore, the tensile strength of the composite increased with the increase in Ti1400 alloy content. The increase in strength can be attributed to solid solution strengthening and fine grain strengthening. The compositional and structural transition zone, formed by element diffusion, provided a better interface combination between the reinforcements and TC4 matrix. In the transition zone and Ti1400 region, a large number of α/β interfaces can effectively alleviate the stress concentration, and the increase in the β phase can bear more plastic deformation, which is conducive to improving the elongation of the composite. As a result, the (Ti1400 + TiC)/TC4 composites exhibited simultaneous improvements in strength and ductility.https://www.mdpi.com/2075-4701/13/5/965titanium matrix compositesmechanical propertiesin situ synthesispowder metallurgystrengthening mechanism |
| spellingShingle | Ni He Mingjia Li Guodong Sun Junjie Xu Mingyang Li Longlong Dong Yusheng Zhang Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC Metals titanium matrix composites mechanical properties in situ synthesis powder metallurgy strengthening mechanism |
| title | Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC |
| title_full | Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC |
| title_fullStr | Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC |
| title_full_unstemmed | Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC |
| title_short | Simultaneous Improvement in Strength and Ductility of TC4 Matrix Composites Reinforced with Ti1400 Alloy and In Situ-Synthesized TiC |
| title_sort | simultaneous improvement in strength and ductility of tc4 matrix composites reinforced with ti1400 alloy and in situ synthesized tic |
| topic | titanium matrix composites mechanical properties in situ synthesis powder metallurgy strengthening mechanism |
| url | https://www.mdpi.com/2075-4701/13/5/965 |
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