Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid Solidification
A Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> quasicrystal (QCs) rod and ribbons were prepared by conventional casting and rapid solidification. The X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and differ...
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MDPI AG
2021-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/10/1563 |
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| author | Junli Hou Zhong Yang Hongbo Duan Yiyi Feng Yongchun Guo Jianping Li |
| author_facet | Junli Hou Zhong Yang Hongbo Duan Yiyi Feng Yongchun Guo Jianping Li |
| author_sort | Junli Hou |
| collection | DOAJ |
| description | A Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> quasicrystal (QCs) rod and ribbons were prepared by conventional casting and rapid solidification. The X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and differential scanning calorimeter (DSC) techniques were used to investigate the microtissue, phase composition, and solidification features of the samples; the nano-indentation test was carried out at room temperature. The results show that a mixture of the α-Ti(Zr) phase and the icosahedral quasicrystal (I-phase) was formed in the Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> rod; the microstructure of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> ribbons mainly consisted of the I-phase. The solidification mechanism of the I-phase was different in the two alloys. The I-phase in the quasicrystalline rod was formed by packet reaction while in the ribbons it was generated directly from the liquid. At room temperature, both samples had relatively high hardness and elastic modulus; the elastic modulus of the ribbons is 76 GPa, higher than the 45 GPa of the rod. The hardness of the ribbons was more than twice that of the rod. |
| first_indexed | 2024-03-10T06:22:53Z |
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| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T06:22:53Z |
| publishDate | 2021-09-01 |
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| spelling | doaj.art-4f6c5408d1ed49e281ba10b93cd4db012023-11-22T19:08:45ZengMDPI AGMetals2075-47012021-09-011110156310.3390/met11101563Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid SolidificationJunli Hou0Zhong Yang1Hongbo Duan2Yiyi Feng3Yongchun Guo4Jianping Li5School of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaA Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> quasicrystal (QCs) rod and ribbons were prepared by conventional casting and rapid solidification. The X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and differential scanning calorimeter (DSC) techniques were used to investigate the microtissue, phase composition, and solidification features of the samples; the nano-indentation test was carried out at room temperature. The results show that a mixture of the α-Ti(Zr) phase and the icosahedral quasicrystal (I-phase) was formed in the Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> rod; the microstructure of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> ribbons mainly consisted of the I-phase. The solidification mechanism of the I-phase was different in the two alloys. The I-phase in the quasicrystalline rod was formed by packet reaction while in the ribbons it was generated directly from the liquid. At room temperature, both samples had relatively high hardness and elastic modulus; the elastic modulus of the ribbons is 76 GPa, higher than the 45 GPa of the rod. The hardness of the ribbons was more than twice that of the rod.https://www.mdpi.com/2075-4701/11/10/1563Ti-Zr-Ni alloyquasicrystalmicrostructurenanoindentation |
| spellingShingle | Junli Hou Zhong Yang Hongbo Duan Yiyi Feng Yongchun Guo Jianping Li Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid Solidification Metals Ti-Zr-Ni alloy quasicrystal microstructure nanoindentation |
| title | Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid Solidification |
| title_full | Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid Solidification |
| title_fullStr | Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid Solidification |
| title_full_unstemmed | Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid Solidification |
| title_short | Microstructure and Nanoindentation Behavior of Ti<sub>40</sub>Zr<sub>40</sub>Ni<sub>20</sub> Quasicrystal Alloy by Casting and Rapid Solidification |
| title_sort | microstructure and nanoindentation behavior of ti sub 40 sub zr sub 40 sub ni sub 20 sub quasicrystal alloy by casting and rapid solidification |
| topic | Ti-Zr-Ni alloy quasicrystal microstructure nanoindentation |
| url | https://www.mdpi.com/2075-4701/11/10/1563 |
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