The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> Irradiation
Tungsten fiber-reinforced tungsten composite (W<sub>f</sub>/W) material is considered a plasma-facing material (PFM) with good application prospects. Commercial tungsten wire (fiber) prepared through forging and drawing processes has excellent mechanical properties, as well as a very hig...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/13/6/920 |
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| author | Juan Du Jialin Li Chuan Wu Qihang Zhang Pan Wen Jun Tang Tianyu Zhao Pinghuai Wang Xiang Liu Jiming Chen |
| author_facet | Juan Du Jialin Li Chuan Wu Qihang Zhang Pan Wen Jun Tang Tianyu Zhao Pinghuai Wang Xiang Liu Jiming Chen |
| author_sort | Juan Du |
| collection | DOAJ |
| description | Tungsten fiber-reinforced tungsten composite (W<sub>f</sub>/W) material is considered a plasma-facing material (PFM) with good application prospects. Commercial tungsten wire (fiber) prepared through forging and drawing processes has excellent mechanical properties, as well as a very high recrystallization temperature due to the unique texture of it grain structure. Commercial tungsten fiber is the most proper reinforcement for W<sub>f</sub>/W. The change in the properties of tungsten fiber because of neutron irradiation makes it inevitable for W<sub>f</sub>/W to be used as PFMs. However, there is very little research on the change in the properties of tungsten fiber caused by neutron irradiation. In this work, we used heavy ion irradiation to simulate the displacement damage generated by neutron irradiation to explore the alteration of the properties of a commercial tungsten fiber caused by neutron irradiation. The investigated subject was tungsten fiber with a diameter of 300 μm. The irradiation source was 7.5 MeV Au<sup>2+</sup>, which generated a maximum displacement damage of 60 dpa at a depth of 400 nm, and the irradiation influenced depth was 1000 nm. Because of the irradiation, significant lattice distortion occurred within the tungsten fiber, resulting in the transition from (110) texture to (100) texture at the fiber’s cross-section. The results of the Schmidt factor and Taylor factor analysis indicate a decrease in the plasticity of the tungsten fiber after irradiation, but it did not completely lose its plasticity. The results of the nanoindentation test confirmed the radiation hardening. After irradiation, the hardness of the tungsten fiber increased by approximately 0.33 GPa, but this increase was relatively small compared to other tungsten-based materials. This indicates that commercial tungsten fiber is a low-cost and highly reliable reinforcement material for W<sub>f</sub>/W composite materials. |
| first_indexed | 2024-03-11T02:35:36Z |
| format | Article |
| id | doaj.art-3397050af1384c4498fdf9780147d68f |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-11T02:35:36Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-3397050af1384c4498fdf9780147d68f2023-11-18T09:56:36ZengMDPI AGCrystals2073-43522023-06-0113692010.3390/cryst13060920The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> IrradiationJuan Du0Jialin Li1Chuan Wu2Qihang Zhang3Pan Wen4Jun Tang5Tianyu Zhao6Pinghuai Wang7Xiang Liu8Jiming Chen9Southwestern Institute of Physics, Chengdu 610225, ChinaSouthwestern Institute of Physics, Chengdu 610225, ChinaKey Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaSouthwestern Institute of Physics, Chengdu 610225, ChinaKey Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaKey Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaSouthwestern Institute of Physics, Chengdu 610225, ChinaSouthwestern Institute of Physics, Chengdu 610225, ChinaSouthwestern Institute of Physics, Chengdu 610225, ChinaSouthwestern Institute of Physics, Chengdu 610225, ChinaTungsten fiber-reinforced tungsten composite (W<sub>f</sub>/W) material is considered a plasma-facing material (PFM) with good application prospects. Commercial tungsten wire (fiber) prepared through forging and drawing processes has excellent mechanical properties, as well as a very high recrystallization temperature due to the unique texture of it grain structure. Commercial tungsten fiber is the most proper reinforcement for W<sub>f</sub>/W. The change in the properties of tungsten fiber because of neutron irradiation makes it inevitable for W<sub>f</sub>/W to be used as PFMs. However, there is very little research on the change in the properties of tungsten fiber caused by neutron irradiation. In this work, we used heavy ion irradiation to simulate the displacement damage generated by neutron irradiation to explore the alteration of the properties of a commercial tungsten fiber caused by neutron irradiation. The investigated subject was tungsten fiber with a diameter of 300 μm. The irradiation source was 7.5 MeV Au<sup>2+</sup>, which generated a maximum displacement damage of 60 dpa at a depth of 400 nm, and the irradiation influenced depth was 1000 nm. Because of the irradiation, significant lattice distortion occurred within the tungsten fiber, resulting in the transition from (110) texture to (100) texture at the fiber’s cross-section. The results of the Schmidt factor and Taylor factor analysis indicate a decrease in the plasticity of the tungsten fiber after irradiation, but it did not completely lose its plasticity. The results of the nanoindentation test confirmed the radiation hardening. After irradiation, the hardness of the tungsten fiber increased by approximately 0.33 GPa, but this increase was relatively small compared to other tungsten-based materials. This indicates that commercial tungsten fiber is a low-cost and highly reliable reinforcement material for W<sub>f</sub>/W composite materials.https://www.mdpi.com/2073-4352/13/6/920plasma-facing materialstungsten fiberheavy ion irradiationirradiation hardening |
| spellingShingle | Juan Du Jialin Li Chuan Wu Qihang Zhang Pan Wen Jun Tang Tianyu Zhao Pinghuai Wang Xiang Liu Jiming Chen The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> Irradiation Crystals plasma-facing materials tungsten fiber heavy ion irradiation irradiation hardening |
| title | The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> Irradiation |
| title_full | The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> Irradiation |
| title_fullStr | The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> Irradiation |
| title_full_unstemmed | The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> Irradiation |
| title_short | The Microstructural and Hardness Changes of Tungsten Fiber after Au<sup>2+</sup> Irradiation |
| title_sort | microstructural and hardness changes of tungsten fiber after au sup 2 sup irradiation |
| topic | plasma-facing materials tungsten fiber heavy ion irradiation irradiation hardening |
| url | https://www.mdpi.com/2073-4352/13/6/920 |
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