Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVD
The inherent brittleness of tungsten severely limits its application as plasma-facing materials (PFMs). Tungsten fiber (Wf) reinforced tungsten (W) composites (Wf/W) offer a promising toughening approach for tungsten. However, this toughening method faces significant challenges, such as how to optim...
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2025-06-01
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| author | Chuan Wu Youping Lu Juan Du Pan Wen Jun Tang Tianyu Zhao Jiming Chen Pinghuai Wang Xiang Liu |
| author_facet | Chuan Wu Youping Lu Juan Du Pan Wen Jun Tang Tianyu Zhao Jiming Chen Pinghuai Wang Xiang Liu |
| author_sort | Chuan Wu |
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| description | The inherent brittleness of tungsten severely limits its application as plasma-facing materials (PFMs). Tungsten fiber (Wf) reinforced tungsten (W) composites (Wf/W) offer a promising toughening approach for tungsten. However, this toughening method faces significant challenges, such as how to optimize the interface strength and preventing damage to the fiber-reinforced structure. In this study, four types of interfaces (Y, Cr, Y2O3, and YSZ) were prepared using magnetron sputtering technology, followed by the fabrication of single Wf-reinforced W composites via chemical vapor deposition (CVD). The fracture behavior of the Wf/W composite before and after the annealing process was investigated through three-point bending tests. The results indicate that the interfaces including yttrium (Y), yttrium oxide (Y2O3), and yttria-stabilized zirconia (YSZ) all exhibit weak binding strength, leading to interface debonding during the three-point bending test and resulting in ductile fracture behavior for the composite. In contrast, the chromium (Cr) interface displays a high binding strength and lead to brittle fracture behavior for the composite. After annealing at 1000 °C, the binding strength of Y2O3 and YSZ interfaces increases, which causes the brittle fracture behavior of the composite. After annealing at 1600 °C, the Cr interface diffused into the Wf and caused the recrystallization of the Wf. The Y interface underwent melting and solidification, leading to a decrease of the binding strength. The interface strength ranks as follows: Cr > YSZ > Y2O3 > Y. |
| format | Article |
| id | doaj-art-99d28ef303da40e798d502c8e42c90ec |
| institution | OA Journals |
| issn | 2352-1791 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
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| series | Nuclear Materials and Energy |
| spelling | doaj-art-99d28ef303da40e798d502c8e42c90ec2025-08-20T02:34:33ZengElsevierNuclear Materials and Energy2352-17912025-06-014310195210.1016/j.nme.2025.101952Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVDChuan Wu0Youping Lu1Juan Du2Pan Wen3Jun Tang4Tianyu Zhao5Jiming Chen6Pinghuai Wang7Xiang Liu8Fusion Science Center, Southwestern Institute of Physics, Chengdu 610225. China; Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaFusion Science Center, Southwestern Institute of Physics, Chengdu 610225. ChinaFusion Science Center, Southwestern Institute of Physics, Chengdu 610225. China; Corresponding author.Fusion Science Center, Southwestern 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, ChinaFusion Science Center, Southwestern Institute of Physics, Chengdu 610225. China; Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, ChinaFusion Science Center, Southwestern Institute of Physics, Chengdu 610225. ChinaFusion Science Center, Southwestern Institute of Physics, Chengdu 610225. ChinaFusion Science Center, Southwestern Institute of Physics, Chengdu 610225. ChinaThe inherent brittleness of tungsten severely limits its application as plasma-facing materials (PFMs). Tungsten fiber (Wf) reinforced tungsten (W) composites (Wf/W) offer a promising toughening approach for tungsten. However, this toughening method faces significant challenges, such as how to optimize the interface strength and preventing damage to the fiber-reinforced structure. In this study, four types of interfaces (Y, Cr, Y2O3, and YSZ) were prepared using magnetron sputtering technology, followed by the fabrication of single Wf-reinforced W composites via chemical vapor deposition (CVD). The fracture behavior of the Wf/W composite before and after the annealing process was investigated through three-point bending tests. The results indicate that the interfaces including yttrium (Y), yttrium oxide (Y2O3), and yttria-stabilized zirconia (YSZ) all exhibit weak binding strength, leading to interface debonding during the three-point bending test and resulting in ductile fracture behavior for the composite. In contrast, the chromium (Cr) interface displays a high binding strength and lead to brittle fracture behavior for the composite. After annealing at 1000 °C, the binding strength of Y2O3 and YSZ interfaces increases, which causes the brittle fracture behavior of the composite. After annealing at 1600 °C, the Cr interface diffused into the Wf and caused the recrystallization of the Wf. The Y interface underwent melting and solidification, leading to a decrease of the binding strength. The interface strength ranks as follows: Cr > YSZ > Y2O3 > Y.http://www.sciencedirect.com/science/article/pii/S2352179125000948Fiber reinforcedTungsten fiberInterfaceThree-point bendingPseudo toughening |
| spellingShingle | Chuan Wu Youping Lu Juan Du Pan Wen Jun Tang Tianyu Zhao Jiming Chen Pinghuai Wang Xiang Liu Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVD Nuclear Materials and Energy Fiber reinforced Tungsten fiber Interface Three-point bending Pseudo toughening |
| title | Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVD |
| title_full | Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVD |
| title_fullStr | Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVD |
| title_full_unstemmed | Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVD |
| title_short | Study on the annealing and three-point bending fracture behavior of single W fiber-reinforced W composites with multiple interfaces prepared by CVD |
| title_sort | study on the annealing and three point bending fracture behavior of single w fiber reinforced w composites with multiple interfaces prepared by cvd |
| topic | Fiber reinforced Tungsten fiber Interface Three-point bending Pseudo toughening |
| url | http://www.sciencedirect.com/science/article/pii/S2352179125000948 |
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