On impact properties of Mo-ZrC gradient metal ceramics

XIE Yushan; LU Jianhua; XU Songlin; SHU Zaiqin; ZHANG Jinyong

doi:10.11883/bzycj-2022-0374

Volume 43 Issue 3

Mar. 2023

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Article Navigation > Explosion And Shock Waves > 2023 > 43(3): 033101

XIE Yushan, LU Jianhua, XU Songlin, SHU Zaiqin, ZHANG Jinyong. On impact properties of Mo-ZrC gradient metal ceramics[J]. Explosion And Shock Waves, 2023, 43(3): 033101. doi: 10.11883/bzycj-2022-0374

Citation:

XIE Yushan, LU Jianhua, XU Songlin, SHU Zaiqin, ZHANG Jinyong. On impact properties of Mo-ZrC gradient metal ceramics[J]. Explosion And Shock Waves, 2023, 43(3): 033101. doi: 10.11883/bzycj-2022-0374

XIE Yushan, LU Jianhua, XU Songlin, SHU Zaiqin, ZHANG Jinyong. On impact properties of Mo-ZrC gradient metal ceramics[J]. Explosion And Shock Waves, 2023, 43(3): 033101. doi: 10.11883/bzycj-2022-0374

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On impact properties of Mo-ZrC gradient metal ceramics

doi: 10.11883/bzycj-2022-0374

1.
CAS Key Laboratory for Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, Anhui, China
2.
United Laboratory of High Pressure Physics and Earthquake Science, Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China
3.
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received Date: 2022-08-26
Rev Recd Date: 2022-11-03

Available Online: 2023-02-23

Publish Date: 2023-03-05

Abstract

Abstract

Molybdenum (Mo) and zirconium carbide (ZrC) ceramic possess high strength and good wear resistance. Specific gradient changes of layered gradient structure can effectively take advantage of the two materials. To study the effects of gradient structure and impact direction on the dynamic responses of Mo-ZrC layered gradient cermet, the low-speed dynamic compression test of layered gradient cermet was launched by the split Hopkinson pressure bar device combined with high-speed photography technology, and three kinds of samples with different graded structures were pre-designed and sintered. Based on the digital image correlation (DIC) technology, the effects of gradient structure and impact direction on the failure modes of layered gradient cermet were discussed in detail. The propagation of the one-dimensional stress wave in the layered gradient composite was analyzed according to the equivalent properties of each layer of graded cermet calculated by the Mori-Tanaka theory. Results show as follows. (1) Under the same loading condition, the layered gradient structure has an important influence on material strength and integrity of the damaged product. Samples with a higher overall metal content exhibit better performance. In the process of impaction, the dynamic impaction responses can divide into three stages: compression, crack nucleation, and penetration. According to the results of high-speed photography, different gradient structure and direction of impact damage present different temporal and modes. (2) With the help of the calculation results based on the DIC method, the local deformation development of layered gradient cermet is tracked. When the local incremental development reaches a critical state, the local deformation development turns to the formation and accumulation of micro-cracks, which would lead to overall failure eventually. (3) Based on the one-dimensional stress wave propagation theory of layered gradient materials, the changing of impact direction influences the permeability and reflection coefficient of the stress wave, different gradient structure design shows sensitivity difference to the impact direction change, and there are extreme values.
- impact dynamics,
- Mo-ZrC cermet,
- layered structure,
- stress wave propagation

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