A transforming interpenetrating-phase cermet with high strength and energy dissipation capacity

Cermets generally exhibit a trade-off between strength and energy dissipation capacity. By applying a dual design strategy combining bioinspired architecting and metastability engineering, we developed a transforming interpenetrating-phase cermet made from zirconia ceramic preform infiltrated with a...

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Bibliographic Details
Published in:Materials research letters 2024-10, p.1-9
Main Authors: Jia, Shuangyue, Zheng, Wangshu, Lock, Daniel Wen Hao, Li, Linghai, Zhao, Lei, Gan, Chee Lip, Guo, Qiang
Format: Article
Language:English
Subjects:
cermet
energy dissipation
interpenetrating-phase composite
Phase transformation
yield strength
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Summary:Cermets generally exhibit a trade-off between strength and energy dissipation capacity. By applying a dual design strategy combining bioinspired architecting and metastability engineering, we developed a transforming interpenetrating-phase cermet made from zirconia ceramic preform infiltrated with an Al-Zn-Mg-Cu alloy. The cermet micro-pillars possessed compressive yield strengths of 773 ± 62 MPa and energy dissipation densities of 110 ± 8 MJ·m−3, 50% and 45% higher than those of the monolithic Al alloy, respectively. These results are attributed to the interpenetrating-phase architecture, stress-induced martensitic transformation in the ceramics, robust interfacial bonding, and high-density dislocations near the interfaces.
ISSN:2166-3831
2166-3831
DOI:10.1080/21663831.2024.2418008