Realizing reversible phase transformation of shape memory ceramics constrained in aluminum
Small-scale shape memory ceramics exhibit superior shape memory or superelasticity properties, while their integration into a matrix material and the subsequent attainment of their reversible tetragonal-monoclinic phase transformations remains a challenge. Here, cerium-doped zirconia (CZ) reinforced...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/173011 |
| _version_ | 1811696962607513600 |
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| author | Zheng, Wangshu Shi, Yan Zhao, Lei Jia, Shuangyue Li, Linghai Gan, Chee Lip Zhang, Di Guo, Qiang |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Zheng, Wangshu Shi, Yan Zhao, Lei Jia, Shuangyue Li, Linghai Gan, Chee Lip Zhang, Di Guo, Qiang |
| author_sort | Zheng, Wangshu |
| collection | NTU |
| description | Small-scale shape memory ceramics exhibit superior shape memory or superelasticity properties, while their integration into a matrix material and the subsequent attainment of their reversible tetragonal-monoclinic phase transformations remains a challenge. Here, cerium-doped zirconia (CZ) reinforced aluminum (Al) matrix composite is fabricated, and both macroscopic and microscopic mechanical tests reveal more than doubled compressive strength and energy absorbance of the composites as compared with pure Al. Full austenitization in the CZ single-crystal clusters is achieved when they are constrained by the Al matrix, and reversible martensitic transformation triggered by thermal or stress stimuli is observed in the composite micro-pillars without causing fracture in the composite. These results are interpreted by the strong geometric confinement offered by the Al matrix, the robust CZ/Al interface and the local three-dimensional particle network/force-chain configuration that effectively transfer mechanical loads, and the decent flowability of the matrix that accommodates the volume change during phase transformation. |
| first_indexed | 2024-10-01T07:47:42Z |
| format | Journal Article |
| id | ntu-10356/173011 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:47:42Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1730112024-01-12T15:47:29Z Realizing reversible phase transformation of shape memory ceramics constrained in aluminum Zheng, Wangshu Shi, Yan Zhao, Lei Jia, Shuangyue Li, Linghai Gan, Chee Lip Zhang, Di Guo, Qiang School of Materials Science and Engineering Engineering::Materials Compressive Strength Mechanical Test Small-scale shape memory ceramics exhibit superior shape memory or superelasticity properties, while their integration into a matrix material and the subsequent attainment of their reversible tetragonal-monoclinic phase transformations remains a challenge. Here, cerium-doped zirconia (CZ) reinforced aluminum (Al) matrix composite is fabricated, and both macroscopic and microscopic mechanical tests reveal more than doubled compressive strength and energy absorbance of the composites as compared with pure Al. Full austenitization in the CZ single-crystal clusters is achieved when they are constrained by the Al matrix, and reversible martensitic transformation triggered by thermal or stress stimuli is observed in the composite micro-pillars without causing fracture in the composite. These results are interpreted by the strong geometric confinement offered by the Al matrix, the robust CZ/Al interface and the local three-dimensional particle network/force-chain configuration that effectively transfer mechanical loads, and the decent flowability of the matrix that accommodates the volume change during phase transformation. Published version This work is financially supported from the National Key R&D program of China (2022YFB3705704), and the National Natural Science Foundation of China (Nos. 52192595, D.Z. and 52001204, L.Z.). 2024-01-09T01:30:01Z 2024-01-09T01:30:01Z 2023 Journal Article Zheng, W., Shi, Y., Zhao, L., Jia, S., Li, L., Gan, C. L., Zhang, D. & Guo, Q. (2023). Realizing reversible phase transformation of shape memory ceramics constrained in aluminum. Nature Communications, 14(1), 7103-. https://dx.doi.org/10.1038/s41467-023-42815-0 2041-1723 https://hdl.handle.net/10356/173011 10.1038/s41467-023-42815-0 37925460 2-s2.0-85175823649 1 14 7103 en Nature Communications © 2023 The Author(s). Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |
| spellingShingle | Engineering::Materials Compressive Strength Mechanical Test Zheng, Wangshu Shi, Yan Zhao, Lei Jia, Shuangyue Li, Linghai Gan, Chee Lip Zhang, Di Guo, Qiang Realizing reversible phase transformation of shape memory ceramics constrained in aluminum |
| title | Realizing reversible phase transformation of shape memory ceramics constrained in aluminum |
| title_full | Realizing reversible phase transformation of shape memory ceramics constrained in aluminum |
| title_fullStr | Realizing reversible phase transformation of shape memory ceramics constrained in aluminum |
| title_full_unstemmed | Realizing reversible phase transformation of shape memory ceramics constrained in aluminum |
| title_short | Realizing reversible phase transformation of shape memory ceramics constrained in aluminum |
| title_sort | realizing reversible phase transformation of shape memory ceramics constrained in aluminum |
| topic | Engineering::Materials Compressive Strength Mechanical Test |
| url | https://hdl.handle.net/10356/173011 |
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