Pseudoelasticity of SrNi2P2 micropillar via double lattice collapse and expansion
- The maximum recoverable strain of most crystalline solids is less than 1% because plastic deformation or fracture usually occurs at a small strain. In this work, we show that a SrNi2P2 micropillar exhibits pseudoelasticity with a large maximum recoverable strain of ~14% under uniaxial compression via unique reversible structural transformation, double lattice collapse-expansion that is repeatable under cyclic loading. Its high yield strength (~3.8±0.5 GPa) and large maximum recoverable strain bring out the ultrahigh modulus of resilience (~146±19MJ/m3) a few orders of magnitude higher than that of most engineering materials. The double lattice collapse-expansion mechanism shows stress-strain behaviors similar with that of conventional shape memory alloys, such as hysteresis and thermo-mechanical actuation, even though the structural changes involved are completely different. Our work suggests that the discovery of a new class of high performance ThCr2Si2-structured materials will open new research opportunities in the field of pseudoelasticity
| Author: | Shuyang XiaoORCiD, Vladislav BorisovORCiD, Guilherme Gorgen LesseuxORCiD, Sarshad RommelORCiD, Gyuho SongORCiD, Jessica M. MaitaORCiD, Mark AindowORCiD, Roser ValentíORCiDGND, Paul C. CanfieldORCiD, Seok-Woo LeeORCiD |
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| URN: | urn:nbn:de:hebis:30:3-824519 |
| URL: | https://arxiv.org/abs/2108.11999v1 |
| DOI: | https://doi.org/10.48550/arXiv.2108.11999 |
| ArXiv Id: | http://arxiv.org/abs/2108.11999v1 |
| Parent Title (English): | arXiv |
| Publisher: | arXiv |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 2021/08/26 |
| Date of first Publication: | 2021/08/26 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2024/02/20 |
| Tag: | SrNi2P2; density functional theory; maximum recoverable strain; micropillar compression; pseudoelasticity |
| Issue: | 2108.11999 Version 1 |
| Edition: | Version 1 |
| Page Number: | 45 |
| HeBIS-PPN: | 516154818 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 4.0 |
