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
Verfasserangaben: | 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 |
Titel des übergeordneten Werkes (Englisch): | arXiv |
Verlag: | arXiv |
Dokumentart: | Preprint |
Sprache: | Englisch |
Datum der Veröffentlichung (online): | 26.08.2021 |
Datum der Erstveröffentlichung: | 26.08.2021 |
Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Datum der Freischaltung: | 20.02.2024 |
Freies Schlagwort / Tag: | SrNi2P2; density functional theory; maximum recoverable strain; micropillar compression; pseudoelasticity |
Ausgabe / Heft: | 2108.11999 Version 1 |
Auflage: | Version 1 |
Seitenzahl: | 45 |
HeBIS-PPN: | 516154818 |
Institute: | Physik / Physik |
DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Lizenz (Deutsch): | ![]() |