Cargando…
Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique
The attractive strain burst phenomenon, so-called “pop-in”, during indentation-induced deformation at a very small scale is discussed as a fundamental deformation behavior in various materials. The nanoindentation technique can probe a mechanical response to a very low applied load, and the behavior...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068951/ https://www.ncbi.nlm.nih.gov/pubmed/33918894 http://dx.doi.org/10.3390/ma14081879 |
_version_ | 1783683123049922560 |
---|---|
author | Ohmura, Takahito Wakeda, Masato |
author_facet | Ohmura, Takahito Wakeda, Masato |
author_sort | Ohmura, Takahito |
collection | PubMed |
description | The attractive strain burst phenomenon, so-called “pop-in”, during indentation-induced deformation at a very small scale is discussed as a fundamental deformation behavior in various materials. The nanoindentation technique can probe a mechanical response to a very low applied load, and the behavior can be mechanically and physically analyzed. The pop-in phenomenon can be understood as incipient plasticity under an indentation load, and dislocation nucleation at a small volume is a major mechanism for the event. Experimental and computational studies of the pop-in phenomenon are reviewed in terms of pioneering discovery, experimental clarification, physical modeling in the thermally activated process, crystal plasticity, effects of pre-existing lattice defects including dislocations, in-solution alloying elements, and grain boundaries, as well as atomistic modeling in computational simulation. The related non-dislocation behaviors are also discussed in a shear transformation zone in bulk metallic glass materials and phase transformation in semiconductors and metals. A future perspective from both engineering and scientific views is finally provided for further interpretation of the mechanical behaviors of materials. |
format | Online Article Text |
id | pubmed-8068951 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-80689512021-04-26 Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique Ohmura, Takahito Wakeda, Masato Materials (Basel) Review The attractive strain burst phenomenon, so-called “pop-in”, during indentation-induced deformation at a very small scale is discussed as a fundamental deformation behavior in various materials. The nanoindentation technique can probe a mechanical response to a very low applied load, and the behavior can be mechanically and physically analyzed. The pop-in phenomenon can be understood as incipient plasticity under an indentation load, and dislocation nucleation at a small volume is a major mechanism for the event. Experimental and computational studies of the pop-in phenomenon are reviewed in terms of pioneering discovery, experimental clarification, physical modeling in the thermally activated process, crystal plasticity, effects of pre-existing lattice defects including dislocations, in-solution alloying elements, and grain boundaries, as well as atomistic modeling in computational simulation. The related non-dislocation behaviors are also discussed in a shear transformation zone in bulk metallic glass materials and phase transformation in semiconductors and metals. A future perspective from both engineering and scientific views is finally provided for further interpretation of the mechanical behaviors of materials. MDPI 2021-04-09 /pmc/articles/PMC8068951/ /pubmed/33918894 http://dx.doi.org/10.3390/ma14081879 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Review Ohmura, Takahito Wakeda, Masato Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique |
title | Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique |
title_full | Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique |
title_fullStr | Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique |
title_full_unstemmed | Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique |
title_short | Pop-In Phenomenon as a Fundamental Plasticity Probed by Nanoindentation Technique |
title_sort | pop-in phenomenon as a fundamental plasticity probed by nanoindentation technique |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8068951/ https://www.ncbi.nlm.nih.gov/pubmed/33918894 http://dx.doi.org/10.3390/ma14081879 |
work_keys_str_mv | AT ohmuratakahito popinphenomenonasafundamentalplasticityprobedbynanoindentationtechnique AT wakedamasato popinphenomenonasafundamentalplasticityprobedbynanoindentationtechnique |