Micron-Scale Deformation: A Coupled In Situ Study of Strain Bursts and Acoustic Emission
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10370664" target="_blank" >RIV/00216208:11320/17:10370664 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1017/S1431927617012594" target="_blank" >http://dx.doi.org/10.1017/S1431927617012594</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1017/S1431927617012594" target="_blank" >10.1017/S1431927617012594</a>
Alternative languages
Result language
angličtina
Original language name
Micron-Scale Deformation: A Coupled In Situ Study of Strain Bursts and Acoustic Emission
Original language description
Plastic deformation of micron-scale crystalline materials differs considerably from bulk samples as it is characterized by stochastic strain bursts. To obtain a detailed picture of the intermittent deformation phenomena, numerous micron-sized specimens must be fabricated and tested. An improved focused ion beam fabrication method is proposed to prepare non-tapered micropillars with excellent control over their shape. Moreover, the fabrication time is less compared with other methods. The in situ compression device developed in our laboratory allows high-accuracy sample positioning and force/displacement measurements with high data sampling rates. The collective avalanche-like motion of the dislocations is observed as stress decreases on the stress-strain curves. An acoustic emission (AE) technique was employed for the first time to study the deformation behavior of micropillars. The AE technique provides important additional in situ information about the underlying processes during plastic deformation and is especially sensitive to the collective avalanche-like motion of the dislocations observed as the stress decreases on the deformation curves.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA15-10821S" target="_blank" >GA15-10821S: Size effect in plastic deformation of materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Microscopy and Microanalysis
ISSN
1431-9276
e-ISSN
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Volume of the periodical
23
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
1076-1081
UT code for WoS article
000419002200002
EID of the result in the Scopus database
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