Nanoindentation and microbending analyses of glassy and crystalline Zr(–Hf)–Cu thin-film alloys
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F20%3A43959072" target="_blank" >RIV/49777513:23210/20:43959072 - isvavai.cz</a>
Alternative codes found
RIV/49777513:23520/20:43959072
Result on the web
<a href="https://doi.org/10.1016/j.surfcoat.2020.126139" target="_blank" >https://doi.org/10.1016/j.surfcoat.2020.126139</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.surfcoat.2020.126139" target="_blank" >10.1016/j.surfcoat.2020.126139</a>
Alternative languages
Result language
angličtina
Original language name
Nanoindentation and microbending analyses of glassy and crystalline Zr(–Hf)–Cu thin-film alloys
Original language description
Nanoindentation and microbending testing were used to investigate the mechanical properties of Zr(‒Hf)‒Cu thin-film alloys prepared by nonreactive magnetron co-sputtering. A detailed analysis of nanoindentation data and microscopic images of indents allowed a more precise determination of the effective Young's modulus of the films thanks to taking the pile-up effect into account. Microbending testing in a scanning electron microscope was performed with microcantilevers fabricated by focused ion beam and the data were evaluated using a finite element method model. As outputs of this elasto-plastic model, Young's modulus, yield strength, elastic strain, apparent yield point and approximate ultimate strength and strain of the films were determined. From material point of view, the effect of elemental composition (Cu content and Hf substitution) and the structure (glassy and crystalline) was investigated and discussed. It was shown that the substitution of Hf for Zr has less pronounced effect on the mechanical properties than the increase in the Cu content in the films that leads to a pronounced increase in the hardness, Young's modulus, elastic strain, yield strength, apparent yield point and ultimate strength but also to a decrease in the plastic parameter “k” and ultimate strain. Furthermore, a different atomic ordering in the crystalline and glassy Zr‒Cu films of the identical elemental composition results in differences in their mechanical properties and deformation behavior. The crystalline film was observed to be harder and stiffer with approximately the same elastic strain but higher yield strength and its plastic deformation was free of shear band events.
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
20506 - Coating and films
Result continuities
Project
<a href="/en/project/LO1506" target="_blank" >LO1506: Sustainability support of the centre NTIS - New Technologies for the Information Society</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Surface and Coatings Technology
ISSN
0257-8972
e-ISSN
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Volume of the periodical
399
Issue of the periodical within the volume
15 OCT 2020
Country of publishing house
CH - SWITZERLAND
Number of pages
10
Pages from-to
„126139-1“-„129139-10“
UT code for WoS article
000563807700030
EID of the result in the Scopus database
2-s2.0-85088498320