Phase transformations in novel hot-deformed Al-Zn-Mg-Cu-Si-Mn-Fe (-Sc-Zr) alloys
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10422446" target="_blank" >RIV/00216208:11320/20:10422446 - isvavai.cz</a>
Alternative codes found
RIV/00216275:25310/20:39916167
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dB8fFkSqpF" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=dB8fFkSqpF</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matdes.2020.108821" target="_blank" >10.1016/j.matdes.2020.108821</a>
Alternative languages
Result language
angličtina
Original language name
Phase transformations in novel hot-deformed Al-Zn-Mg-Cu-Si-Mn-Fe (-Sc-Zr) alloys
Original language description
Precipitation stages in the hot-deformed Al-5.28wt.%Zn-3.21wt.%Mg-1.48wt.%Cu-0.24wt.%Si-0.24wt.%Mn-0.14wt.%Fe(-0.23wt.%Sc-0.19wt.%Zr) alloys were investigated. Positron annihilation spectroscopy was employed for a study of vacancy assisted clustering of solutes on the atomic scale, type and concentration of open volume misfit defects and local chemical surroundings of defects. Microhardness testing, thermal analysis and microstructure observations were also used. The alloys contain the eutectic grain boundary phases: T-phase and alpha-Al (Mn,Fe,Si) phase. Positrons are trapped at Zn,Mg-containing Guinier-Preston (GP) zones with no open volume defects and at (precursors of) the T '-phase particles. Above similar to 150 degrees C precipitation of non-eutectic T-phase and coarsening of the S-phase particles are observed. Precipitate-matrix interfaces are characterized by vacancy like misfit defects decorated by Si solutes. Binding energies of vacancies to various solutes (Si, Zn, Cu, Mn, Sc and Zr) obtained by ab-initio calculations were computed. Si solutes exhibit the highest vacancy binding energy among the constituents of the studied alloys. Other solutes (especially Mg, Sc, Zr) repel vacancies. The alloy with Sc,Zr-addition contains incoherent primary Al-3(Sc,Zr)-phase. Layered primary particles with different morphological features such as square and polygonal shapes contain Sc,Zr-rich layers.
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/GA17-17139S" target="_blank" >GA17-17139S: Direct and indirect influence of Sc and Zr on early precipitation stages in advanced lightweight structural Al alloys</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
Materials and Design
ISSN
0264-1275
e-ISSN
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Volume of the periodical
193
Issue of the periodical within the volume
193
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
11
Pages from-to
108821
UT code for WoS article
000568760100002
EID of the result in the Scopus database
2-s2.0-85085842234