Early Stages of Precipitation in Mould-Cast, Cold-Rolled and Heat-Treated Aluminium Alloy AA7075 with Sc,Zr-Addition
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10420382" target="_blank" >RIV/00216208:11320/20:10420382 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=YEfFCnqET0" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=YEfFCnqET0</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.12693/APhysPolA.137.250" target="_blank" >10.12693/APhysPolA.137.250</a>
Alternative languages
Result language
angličtina
Original language name
Early Stages of Precipitation in Mould-Cast, Cold-Rolled and Heat-Treated Aluminium Alloy AA7075 with Sc,Zr-Addition
Original language description
Precipitation reactions of the commercial Al-Zn-Mg-Cu(-Sc-Zr) alloy in mould-cast, cold-rolled, and heat-treated states were characterized by electron microscopy, X-ray diffraction, thermal analysis, microhardness testing, and positron annihilation spectroscopy. The distinct changes in microhardness curves as well as in a heat flow of the alloys studied are mainly caused by dissolution of clusters and precipitation of particles from the Al-Zn-Mg-Cu system. An easier diffusion of Zn, Mg, and Cu atoms along dislocations is responsible for the precipitation of Zn,Mg,Cu-containing particles at lower temperatures compared to the mould-cast alloys The mould-cast and cold-rolled alloys contain solute clusters rich in Mg and Zn. Clusters formed in the heat-treated alloys during natural ageing have similar composition but in addition to Mg and Zn contain also Cu. The Cu-concentration increases with increase of period of natural ageing. The mould-cast state after natural ageing contain in addition to solute agglomerates also vacancy clusters formed by agglomeration of thermal vacancies. Addition of Sc and Zr results in a higher hardness above approximate to 270 degrees C due to a strengthening by Al-3(Sc,Zr) particles with a good thermal stability. Sc and Zr have probably no influence on the evolution of solute clusters.
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
ACTA PHYSICA POLONICA A [online]
ISSN
1898-794X
e-ISSN
—
Volume of the periodical
137
Issue of the periodical within the volume
2
Country of publishing house
PL - POLAND
Number of pages
5
Pages from-to
250-254
UT code for WoS article
000529332100041
EID of the result in the Scopus database
2-s2.0-85083814051