Influence of dislocations on precipitation processes in hot-extruded Al-Mn-Sc-Zr alloy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10388139" target="_blank" >RIV/00216208:11320/18:10388139 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3139/146.111654" target="_blank" >https://doi.org/10.3139/146.111654</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3139/146.111654" target="_blank" >10.3139/146.111654</a>
Alternative languages
Result language
angličtina
Original language name
Influence of dislocations on precipitation processes in hot-extruded Al-Mn-Sc-Zr alloy
Original language description
Solute clustering and precipitation processes in hot-extruded Al-Mn-Sc-Zr alloy were studied. Positron annihilation studies were combined with electrical resistometry, microhardness testing and microstructural characterization. Extrusion introduced dislocations which arranged into a cell structure. Sc solutes segregated at dislocations. Moreover, fine coherent Al-3(Sc,Zr) particles precipitated during extrusion and subsequent cooling. During the isochronal annealing Sc agglomerated forming Sc-rich dispersoids. Agglomeration of Sc solutes is facilitated by pipe diffusion along dislocations. Zr atoms become mobile above 240 degrees C and form shells surrounding Al3Sc particles. This process is not affected by dislocations. The maximum fraction of positrons annihilated by Sc and Zr electrons occurred at 300 degrees C, coinciding with hardening of the alloy. The resistivity changes above 300 degrees C are caused by precipitation of Mn-containing particles.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Materials Research
ISSN
1862-5282
e-ISSN
—
Volume of the periodical
109
Issue of the periodical within the volume
7
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
583-592
UT code for WoS article
000452546000001
EID of the result in the Scopus database
2-s2.0-85052762064