Influence of temperature of ECAP processing on the microstructure and microhardness of as-cast AX41 alloy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10405689" target="_blank" >RIV/00216208:11320/20:10405689 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=jOfocQ4WGd" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=jOfocQ4WGd</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10853-019-04171-7" target="_blank" >10.1007/s10853-019-04171-7</a>

Result language
angličtina
Original language name
Influence of temperature of ECAP processing on the microstructure and microhardness of as-cast AX41 alloy
Original language description
The influence of the temperature of ECAP processing on the microstructure and mechanical properties of commercial as-cast AX41 magnesium was investigated. ECAP processing was conducted at temperatures of 220 degrees C and 250 degrees C up to N = 8 passes via route Bc. The original grain size of 200 mu m was found to decrease with increasing number of passes at both temperatures. After 8 passes, the grain size of 1.4 mu m and 2.6 mu m was obtained at 220 degrees C and 250 degrees C, respectively. This difference was attributed to the suppressed dynamic recrystallization for N > 2 caused by substantial decrease in dislocation density of 101 over bar 0112 over bar 0 pyramidal <a>-type edge dislocations and more pronounced high-temperature grain growth at 250 degrees C. Despite the different grain sizes, similar crystallographic textures and dislocation densities were observed at both temperatures after 8 passes. The microhardness values increased up to 4 passes at both temperatures in accordance with the variation of the grain size, indicating the dominance of Hall-Petch strengthening.
Czech name
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Czech description
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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.)

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)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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