Effect of precipitation in the compressive behavior of high strength Mg-Gd-Y-Zn extruded alloy
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10407037" target="_blank" >RIV/00216208:11320/19:10407037 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=tnssc070Gg" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=tnssc070Gg</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.msea.2019.138452" target="_blank" >10.1016/j.msea.2019.138452</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effect of precipitation in the compressive behavior of high strength Mg-Gd-Y-Zn extruded alloy
Popis výsledku v původním jazyce
The influence of beta' and gamma' precipitates on prismatic and basal planes and long-period stacking ordered (LPSO) fibers on the compressive behavior of high strength Mg-Gd-Y-Zn alloy was investigated using the combination of in-situ synchrotron radiation diffraction and acoustic emission, as well as transmission electron microscopy. After extrusion, the microstructure is characterized by highly oriented LPSO fibers elongated along the extrusion direction within the magnesium matrix. The microstructure of the magnesium matrix consists of a mixture of randomly oriented DRX-ed and coarse, textured non-DRXed grains (DRXed means Dynamically Recrystallised). Alloying elements in solid solution in the as-extruded condition precipitate during heat treatment at 200 degrees C. The formation of beta' prismatic plates and gamma' basal lamellar precipitates increases the compressive yield stress from 310 to 409 MPa. The onset of macroscopic plastic deformation in as-extruded and peak aged conditions is controlled by the activation of extension twinning in non-DRXed grains. In the peak aged alloy, prismatic plates and basal lamellae interact with twins during the propagation and growth stages of these. beta' precipitates are more efficient than gamma' basal lamellae not only in hindering extension twinning but also in the hardening of the basal system. During twin growth, the internal stress in the beta' precipitates continuously increases due to stress misfit generated when precipitates are engulfed by twins.
Název v anglickém jazyce
Effect of precipitation in the compressive behavior of high strength Mg-Gd-Y-Zn extruded alloy
Popis výsledku anglicky
The influence of beta' and gamma' precipitates on prismatic and basal planes and long-period stacking ordered (LPSO) fibers on the compressive behavior of high strength Mg-Gd-Y-Zn alloy was investigated using the combination of in-situ synchrotron radiation diffraction and acoustic emission, as well as transmission electron microscopy. After extrusion, the microstructure is characterized by highly oriented LPSO fibers elongated along the extrusion direction within the magnesium matrix. The microstructure of the magnesium matrix consists of a mixture of randomly oriented DRX-ed and coarse, textured non-DRXed grains (DRXed means Dynamically Recrystallised). Alloying elements in solid solution in the as-extruded condition precipitate during heat treatment at 200 degrees C. The formation of beta' prismatic plates and gamma' basal lamellar precipitates increases the compressive yield stress from 310 to 409 MPa. The onset of macroscopic plastic deformation in as-extruded and peak aged conditions is controlled by the activation of extension twinning in non-DRXed grains. In the peak aged alloy, prismatic plates and basal lamellae interact with twins during the propagation and growth stages of these. beta' precipitates are more efficient than gamma' basal lamellae not only in hindering extension twinning but also in the hardening of the basal system. During twin growth, the internal stress in the beta' precipitates continuously increases due to stress misfit generated when precipitates are engulfed by twins.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA18-07140S" target="_blank" >GA18-07140S: Víceúrovňová analýza interakcí dvojčat s mikrostrukturou v HCP kovech a slitinách</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ISSN
0921-5093
e-ISSN
—
Svazek periodika
768
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
12
Strana od-do
138452
Kód UT WoS článku
000496607100009
EID výsledku v databázi Scopus
2-s2.0-85072859864