Effect of precipitation in the compressive behavior of high strength Mg-Gd-Y-Zn extruded alloy
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Effect of precipitation in the compressive behavior of high strength Mg-Gd-Y-Zn extruded alloy
Original language description
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.
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/GA18-07140S" target="_blank" >GA18-07140S: Multiscale analysis of twin-microstructure interactions in HCP metals and alloys</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
ISSN
0921-5093
e-ISSN
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Volume of the periodical
768
Issue of the periodical within the volume
1
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
138452
UT code for WoS article
000496607100009
EID of the result in the Scopus database
2-s2.0-85072859864