Thermal stability of the microstructure of rapidly solidified ribbon-consolidated Mg97.94Zn0.56Y1.5 alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10443317" target="_blank" >RIV/00216208:11320/22:10443317 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=W_NaircA97" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=W_NaircA97</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchar.2021.111618" target="_blank" >10.1016/j.matchar.2021.111618</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal stability of the microstructure of rapidly solidified ribbon-consolidated Mg97.94Zn0.56Y1.5 alloy

Popis výsledku v původním jazyce

The present study deals with the thermal stability of the microstructure of the rapidly solidified ribbon-consolidated Mg97.94Zn0.56Y1.5 alloy. In the consolidated state, the material has a very fine-grained microstructure with an average grain size of similar to 790 nm and contains Zn- and Y-rich stacking faults (SFs) in basal planes. SFs are dispersed in an individual manner or organized in the blocks forming a Mille-feuille structure (MFS). The alloy is characterized by a weak basal texture with a more pronounced intensity at the (10 (1) over bar0) pole. In order to study the thermal stability of the microstructure, isothermal annealing in a temperature range of 300-500 degrees C was applied. The microstructure is thermally stable up to 400 degrees C, which is exceptionally high compared to conventional ultra-fine grained magnesium alloys. At higher temperatures, the growth of the grain size and redistribution of the texture intensity is related to the recrystallization process. The order of dispersion of the solute-segregated SFs is independent of the annealing temperatures. However, there is a change in the arrangement of SFs in the grains: the thickness of the SFs blocks increases with increasing temperature, i.e., the stacking faults became more agglomerated. Nevertheless, even after annealing at 500 degrees C, there is still a mixture of several polytypes of the long-period stacking ordered (LPSO) phase rather than a single-ordered LPSO phase.

Název v anglickém jazyce

Thermal stability of the microstructure of rapidly solidified ribbon-consolidated Mg97.94Zn0.56Y1.5 alloy

Popis výsledku anglicky

The present study deals with the thermal stability of the microstructure of the rapidly solidified ribbon-consolidated Mg97.94Zn0.56Y1.5 alloy. In the consolidated state, the material has a very fine-grained microstructure with an average grain size of similar to 790 nm and contains Zn- and Y-rich stacking faults (SFs) in basal planes. SFs are dispersed in an individual manner or organized in the blocks forming a Mille-feuille structure (MFS). The alloy is characterized by a weak basal texture with a more pronounced intensity at the (10 (1) over bar0) pole. In order to study the thermal stability of the microstructure, isothermal annealing in a temperature range of 300-500 degrees C was applied. The microstructure is thermally stable up to 400 degrees C, which is exceptionally high compared to conventional ultra-fine grained magnesium alloys. At higher temperatures, the growth of the grain size and redistribution of the texture intensity is related to the recrystallization process. The order of dispersion of the solute-segregated SFs is independent of the annealing temperatures. However, there is a change in the arrangement of SFs in the grains: the thickness of the SFs blocks increases with increasing temperature, i.e., the stacking faults became more agglomerated. Nevertheless, even after annealing at 500 degrees C, there is still a mixture of several polytypes of the long-period stacking ordered (LPSO) phase rather than a single-ordered LPSO phase.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GJ20-07384Y" target="_blank" >GJ20-07384Y: Vývoj hořčíkových slitin s vysokou pevností a tažností připravených rychlou solidifikací</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials Characterization

ISSN

1044-5803

e-ISSN

1873-4189

Svazek periodika

183

Číslo periodika v rámci svazku

leden

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

111618

Kód UT WoS článku

000736677500002

EID výsledku v databázi Scopus

2-s2.0-85119932174