Microstructure and corrosion resistance of a duplex structured Mg–7.5Li–3Al–1Zn

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F20%3A43920879" target="_blank" >RIV/60461373:22310/20:43920879 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/21:43922964

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2213956720301535" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2213956720301535</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jma.2020.07.007" target="_blank" >10.1016/j.jma.2020.07.007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Microstructure and corrosion resistance of a duplex structured Mg–7.5Li–3Al–1Zn

Popis výsledku v původním jazyce

This study describes the corrosion resistance of extruded, and extruded with post-processing annealing, Mg–7.5Li–3Al–1Zn alloys. The results demonstrate that extrusion at 350 °C with an extrusion speed 0.5 s−1 does not lead to the full recrystallization of the alloy, and the material still exhibits a dendritic microstructure. The post-processing annealing triggers the microstructure transformation, and the relative composition of the alloy changes. The ratio of β(Li) to α(Mg) in the extruded alloy was 29–71%; after annealing amount of β(Li) increased, and the ratio of β(Li) to α(Mg) in the annealed alloy was 35–65%. Corrosion testing shows that in 3.5 wt% NaCl the extruded alloys immediately undergo strong dissolution. As a result of the subsequent annealing, an improvement of corrosion resistance is observed. The higher amount of β(Li) in the annealed alloy reduces the area ratio of cathodic to anodic sites of corrosion, and this makes the annealed alloy more resistive under the analyzed conditions. © 2020

Název v anglickém jazyce

Microstructure and corrosion resistance of a duplex structured Mg–7.5Li–3Al–1Zn

Popis výsledku anglicky

This study describes the corrosion resistance of extruded, and extruded with post-processing annealing, Mg–7.5Li–3Al–1Zn alloys. The results demonstrate that extrusion at 350 °C with an extrusion speed 0.5 s−1 does not lead to the full recrystallization of the alloy, and the material still exhibits a dendritic microstructure. The post-processing annealing triggers the microstructure transformation, and the relative composition of the alloy changes. The ratio of β(Li) to α(Mg) in the extruded alloy was 29–71%; after annealing amount of β(Li) increased, and the ratio of β(Li) to α(Mg) in the annealed alloy was 35–65%. Corrosion testing shows that in 3.5 wt% NaCl the extruded alloys immediately undergo strong dissolution. As a result of the subsequent annealing, an improvement of corrosion resistance is observed. The higher amount of β(Li) in the annealed alloy reduces the area ratio of cathodic to anodic sites of corrosion, and this makes the annealed alloy more resistive under the analyzed conditions. © 2020

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Magnesium and Alloys

ISSN

2213-9567

e-ISSN

—

Svazek periodika

neuveden

Číslo periodika v rámci svazku

october

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85092212500