Influence of heat treatment on corrosion resistance of Mg-Al-Zn alloy processed by severe plastic deformation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10388990" target="_blank" >RIV/00216208:11320/18:10388990 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1515/eng-2018-0044" target="_blank" >https://doi.org/10.1515/eng-2018-0044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/eng-2018-0044" target="_blank" >10.1515/eng-2018-0044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of heat treatment on corrosion resistance of Mg-Al-Zn alloy processed by severe plastic deformation

Popis výsledku v původním jazyce

The effect of subsequent annealing on the electrochemical properties of an AZ31 magnesium alloy processed by extrusion and equal channel angular pressing (ECAP) was investigated. The electrochemical properties were evaluated using potentiodynamic tests in corrosion solution of 0.1 M sodium chloride. The electrochemical changes after annealing were correlated with microstructure evolution. The microstructure was analyzed by scanning electron microscope (SEM) and electron backscatter diffraction (EBSD). The evolution of dislocation density was determined by positron annihilation spectroscopy (PAS). The annealing for 1h at temperatures ranging from 150 degrees C to 250 degrees C resulted in higher polarization resistance in all cases. The polarization resistance of sample annealed at 250 degrees C was similar to 17% higher compared to just ECAPed material. Combination of gradual decrease of dislocation density, grain growth and second phase particles dissolution played the crucial role in the corrosion resistance improvement.

Název v anglickém jazyce

Influence of heat treatment on corrosion resistance of Mg-Al-Zn alloy processed by severe plastic deformation

Popis výsledku anglicky

The effect of subsequent annealing on the electrochemical properties of an AZ31 magnesium alloy processed by extrusion and equal channel angular pressing (ECAP) was investigated. The electrochemical properties were evaluated using potentiodynamic tests in corrosion solution of 0.1 M sodium chloride. The electrochemical changes after annealing were correlated with microstructure evolution. The microstructure was analyzed by scanning electron microscope (SEM) and electron backscatter diffraction (EBSD). The evolution of dislocation density was determined by positron annihilation spectroscopy (PAS). The annealing for 1h at temperatures ranging from 150 degrees C to 250 degrees C resulted in higher polarization resistance in all cases. The polarization resistance of sample annealed at 250 degrees C was similar to 17% higher compared to just ECAPed material. Combination of gradual decrease of dislocation density, grain growth and second phase particles dissolution played the crucial role in the corrosion resistance improvement.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Open Engineering [online]

ISSN

2391-5439

e-ISSN

—

Svazek periodika

8

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

4

Strana od-do

—

Kód UT WoS článku

000449430900001

EID výsledku v databázi Scopus

2-s2.0-85056524607