AE42 magnesium alloy prepared by spark plasma sintering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10389496" target="_blank" >RIV/00216208:11320/18:10389496 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/18:00498239

Výsledek na webu

<a href="https://doi.org/10.1016/j.jallcom.2018.01.115" target="_blank" >https://doi.org/10.1016/j.jallcom.2018.01.115</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2018.01.115" target="_blank" >10.1016/j.jallcom.2018.01.115</a>

Jazyk výsledku

angličtina

Název v původním jazyce

AE42 magnesium alloy prepared by spark plasma sintering

Popis výsledku v původním jazyce

Rare-earth containing magnesium alloy AE42 was prepared by powder metallurgy technique of spark plasma sintering for the first time. The effect of sintering parameters on the microstructure, precipitation of secondary particles and mechanical properties was investigated. The gas-atomized AE42 alloy powder was sintered at three different temperatures of 450 degrees C, 500 degrees C and 550 degrees C for three minutes, which was sufficient to achieve almost full density. Despite the negligible effect of the sintering temperature on the grain size, sintering had a pronounced effect on the Al11RE3 secondary phase particles. Fine eutectic lamellar structure of Al11RE3 in gas-atomized powder transformed to almost globular particles during SPS and size of these secondary phase particles increased with increasing sintering temperature. As the result, SPS temperature had significant effect on the mechanical strength of the material via altering the size and morphology of Al11RE3 particles. Sintered material was compared with the gas-atomized powder subsequently annealed at 550 degrees C. It was found that the kinetics of the globularization of the Al11RE3 secondary phase particles is much faster during spark plasma sintering than during conventional annealing at the same temperature. This can be associated with increased diffusivity along the matrix/precipitate interface or possibly with locally increased temperature due to electron transport.

Název v anglickém jazyce

AE42 magnesium alloy prepared by spark plasma sintering

Popis výsledku anglicky

Rare-earth containing magnesium alloy AE42 was prepared by powder metallurgy technique of spark plasma sintering for the first time. The effect of sintering parameters on the microstructure, precipitation of secondary particles and mechanical properties was investigated. The gas-atomized AE42 alloy powder was sintered at three different temperatures of 450 degrees C, 500 degrees C and 550 degrees C for three minutes, which was sufficient to achieve almost full density. Despite the negligible effect of the sintering temperature on the grain size, sintering had a pronounced effect on the Al11RE3 secondary phase particles. Fine eutectic lamellar structure of Al11RE3 in gas-atomized powder transformed to almost globular particles during SPS and size of these secondary phase particles increased with increasing sintering temperature. As the result, SPS temperature had significant effect on the mechanical strength of the material via altering the size and morphology of Al11RE3 particles. Sintered material was compared with the gas-atomized powder subsequently annealed at 550 degrees C. It was found that the kinetics of the globularization of the Al11RE3 secondary phase particles is much faster during spark plasma sintering than during conventional annealing at the same temperature. This can be associated with increased diffusivity along the matrix/precipitate interface or possibly with locally increased temperature due to electron transport.

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/GA15-15609S" target="_blank" >GA15-15609S: Ultra-jemnozrnné a nanokrystalické kovové materiály s vysokou pevností připravené slinovaním pulzním elektrickým proudem</a><br>

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

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

742

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

172-179

Kód UT WoS článku

000427505800023

EID výsledku v databázi Scopus

2-s2.0-85041663000