Heat treatment and age hardening of Al-Si-Mg-Mn commercial alloy with addition of Sc and Zr
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10368372" target="_blank" >RIV/00216208:11320/17:10368372 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1016/j.matchar.2017.04.017" target="_blank" >http://dx.doi.org/10.1016/j.matchar.2017.04.017</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchar.2017.04.017" target="_blank" >10.1016/j.matchar.2017.04.017</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Heat treatment and age hardening of Al-Si-Mg-Mn commercial alloy with addition of Sc and Zr
Popis výsledku v původním jazyce
Microstructure and precipitation processes in an Al-Si-Mg-Mn-Sc-Zr alloy were studied. The as-cast alloy contains fine Al-3(Sc,Zr) particles with L1(2) structure, rods and/or needles of the Mn,Fe-containing phase and Si,Mg co-clusters. These co-clusters have a detrimental effect on precipitation hardening which is caused exclusively by fine needle-shaped beta" phase particles. The pronounced precipitation of the Al-6(Mn,Fe)-phase was observed during isochronal annealing in the as-cast alloy. Nevertheless, the precipitation has a negligible effect on hardness. The apparent activation energy for the Al-6(Mn,Fe)-phase precipitation was calculated as (170 +/- 20) kJ.mol(-1). Heat treatment at 530 degrees C for 45 min dissolves Si,Mg co-clusters but causes a precipitation of the Al-12(Mn,Fe)(3)Si phase particles while the Al-3(Sc,Zr) particles remain unaffected. The Sc and Zr addition to the Al-Si-Mg-Mn alloy influences precipitation hardening in the course of isochronal annealing neither in the as-cast nor in the solution-treated alloy. The age hardening is very poor in the as-cast alloy (similar to 4%) and it is more pronounced in the solution-treated alloy (similar to 60%) due to more convenient size, aspect ratio and number density of the beta" and beta' phases. The apparent activation energy values of precipitation of the transient beta" and beta' phase were determined as similar to 90 kJ.mol(-1) and similar to 130 kJ.mol(-1), respectively.
Název v anglickém jazyce
Heat treatment and age hardening of Al-Si-Mg-Mn commercial alloy with addition of Sc and Zr
Popis výsledku anglicky
Microstructure and precipitation processes in an Al-Si-Mg-Mn-Sc-Zr alloy were studied. The as-cast alloy contains fine Al-3(Sc,Zr) particles with L1(2) structure, rods and/or needles of the Mn,Fe-containing phase and Si,Mg co-clusters. These co-clusters have a detrimental effect on precipitation hardening which is caused exclusively by fine needle-shaped beta" phase particles. The pronounced precipitation of the Al-6(Mn,Fe)-phase was observed during isochronal annealing in the as-cast alloy. Nevertheless, the precipitation has a negligible effect on hardness. The apparent activation energy for the Al-6(Mn,Fe)-phase precipitation was calculated as (170 +/- 20) kJ.mol(-1). Heat treatment at 530 degrees C for 45 min dissolves Si,Mg co-clusters but causes a precipitation of the Al-12(Mn,Fe)(3)Si phase particles while the Al-3(Sc,Zr) particles remain unaffected. The Sc and Zr addition to the Al-Si-Mg-Mn alloy influences precipitation hardening in the course of isochronal annealing neither in the as-cast nor in the solution-treated alloy. The age hardening is very poor in the as-cast alloy (similar to 4%) and it is more pronounced in the solution-treated alloy (similar to 60%) due to more convenient size, aspect ratio and number density of the beta" and beta' phases. The apparent activation energy values of precipitation of the transient beta" and beta' phase were determined as similar to 90 kJ.mol(-1) and similar to 130 kJ.mol(-1), respectively.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
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)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Materials Characterization
ISSN
1044-5803
e-ISSN
—
Svazek periodika
129
Číslo periodika v rámci svazku
July
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
8
Strana od-do
1-8
Kód UT WoS článku
000403624300001
EID výsledku v databázi Scopus
—