Annealing Effects in Cast Commercial Aluminium Al-Mg-Zn-Cu(-Sc-Zr) Alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10439030" target="_blank" >RIV/00216208:11320/21:10439030 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/21:00335116 RIV/61389021:_____/21:00519299

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=VWwK7wyGE7" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=VWwK7wyGE7</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12540-019-00499-6" target="_blank" >10.1007/s12540-019-00499-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Annealing Effects in Cast Commercial Aluminium Al-Mg-Zn-Cu(-Sc-Zr) Alloys

Popis výsledku v původním jazyce

Precipitation reactions of the cast Al-3.4 at%Mg-2.7 at%Zn-0.80 at%Cu-0.10 at%Fe-0.05 at%Si alloy with and without addition of 0.14 at%Sc and 0.06 at%Zr were characterized by electrical resistometry, electron microscopy, X-ray diffraction, thermal analysis, microhardness testing, and positron annihilation. The AlMgZnCuScZr alloy contains a grain boundary T-phase (Mg-32(Al,Cu,Zn)(49)) with a cubic and/or quasicrystalline structure. The AlMgZnCu alloy contains a mixture of MgZn2- and the T-phase. Primary multilayer Al-3(Sc,Zr) particles precipitated during casting and subsequent cooling. The particles have a layered Al-3(Sc,Zr) + alpha-Al + Al-3(Sc,Zr) structure, i.e. consist of regions enriched with both Sc and Zr. Small atomic Mg,Zn(,Cu)-rich clusters coherent with the matrix were formed during the cooling of both alloys and/or in the course of their storage at ambient temperature. Their dissolution enables precipitation of the transient eta &apos;- and/or stable eta-phases of the AlZnMgCu system in both investigated alloys. The effective activation energy for the dissolution of the clusters was calculated as similar to 103 kJ/mol. Annealing of the AlMgZnCuScZr alloy above 300 degrees C leads to a formation of the secondary Al-3(Sc,Zr) particles which cause precipitation hardening and guarantee thermal stability of mechanical properties. Addition of Sc and Zr micro alloying elements resulted in a substantial grain refinement. The grain size remains unchanged up to isochronal annealing at 390 degrees C.

Název v anglickém jazyce

Annealing Effects in Cast Commercial Aluminium Al-Mg-Zn-Cu(-Sc-Zr) Alloys

Popis výsledku anglicky

Precipitation reactions of the cast Al-3.4 at%Mg-2.7 at%Zn-0.80 at%Cu-0.10 at%Fe-0.05 at%Si alloy with and without addition of 0.14 at%Sc and 0.06 at%Zr were characterized by electrical resistometry, electron microscopy, X-ray diffraction, thermal analysis, microhardness testing, and positron annihilation. The AlMgZnCuScZr alloy contains a grain boundary T-phase (Mg-32(Al,Cu,Zn)(49)) with a cubic and/or quasicrystalline structure. The AlMgZnCu alloy contains a mixture of MgZn2- and the T-phase. Primary multilayer Al-3(Sc,Zr) particles precipitated during casting and subsequent cooling. The particles have a layered Al-3(Sc,Zr) + alpha-Al + Al-3(Sc,Zr) structure, i.e. consist of regions enriched with both Sc and Zr. Small atomic Mg,Zn(,Cu)-rich clusters coherent with the matrix were formed during the cooling of both alloys and/or in the course of their storage at ambient temperature. Their dissolution enables precipitation of the transient eta &apos;- and/or stable eta-phases of the AlZnMgCu system in both investigated alloys. The effective activation energy for the dissolution of the clusters was calculated as similar to 103 kJ/mol. Annealing of the AlMgZnCuScZr alloy above 300 degrees C leads to a formation of the secondary Al-3(Sc,Zr) particles which cause precipitation hardening and guarantee thermal stability of mechanical properties. Addition of Sc and Zr micro alloying elements resulted in a substantial grain refinement. The grain size remains unchanged up to isochronal annealing at 390 degrees C.

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

2021

Kód důvěrnosti údajů

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

Název periodika

Metals and Materials International

ISSN

1598-9623

e-ISSN

—

Svazek periodika

27

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

KR - Korejská republika

Počet stran výsledku

10

Strana od-do

995-1004

Kód UT WoS článku

000491937400001

EID výsledku v databázi Scopus

2-s2.0-85074261087