Annealing effects in hot-deformed Al-Mn-Sc-Zr alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10316199" target="_blank" >RIV/00216208:11320/15:10316199 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/15:00236936

Výsledek na webu

<a href="http://dx.doi.org/10.4149/km_2015_5_295" target="_blank" >http://dx.doi.org/10.4149/km_2015_5_295</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4149/km_2015_5_295" target="_blank" >10.4149/km_2015_5_295</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Annealing effects in hot-deformed Al-Mn-Sc-Zr alloys

Popis výsledku v původním jazyce

Microstructure, thermal, electrical and mechanical properties of the hot-extruded and hot-rolled AlMnScZr alloys were studied. The electrical resistometry and microhardness together with differential scanning calorimetry measurements were compared with microstructure development observed by transmission electron microscopy, X-ray diffraction, and electron backscatter diffraction. Fine subgrain or grain structure developed and fine coherent AL(3)(Sc,Zr) particles precipitated during hot deformation and subsequent cooling. The distinct resistivity changes are mainly caused by precipitation of Mn-containing particles. The pronounced two-stage development of the AL(6)(Mn,Fe)-phase precipitation was observed. Nevertheless, the precipitation has a negligible effect on microhardness. The presence of the Mn-containing particles with a size of similar to 50 nm inside subgrains or grains and similar to 2 mu m at subgrain or grain boundaries has a significant antirecrystallization effect. The combination of Mn, Sc and Zr additions to Al suppresses recrystallization during isothermal annealing at 550 degrees C. Hot deformation has no effect on the apparent activation energy values of the Al3Sc-phase precipitation (Q = 109 kJ mol(-1)) and Al6Mn-phase precipitation (Q = 156 kJ mol(-1)).

Název v anglickém jazyce

Annealing effects in hot-deformed Al-Mn-Sc-Zr alloys

Popis výsledku anglicky

Microstructure, thermal, electrical and mechanical properties of the hot-extruded and hot-rolled AlMnScZr alloys were studied. The electrical resistometry and microhardness together with differential scanning calorimetry measurements were compared with microstructure development observed by transmission electron microscopy, X-ray diffraction, and electron backscatter diffraction. Fine subgrain or grain structure developed and fine coherent AL(3)(Sc,Zr) particles precipitated during hot deformation and subsequent cooling. The distinct resistivity changes are mainly caused by precipitation of Mn-containing particles. The pronounced two-stage development of the AL(6)(Mn,Fe)-phase precipitation was observed. Nevertheless, the precipitation has a negligible effect on microhardness. The presence of the Mn-containing particles with a size of similar to 50 nm inside subgrains or grains and similar to 2 mu m at subgrain or grain boundaries has a significant antirecrystallization effect. The combination of Mn, Sc and Zr additions to Al suppresses recrystallization during isothermal annealing at 550 degrees C. Hot deformation has no effect on the apparent activation energy values of the Al3Sc-phase precipitation (Q = 109 kJ mol(-1)) and Al6Mn-phase precipitation (Q = 156 kJ mol(-1)).

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Kovové materiály

ISSN

0023-432X

e-ISSN

—

Svazek periodika

53

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

10

Strana od-do

295-304

Kód UT WoS článku

000366344600001

EID výsledku v databázi Scopus

2-s2.0-84947075776