Effect of Sc addition on downstream processing of twin-roll cast Al-Cu-Li-Mg-Zr-based alloys

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10484684" target="_blank" >RIV/00216208:11320/24:10484684 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=55nmWYMOMn" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=55nmWYMOMn</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/S1003-6326(24)66505-2" target="_blank" >10.1016/S1003-6326(24)66505-2</a>

Result language

angličtina

Original language name

Effect of Sc addition on downstream processing of twin-roll cast Al-Cu-Li-Mg-Zr-based alloys

Original language description

A processing scheme for preparing strips of Al-Cu-Li-Mg-Zr-based alloys microalloyed with Sc was proposed. This scheme includes a twin-roll casting of strips with a near-net-shaped 3 mm-thick gauge and a homogenization/solution treatment processing step. Two twin-roll cast Al-Cu-Li-Mg-Zr-based alloys were studied, one with an addition of 0.17 wt.% Sc, and the other without addition of Sc. Both alloys were annealed at 300 degrees C for 30 min, 450 degrees C for 30 min, and 530 degrees C for 30 min and quenched into room temperature water. The first two annealing steps provide a fine dispersion of Al3Zr/Al3(Sc,Zr) particles. The final annealing step serves as homogenization/solution treatment. A fine crystallization structure of the twin-roll cast materials enables the dissolution of primary particles containing the main alloying elements during a relatively short annealing time. Shorter soaking duration limits the depletion of surface layers from Li and significant coarsening of Al3Zr/Al3(Sc,Zr) dispersoids. The Sc-containing material has significantly finer grains already in the as-cast state. The Al3(Sc,Zr) dispersoids formed during the homogenization/solution treatment step prevent grain coarsening at high temperatures. Strengthening theta &apos;(Al2Cu), T1(Al2CuLi), and rare S&apos;(Al2CuMg) phases are formed during subsequent artificial aging at 180 degrees C. The increase in yield strength was 200 MPa in the peak-aged conditions. This value is comparable to the ones reported in similar direct-chill cast materials, thus validating the proposed processing scheme.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GA20-19170S" target="_blank" >GA20-19170S: Microstructure and mechanical properties of twin-roll cast Al-Li-Mg-Cu-Sc-Zr strips</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Transactions of Nonferrous Metals Society of China (English Edition)

ISSN

1003-6326

e-ISSN

2210-3384

Volume of the periodical

34

Issue of the periodical within the volume

6

Country of publishing house

CN - CHINA

Number of pages

15

Pages from-to

1759-1773

UT code for WoS article

001275281000001

EID of the result in the Scopus database

2-s2.0-85184679507