Accumulative roll-bonding of aluminium sheets at room and cryogenic temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F21%3AN0000023" target="_blank" >RIV/26316919:_____/21:N0000023 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10437851 RIV/68407700:21340/21:00352510

Výsledek na webu

<a href="http://www.kovmat.sav.sk/article.php?rr=59&cc=4&ss=209" target="_blank" >http://www.kovmat.sav.sk/article.php?rr=59&cc=4&ss=209</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4149/km_2021_4_209" target="_blank" >10.4149/km_2021_4_209</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Accumulative roll-bonding of aluminium sheets at room and cryogenic temperatures

Popis výsledku v původním jazyce

2 mm thick pure aluminium sheets (99.99 % Al) were processed by accumulative rollbonding (ARB) at room temperature (RT) and under cryogenic conditions (CC, -196 degrees C). Their microstructure was characterized by means of electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM), mechanical properties were examined by hardness measurements. Nearly equiaxed subgrains with a relatively high dislocation density in their interior were observed after the 1st ARB cycle. The following cycles result in subgrain flattening and reduction of inner dislocation density by recovery. The distribution of misorientations of the grain boundaries in CC and RT samples does not differ significantly; only the CC sample has a little higher fraction of the low-angle grain boundaries (LAGB) with misorientation 2 degrees -5 degrees at the expense of LAGB (5 degrees -15 degrees). The hardness increases vitally only during the first ARB cycle at RT; a slight decrease is even observed starting from the 2nd ARB cycle. During processing at CC, this decrease is shifted to the 4th cycle due to reduced post-dynamic recovery at low temperatures.

Název v anglickém jazyce

Accumulative roll-bonding of aluminium sheets at room and cryogenic temperatures

Popis výsledku anglicky

2 mm thick pure aluminium sheets (99.99 % Al) were processed by accumulative rollbonding (ARB) at room temperature (RT) and under cryogenic conditions (CC, -196 degrees C). Their microstructure was characterized by means of electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM), mechanical properties were examined by hardness measurements. Nearly equiaxed subgrains with a relatively high dislocation density in their interior were observed after the 1st ARB cycle. The following cycles result in subgrain flattening and reduction of inner dislocation density by recovery. The distribution of misorientations of the grain boundaries in CC and RT samples does not differ significantly; only the CC sample has a little higher fraction of the low-angle grain boundaries (LAGB) with misorientation 2 degrees -5 degrees at the expense of LAGB (5 degrees -15 degrees). The hardness increases vitally only during the first ARB cycle at RT; a slight decrease is even observed starting from the 2nd ARB cycle. During processing at CC, this decrease is shifted to the 4th cycle due to reduced post-dynamic recovery at low temperatures.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF15_003%2F0000485" target="_blank" >EF15_003/0000485: Centrum nanomateriálů pro pokročilé aplikace</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

KOVOVE MATERIALY-METALLIC MATERIALS

ISSN

0023-432X

e-ISSN

1338-4252

Svazek periodika

59

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

209-215

Kód UT WoS článku

000703518600001

EID výsledku v databázi Scopus

2-s2.0-85115761884