Amplitude Dependent Internal Friction in Strained Magnesium Alloys of AZ Series

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10420706" target="_blank" >RIV/00216208:11320/20:10420706 - isvavai.cz</a>

Výsledek na webu

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

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/cryst10070608" target="_blank" >10.3390/cryst10070608</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Amplitude Dependent Internal Friction in Strained Magnesium Alloys of AZ Series

Popis výsledku v původním jazyce

Amplitude dependent internal friction (ADIF) was measured in three AZ magnesium alloys. Two types of experiments were performed: ADIF was measured step by step with the increasing strain amplitude and ADIF was measured after predeformation of samples in torsion. All experiments were done at room temperature. The quality factor was used as a measure of internal friction (IF). The quality factor decreased in the region of smaller amplitudes, and approaching some critical amplitude, epsilon(cr), rapidly increased. This critical amplitude increased with increasing maximum strain amplitude and predeformation of samples up to similar to 6%. Such behavior can be explained by considering mobile solute atoms, which may migrate along the dislocation line in the region of smaller amplitudes and perpendicular to the dislocation line in the region of higher amplitudes. A competition between dragging and depinning of solute atoms with dislocation lines may very well explain the measured dependencies.

Název v anglickém jazyce

Amplitude Dependent Internal Friction in Strained Magnesium Alloys of AZ Series

Popis výsledku anglicky

Amplitude dependent internal friction (ADIF) was measured in three AZ magnesium alloys. Two types of experiments were performed: ADIF was measured step by step with the increasing strain amplitude and ADIF was measured after predeformation of samples in torsion. All experiments were done at room temperature. The quality factor was used as a measure of internal friction (IF). The quality factor decreased in the region of smaller amplitudes, and approaching some critical amplitude, epsilon(cr), rapidly increased. This critical amplitude increased with increasing maximum strain amplitude and predeformation of samples up to similar to 6%. Such behavior can be explained by considering mobile solute atoms, which may migrate along the dislocation line in the region of smaller amplitudes and perpendicular to the dislocation line in the region of higher amplitudes. A competition between dragging and depinning of solute atoms with dislocation lines may very well explain the measured dependencies.

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

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Crystals [online]

ISSN

2073-4352

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

18

Strana od-do

608

Kód UT WoS článku

000558040200001

EID výsledku v databázi Scopus

2-s2.0-85087880296