Influence of quasicrystal I-phase on twinning of extruded Mg-Zn-Y alloys under compression

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10388666" target="_blank" >RIV/00216208:11320/18:10388666 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.actamat.2018.03.060" target="_blank" >https://doi.org/10.1016/j.actamat.2018.03.060</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2018.03.060" target="_blank" >10.1016/j.actamat.2018.03.060</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of quasicrystal I-phase on twinning of extruded Mg-Zn-Y alloys under compression

Popis výsledku v původním jazyce

The interaction of the I-phase with twins during compression has been studied in a Mg-6Zn-1Y (wt.%) alloy using the combination of Synchrotron Radiation Diffraction and Acoustic Emission experiments during compression tests. The I-phase occurs as coarse particles at grain boundaries and nanosized precipitates within magnesium grains. Their interaction with twins depends on their shape and size. The presence of coarse I-phase particles with higher Young Modulus requires an additional stress for the activation of twinning since they induce tensile residual stresses in the magnesium matrix. Besides twinning, the basal and non-basal slip systems are also activated. Non-basal slip is observed after macroscopic yield stress within twins. The fine I-phase precipitates within grains interacts with the dislocations and the twins. In the latter case a back-stress arises, which acts against the compressive applied stress. This back stress hinders the twin growth more than the effect of the coarse particles.

Název v anglickém jazyce

Influence of quasicrystal I-phase on twinning of extruded Mg-Zn-Y alloys under compression

Popis výsledku anglicky

The interaction of the I-phase with twins during compression has been studied in a Mg-6Zn-1Y (wt.%) alloy using the combination of Synchrotron Radiation Diffraction and Acoustic Emission experiments during compression tests. The I-phase occurs as coarse particles at grain boundaries and nanosized precipitates within magnesium grains. Their interaction with twins depends on their shape and size. The presence of coarse I-phase particles with higher Young Modulus requires an additional stress for the activation of twinning since they induce tensile residual stresses in the magnesium matrix. Besides twinning, the basal and non-basal slip systems are also activated. Non-basal slip is observed after macroscopic yield stress within twins. The fine I-phase precipitates within grains interacts with the dislocations and the twins. In the latter case a back-stress arises, which acts against the compressive applied stress. This back stress hinders the twin growth more than the effect of the coarse particles.

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

<a href="/cs/project/GA16-12075S" target="_blank" >GA16-12075S: Optimalizace mechanických vlastností pokročilých hořčíkových slitin s vysokou pevností</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Svazek periodika

151

Číslo periodika v rámci svazku

151

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

271-281

Kód UT WoS článku

000432760300025

EID výsledku v databázi Scopus

2-s2.0-85045453727