Numerical analysis of twin-precipitate interactions in magnesium alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F21%3A00533803" target="_blank" >RIV/68081723:_____/21:00533803 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389021:_____/21:00533803

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S135964542030851X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S135964542030851X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2020.10.053" target="_blank" >10.1016/j.actamat.2020.10.053</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Numerical analysis of twin-precipitate interactions in magnesium alloys

Popis výsledku v původním jazyce

The present paper performs a two-dimensional numerical study of the interactions between {10n1¯n2} tensile twin and precipitates aligned along basal planes in magnesium alloys. The model consists of an elliptical twin placed in between two rectangular precipitates. Material behavior is modeled using anisotropic elasticity and crystal plasticity. The model represents the situation at the onset of twinning when twins are small and fit in between the precipitates. The results show that precipitates influence the shear stress necessary to accommodate twin by changing the slip critical resolved shear stress (CRSS) values and by acting as obstacles. Thin twins (aspect ratio <0.05) are influenced by both effects while thick twins (aspect ratio >0.1) are influenced by slip CRSS changes. The precipitate thickness plays a crucial role in twin thickening and propagation. Increasing precipitate thickness increases shear stress necessary to accommodate twin and also decreases stress beyond the precipitate which hinders sequential twin propagation.

Název v anglickém jazyce

Numerical analysis of twin-precipitate interactions in magnesium alloys

Popis výsledku anglicky

The present paper performs a two-dimensional numerical study of the interactions between {10n1¯n2} tensile twin and precipitates aligned along basal planes in magnesium alloys. The model consists of an elliptical twin placed in between two rectangular precipitates. Material behavior is modeled using anisotropic elasticity and crystal plasticity. The model represents the situation at the onset of twinning when twins are small and fit in between the precipitates. The results show that precipitates influence the shear stress necessary to accommodate twin by changing the slip critical resolved shear stress (CRSS) values and by acting as obstacles. Thin twins (aspect ratio <0.05) are influenced by both effects while thick twins (aspect ratio >0.1) are influenced by slip CRSS changes. The precipitate thickness plays a crucial role in twin thickening and propagation. Increasing precipitate thickness increases shear stress necessary to accommodate twin and also decreases stress beyond the precipitate which hinders sequential twin propagation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA18-07140S" target="_blank" >GA18-07140S: Víceúrovňová analýza interakcí dvojčat s mikrostrukturou v HCP kovech a slitinách</a><br>

Návaznosti

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

Rok uplatnění

2021

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

1873-2453

Svazek periodika

202

Číslo periodika v rámci svazku

JAN

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

80-87

Kód UT WoS článku

000599842800007

EID výsledku v databázi Scopus

2-s2.0-85094899272