Effect of severe plastic deformation process on microstructure and mechanical properties of AlSi/SiC composite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F22%3A10249058" target="_blank" >RIV/61989100:27360/22:10249058 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27230/22:10249058

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2238785422000230?pes=vor" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2238785422000230?pes=vor</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmrt.2022.01.023" target="_blank" >10.1016/j.jmrt.2022.01.023</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of severe plastic deformation process on microstructure and mechanical properties of AlSi/SiC composite

Popis výsledku v původním jazyce

AlSi11 matrix composites reinforced with SiC particles have been fabricated by high pressure die casting assisted by ultrasonic mixing. Severe plastic deformation process was performed on the as cast AlSi/2wt.%SiC composite using the modified channel with the twisted output (TCAP) at three temperatures of 350, 400 and 450 oC. The TCAP tool consists of helical part in the horizontal area of the channel allowing for simulation of back pressure and thus resulted in the increase of extrusion force and local plastic deformation. The most important issue of the presented investigations was to refine dendritic cast microstructure of the prepared composite during one pass of TCAP. As a result, a composite with a matrix containing equiaxed α(Al) grains of few microns depending on TCAP temperature and β(Si) particles of about 1 μm in size with twinned structure was produced. The dynamic recrystallization process during TCAP at 450 oC manifested by the grain growth of α(Al) and decrease of dislocation density was observed to affect the sample hardness causing its decrease. The mechanical properties of the composite extruded by TCAP were measured by compression testes and the maximum plastic deformation of about 35% and the compressive strength near 300 MPa were observed. These values were similar for all samples extruded at temperatures between 350 and 450 oC and generally are better comparing with AK11 alloy subjected to different plastic deformation processes. (C) 2022 The Authors

Název v anglickém jazyce

Effect of severe plastic deformation process on microstructure and mechanical properties of AlSi/SiC composite

Popis výsledku anglicky

AlSi11 matrix composites reinforced with SiC particles have been fabricated by high pressure die casting assisted by ultrasonic mixing. Severe plastic deformation process was performed on the as cast AlSi/2wt.%SiC composite using the modified channel with the twisted output (TCAP) at three temperatures of 350, 400 and 450 oC. The TCAP tool consists of helical part in the horizontal area of the channel allowing for simulation of back pressure and thus resulted in the increase of extrusion force and local plastic deformation. The most important issue of the presented investigations was to refine dendritic cast microstructure of the prepared composite during one pass of TCAP. As a result, a composite with a matrix containing equiaxed α(Al) grains of few microns depending on TCAP temperature and β(Si) particles of about 1 μm in size with twinned structure was produced. The dynamic recrystallization process during TCAP at 450 oC manifested by the grain growth of α(Al) and decrease of dislocation density was observed to affect the sample hardness causing its decrease. The mechanical properties of the composite extruded by TCAP were measured by compression testes and the maximum plastic deformation of about 35% and the compressive strength near 300 MPa were observed. These values were similar for all samples extruded at temperatures between 350 and 450 oC and generally are better comparing with AK11 alloy subjected to different plastic deformation processes. (C) 2022 The Authors

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20300 - Mechanical engineering

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Research and Technology

ISSN

2238-7854

e-ISSN

—

Svazek periodika

17

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

948-960

Kód UT WoS článku

000782649700004

EID výsledku v databázi Scopus

2-s2.0-85123624921