Enhancing the mechanical and tribological properties of Mg2Si-rich aluminum alloys by multi-pass friction stir processing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10420088" target="_blank" >RIV/00216208:11320/20:10420088 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Kyd6z0adFw" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Kyd6z0adFw</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchemphys.2020.123066" target="_blank" >10.1016/j.matchemphys.2020.123066</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhancing the mechanical and tribological properties of Mg2Si-rich aluminum alloys by multi-pass friction stir processing

Popis výsledku v původním jazyce

Particle strengthening of in-situ Al-Mg2Si composites hinges on effective geometrical parameters (size, distribution, morphology, and volume fraction) of the inherent primary Mg2Si particles. The use of solid-state friction stir processing (FSP) in a multi-pass mode is recognized as a secondary processing route capable of achieving desirable geometrical parameters of Mg2Si particles in Al-Mg2Si composites as compared to other routes. This paper thus studies the microstructure, mechanical properties, and tribological behavior of the multi-pass FSPed in-situ Al-25Mg(2)Si composite with a threaded triangular pin tool. The FSP was conducted at constant tool rotational and traverse speeds of 1000 rpm and 80 mm/min for 1-6 passes. The results showed a decline in the average Mg2Si size (115-3.25 mu m), porosity content (5.8-0.14%), and primary Mg2Si particle-depleted region as the FSP passes are increased (0-6). Improved geometrical parameters of the primary Mg2Si particles enhance microhardness (178-272 HV), tensile strength (102-233 MPa) and wear resistance of the Al-25%Mg2Si composite via particle dispersion and dislocation strengthening effects, grain refinement, and microstructural densification. Multi-pass FSP can be adopted as a better substitute to element addition, casting modification, heat treatment and electromagnetic stirring in effectively controlling the geometrical parameters of the primary Mg2Si in in-situ Al-Mg2Si composites for improved mechanical and tribological properties.

Název v anglickém jazyce

Enhancing the mechanical and tribological properties of Mg2Si-rich aluminum alloys by multi-pass friction stir processing

Popis výsledku anglicky

Particle strengthening of in-situ Al-Mg2Si composites hinges on effective geometrical parameters (size, distribution, morphology, and volume fraction) of the inherent primary Mg2Si particles. The use of solid-state friction stir processing (FSP) in a multi-pass mode is recognized as a secondary processing route capable of achieving desirable geometrical parameters of Mg2Si particles in Al-Mg2Si composites as compared to other routes. This paper thus studies the microstructure, mechanical properties, and tribological behavior of the multi-pass FSPed in-situ Al-25Mg(2)Si composite with a threaded triangular pin tool. The FSP was conducted at constant tool rotational and traverse speeds of 1000 rpm and 80 mm/min for 1-6 passes. The results showed a decline in the average Mg2Si size (115-3.25 mu m), porosity content (5.8-0.14%), and primary Mg2Si particle-depleted region as the FSP passes are increased (0-6). Improved geometrical parameters of the primary Mg2Si particles enhance microhardness (178-272 HV), tensile strength (102-233 MPa) and wear resistance of the Al-25%Mg2Si composite via particle dispersion and dislocation strengthening effects, grain refinement, and microstructural densification. Multi-pass FSP can be adopted as a better substitute to element addition, casting modification, heat treatment and electromagnetic stirring in effectively controlling the geometrical parameters of the primary Mg2Si in in-situ Al-Mg2Si composites for improved mechanical and tribological properties.

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

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

—

Svazek periodika

250

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

15

Strana od-do

123066

Kód UT WoS článku

000540353500042

EID výsledku v databázi Scopus

2-s2.0-85083432585