Homogeneous Distribution of Alumina Nanoparticles in the 6061 Aluminum Alloy via Mechanical Alloying

Mercado, Víctor; Pérez, R.; Díaz-Guillén, J.C.; Alvaréz-Vera, M.; Arcos-Gutiérrez, Hugo; Mayén, Jan; Salas-Reyes, Antonio Enrique; Gallegos-Melgar, Adriana; Hernández-Hernández, Maricruz; Acevedo, J.

doi:10.1017/s1431927620023132

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“…The mechanical alloying can be used to produce alloys and compounds that are difficult or impossible to obtain by conventional melting as casting techniques [17][18][19][20]. The mechanical alloyed technique consists of repeated welding, fracturing, and rewelding of powder particles, leading to particle size variations and changes in the powder particle shape [16].…”

Section: Introductionmentioning

confidence: 99%

Wear Dry Behavior of the Al-6061-Al2O3 Composite Synthesized by Mechanical Alloying

Mercado-Lemus¹,

Gomez-Esparza

Díaz-Guillén³

et al. 2021

Metals

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The present research deals with the comparative wear behavior of a mechanically milled Al-6061 alloy and the same alloy reinforced with 5 wt.% of Al2O3 nanoparticles (Al-6061-Al2O3) under different dry sliding conditions. For this purpose, an aluminum-silicon-based material was synthesized by high-energy mechanical alloying, cold consolidated, and sintered under pressureless and vacuum conditions. The mechanical behavior was evaluated by sliding wear and microhardness tests. The structural characterization was carried out by X-ray diffraction and scanning electron microscopy. Results showed a clear wear resistance improvement in the aluminum matrix composite (Al-6061-Al2O3) in comparison with the Al-6061 alloy since nanoparticles act as a third hard body against wear. This behavior is attributed to the significant increment in hardness on the reinforced material, whose strengthening mechanisms mainly lie in a nanometric size and homogeneous dispersion of particles offering an effective load transfer from the matrix to the reinforcement. Discussion of the wear performance was in terms of a protective thin film oxide formation, where protective behavior decreases as a function of the sliding speed.

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Section: Introductionmentioning

confidence: 99%

Wear Dry Behavior of the Al-6061-Al2O3 Composite Synthesized by Mechanical Alloying

Mercado-Lemus¹,

Gomez-Esparza

Díaz-Guillén³

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

show abstract

Homogeneous Distribution of Alumina Nanoparticles in the 6061 Aluminum Alloy via Mechanical Alloying

Abstract: This is an Accepted Manuscript for the Microscopy and Microanalysis 2020 Proceedings. This version may be subject to change during the production process.

Cited by 1 publication

References 3 publications

Wear Dry Behavior of the Al-6061-Al2O3 Composite Synthesized by Mechanical Alloying

Wear Dry Behavior of the Al-6061-Al2O3 Composite Synthesized by Mechanical Alloying

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