NDLI: Wear Dry Behavior of the $Al-6061-Al_{2}O_{3}$ Composite Synthesized by Mechanical Alloying

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Wear Dry Behavior of the $Al-6061-Al_{2}O_{3}$ Composite Synthesized by Mechanical Alloying

Content Provider	MDPI
Author	Juan, Carlos Díaz-Guillén Jan, Mayén-Chaires Maricruz, Hernández-Hernández Isa, ías Emmanuel Garduño Mercado-Lemus, Víctor Hugo Gomez-Esparza, Cynthia Daisy Gallegos-Melgar, Adriana Arcos-Gutierrez, Hugo Betancourt-Cantera, José Antonio Perez-Bustamante, Raúl
Copyright Year	2021
Description	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 $Al_{2}O_{3}$ nanoparticles $(Al-6061-Al_{2}O_{3}$) 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 $(Al-6061-Al_{2}O_{3}$) 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.
Starting Page	1652
e-ISSN	20754701
DOI	10.3390/met11101652
Journal	Metals
Issue Number	10
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-10-18
Access Restriction	Open
Subject Keyword	Metals Manufacturing Engineering Aluminum Matrix Composites Alumina Reinforcement Dry Sliding Conditions Ball-on-disk Configuration
Content Type	Text
Resource Type	Article

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