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Article

Enhancement of the Mechanical and Tribological Properties of Aluminum-Based Alloys Fabricated by SPS and Alloyed with Mo and Cr

1
Department of High-Efficiency Processing Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, Russia
2
Department of Scientific Research Programs, Grants and Projects, Railway Research Institute JSC “VNIIZHT”, 3rd Mytischinskaya Street 10, Moscow 107996, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Salvatore Grasso
Metals 2021, 11(12), 1900; https://doi.org/10.3390/met11121900
Received: 12 October 2021 / Revised: 18 November 2021 / Accepted: 24 November 2021 / Published: 25 November 2021
Multicomponent aluminum-based alloys doped with chromium (Cr) and molybdenum (Mo), fabricated by spark plasma sintering (SPS), derived from a powder mixture prepared by mechanical alloying, were studied in this work. The morphology of the pristine and worn surfaces was analyzed using a scanning electron microscope equipped with an energy-dispersive X-ray spectroscopy system. The obtained alloys exhibited higher hardness (73 and 72) for the Al–Mo and Al–Cr alloys, respectively, compared to reference bronze. Besides improved hardness, SPS-sintered alloys also showed a lower value of the weight and linear wear and the highest score-resistance compared to bronze. The enhanced tribological behavior is related to the formation of secondary structures on the friction surfaces of rubbing pairs, which in turn reduce wear. For the first time, the present research has demonstrated the effectiveness of the addition of Mo and Cr for the fabrication of sintered multicomponent Al-based alloys with a tailored microstructure that induces the formation of secondary structures on the tribosurfaces due to the self-organization processes during friction. View Full-Text
Keywords: Al–Sn–Pb alloy; mechanical alloying; spark plasma sintering; microstructure; mechanical behavior; tribological properties; secondary structures Al–Sn–Pb alloy; mechanical alloying; spark plasma sintering; microstructure; mechanical behavior; tribological properties; secondary structures
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MDPI and ACS Style

Grigoriev, S.N.; Mironov, A.; Kuznetsova, E.; Pristinskiy, Y.; Podrabinnik, P.; Pinargote, N.W.S.; Gershman, I.; Peretyagin, P.; Smirnov, A. Enhancement of the Mechanical and Tribological Properties of Aluminum-Based Alloys Fabricated by SPS and Alloyed with Mo and Cr. Metals 2021, 11, 1900. https://doi.org/10.3390/met11121900

AMA Style

Grigoriev SN, Mironov A, Kuznetsova E, Pristinskiy Y, Podrabinnik P, Pinargote NWS, Gershman I, Peretyagin P, Smirnov A. Enhancement of the Mechanical and Tribological Properties of Aluminum-Based Alloys Fabricated by SPS and Alloyed with Mo and Cr. Metals. 2021; 11(12):1900. https://doi.org/10.3390/met11121900

Chicago/Turabian Style

Grigoriev, Sergey N., Alexander Mironov, Ekaterina Kuznetsova, Yuri Pristinskiy, Pavel Podrabinnik, Nestor Washington Solís Pinargote, Iosif Gershman, Pavel Peretyagin, and Anton Smirnov. 2021. "Enhancement of the Mechanical and Tribological Properties of Aluminum-Based Alloys Fabricated by SPS and Alloyed with Mo and Cr" Metals 11, no. 12: 1900. https://doi.org/10.3390/met11121900

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