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Open AccessArticle

The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment

Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia in Katowice, 41-500 Chorzów, Poland
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Materials 2021, 14(5), 1218; https://doi.org/10.3390/ma14051218
Received: 8 February 2021 / Revised: 24 February 2021 / Accepted: 26 February 2021 / Published: 4 March 2021
The paper investigates changes in the structure, microhardness, and sclerometrical and tribological properties of a Mg-Y-Nd alloy under the influence of deep cryogenic treatment (DCT) in combination with heat treatment. The solution treatment was carried out at 545 °C for 8 h, aging was carried out at 250 °C for 24 h, and the deep cryogenic treatment applied at different treatment stages was performed at −196 °C. Tests showed a significant increase in the number of β-phase precipitates identified as Mg46.1Y6.25RE3.45 in the alloy subjected to DCT after solution treatment followed by aging. In addition, an approximately 20% reduction of the grain size was observed. Changes in the structure in the precipitation process strengthened the alloy and resulted in an increase of its hardness. At the same time, sclerometric tests allowed the micromechanism of wear and the coefficient of resistance to abrasive wear to be determined. Tribological tests showed a three-fold reduction in the volumetric wear and a considerable reduction of the friction coefficient, with the main mechanism observed during friction being abrasive wear. The most favorable properties of the alloy were obtained after precipitation hardening combined with DCT, resulting in a large increase in resistance to abrasive wear. Additionally, the formation of deep scratches in the examined material was reduced. The introduction of sub-zero treatment reduces the precipitation hardening time, and the results obtained indicate that the service life of the Mg-Y-Nd alloy can be extended. View Full-Text
Keywords: Mg-Y-Nd magnesium alloy; deep cryogenic treatment (DCT); microstructure; X-ray diffraction; microhardness; sclerometrical properties; wear Mg-Y-Nd magnesium alloy; deep cryogenic treatment (DCT); microstructure; X-ray diffraction; microhardness; sclerometrical properties; wear
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MDPI and ACS Style

Barylski, A.; Aniołek, K.; Dercz, G.; Kupka, M.; Matuła, I.; Kaptacz, S. The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment. Materials 2021, 14, 1218. https://doi.org/10.3390/ma14051218

AMA Style

Barylski A, Aniołek K, Dercz G, Kupka M, Matuła I, Kaptacz S. The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment. Materials. 2021; 14(5):1218. https://doi.org/10.3390/ma14051218

Chicago/Turabian Style

Barylski, Adrian; Aniołek, Krzysztof; Dercz, Grzegorz; Kupka, Marian; Matuła, Izabela; Kaptacz, Sławomir. 2021. "The Sclerometrical, Mechanical, and Wear Behavior of Mg-Y-Nd Magnesium Alloy after Deep Cryogenic Treatment Combined with Heat Treatment" Materials 14, no. 5: 1218. https://doi.org/10.3390/ma14051218

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