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Open AccessArticle

Effect of Milling Conditions on the Microstructural Design in Aluminum Based Alloy Fabricated by SPS

1
Spark Plasma Sintering Research Laboratory, 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.
Metals 2019, 9(11), 1164; https://doi.org/10.3390/met9111164
Received: 8 October 2019 / Revised: 24 October 2019 / Accepted: 26 October 2019 / Published: 29 October 2019
In this work, aluminum-based alloys were mechanically alloyed by various doping elements followed by spark plasma sintering. Three different mixing methods were studied. First, all elemental powders were mixed for 24 h. In the second and the third method, powders were divided into three groups, and each group was milled separately for different times. Then the obtained mixtures were grouped together and again milled for 12 and 24 h, for the M2 and M3 mixtures, respectively. The influence of milling parameters on the microstructural features of sintered samples was determined using a scanning electron microscope (SEM) equipped with an energy-dispersive X-ray spectroscopy system. The correlation observed between the milling time and microstructural evolution of the powder particles during the milling process was to determine the optimal process parameters. For the first time, the present research has demonstrated the effectiveness of the milling process for the preparation of tailored mixtures of metallic powders, enabling microstructural characteristics that could be favorable for the formation of secondary structures on the tribosurfaces. View Full-Text
Keywords: Al-Sn-Pb alloy; mechanical alloying; spark plasma sintering; SEM-EDX; microstructure Al-Sn-Pb alloy; mechanical alloying; spark plasma sintering; SEM-EDX; microstructure
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Smirnov, A.; Kuznetsova, E.; Pristinskiy, Y.; Podrabinnik, P.; Mironov, A.; Gershman, I.; Peretyagin, P. Effect of Milling Conditions on the Microstructural Design in Aluminum Based Alloy Fabricated by SPS. Metals 2019, 9, 1164.

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