Thermo-Induced Phase Transformations in Mechanically Synthesized Nanocomposites Based on (Fe,Mn,Ni)75C25

The formation of phases in mechanically synthesized (Fe 0.90− x Mn 0.10 Ni x ) 75 C 25 alloys, where х = 0.05 and 0.10, is studied via X-ray diffraction, Mössbauer spectroscopy, and magnetic measurements. It is shown that certain products form during the mechanosynthesis of the initial powders in a...

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Bibliographic Details
Published in:Bulletin of the Russian Academy of Sciences. Physics 2021-09, Vol.85 (9), p.993-997
Main Authors: Chulkina, A. A., Ulyanov, A. I., Volkov, V. A., Ulyanov, A. L., Porsev, V. E., Zagainov, A. V.
Format: Article
Language:English
Subjects:
Annealing
Ball milling
Cementite
Curie temperature
Hadrons
Heat resistant alloys
Heavy Ions
High temperature
Iron
Magnetic measurement
Manganese
Mossbauer spectroscopy
Nanocomposites
Nickel
Nuclear Physics
Phase transitions
Physics
Physics and Astronomy
Synthesis
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Summary:The formation of phases in mechanically synthesized (Fe 0.90− x Mn 0.10 Ni x ) 75 C 25 alloys, where х = 0.05 and 0.10, is studied via X-ray diffraction, Mössbauer spectroscopy, and magnetic measurements. It is shown that certain products form during the mechanosynthesis of the initial powders in a planetary ball mill: cementite doped mainly with manganese, ferrite, and an amorphous phase doped mainly with nickel. Annealing at 500°C and higher temperatures leads to the formation of a composite consisting of cementite and austenite doped mainly with nickel. Cementite regions with two different Curie temperatures form as the alloys cool after high-temperature (700°C) annealing, due to differences in the manganese doping of cementite in these regions.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873821090070