Abstract
Mechanical fracture of iron and graphite powders leads to formation of the amorphous Fe–C phase and subsequent precipitation of the Fe3C carbide in the Fe(75)C(25) system and Fe3C→Fe7C3 carbide in the Fe(68)C(32) system, which are in strongly strained states. After annealing, carbides with undistorted structures are formed, and their content is higher. On the initial stage of this mechanical alloying, the magnetic characteristics of these structures are determined by their defectiveness, and on the subsequent stages of fracturing and annealing by the types, quantities, and structural conditions of the resulting carbide phases.
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Ul'yanov, A.I., Gorkunov, E.S., Zagainov, A.V. et al. Effect of Structure and Phase Composition on Coercive Force and Saturation Magnetization of Mechanically Alloyed Fe100 – xCx (x = 25, 32) Powders. Russian Journal of Nondestructive Testing 38, 528–536 (2002). https://doi.org/10.1023/A:1022110506280
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DOI: https://doi.org/10.1023/A:1022110506280