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Based on the formation and development of the morphological instability of crystallization front (Mullins–Sekerka instability), this chapter studies formation mechanisms of the graded structure and phase composition of plasma-surfaced HSS. The limits to applicability are determined for approximations of different mechanisms of the crystal growth. It is shown that the mechanism of the normal crystal growth adequately explains the formation of structural cells not larger than 5 µm. This mechanism based on screw dislocations provides a 14.8 µm wavelength, which coincides with the experimental data at certain conditions.

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Formation of Graded Structure and Phase Composition of Plasma-Surfaced HSS

  • 章节

  • 发表日期：

    2025年

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  • Aleksandr I. Potekaev,
  • Victor E. Gromov,
  • Yurii F. Ivanov,
  • Sergey A. Nevskii,
  • Sergey V. Konovalov

摘要

Based on the formation and development of the morphological instability of crystallization front (Mullins–Sekerka instability), this chapter studies formation mechanisms of the graded structure and phase composition of plasma-surfaced HSS. The limits to applicability are determined for approximations of different mechanisms of the crystal growth. It is shown that the mechanism of the normal crystal growth adequately explains the formation of structural cells not larger than 5 µm. This mechanism based on screw dislocations provides a 14.8 µm wavelength, which coincides with the experimental data at certain conditions.