Features of the morphology, defect substructure, and phase composition of metal and alloy surfaces upon high-power ion beam irradiation

A. D. Korotaev, A. N. Tyumentsev, Yu P. Pinzhin, G. E. Remnev

Результат исследований: Материалы для журналаСтатья

32 Цитирования (Scopus)

Аннотация

Optical metallography, transmission electron microscopy, and phase analysis were used to study the mechanisms of structural transformations in the surface layer of thickness Δ h ≈0.2 μm for single crystals and polycrystals of metals and alloys irradiated with high-power ion beams (HPIB's). Characteristic features of the formation of the surface relief and variations in phase constitution and defect substructure of pure metals (Ni, Mo) and single-phase (Mo-Re, Ni3Al) and double-phase (V-ZrO2) alloys have been found in relation to the ion beam power density Q =(1-10)×107 W/cm2. Common features and distinctions in the formation of the microstructure of metallic materials belonging to different classes under HPIB irradiation have been revealed. Based on the predictions of a numerical simulation of the time-dependent temperature fields and the melting and evaporation processes in the surface layer, the mechanisms for the phase-structure modification of metal and alloy surfaces are analyzed.

Язык оригиналаАнглийский
Страницы (с-по)38-49
Число страниц12
ЖурналSurface and Coatings Technology
Том185
Номер выпуска1
DOI
СостояниеОпубликовано - 1 июл 2004

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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