Structure and properties changes of Al-Si alloy treated by pulsed electron beam

Dmitry Zagulyaev, Sergey Konovalov, Victor Gromov, Alexander Glezer, Yurii Ivanov, Roman Sundeev

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Using up-to-date methods of material studies, it is revealed that the structure of as cast Al-Si alloy (silumin) is multi-phased and morphologically heterogeneous. It consists of solid solution grains and eutectic Al-Si with a diverse morphology. With the help of selective etching intermetallic compounds (AlNiCu and AlMg) are detected on the grain boundaries of α-solid solution. Treatment of silumin samples by the intense pulsed electron beam with the diverse density results in release of the second phase sub-micro and nano-dimensional particles. According to experiments optimal energy densities of the electron beam are 25, 30 and 35 J/sm2. Silumin irradiation results in a manyfold advance of mechanical and tribological properties of the surface layers. As found out, these characteristics of the surface layers change significantly due to the sub-micro and nano-dimensional structure of cellular crystallization formed by the electron beam, which is free of primary inclusions consisting of silicon and intermetallic compounds.

Original languageEnglish
Pages (from-to)377-380
Number of pages4
JournalMaterials Letters
Volume229
DOIs
Publication statusPublished - 15 Oct 2018

Fingerprint

Electron beams
electron beams
Intermetallics
intermetallics
Solid solutions
surface layers
Silicon Compounds
solid solutions
Silicon compounds
silicon compounds
Crystallization
eutectics
Eutectics
casts
Etching
Grain boundaries
grain boundaries
flux density
etching
Irradiation

Keywords

  • Electron microscopy
  • Metals and alloys
  • Multilayer structure
  • Pulsed electron beam

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Structure and properties changes of Al-Si alloy treated by pulsed electron beam. / Zagulyaev, Dmitry; Konovalov, Sergey; Gromov, Victor; Glezer, Alexander; Ivanov, Yurii; Sundeev, Roman.

In: Materials Letters, Vol. 229, 15.10.2018, p. 377-380.

Research output: Contribution to journalArticle

Zagulyaev, Dmitry ; Konovalov, Sergey ; Gromov, Victor ; Glezer, Alexander ; Ivanov, Yurii ; Sundeev, Roman. / Structure and properties changes of Al-Si alloy treated by pulsed electron beam. In: Materials Letters. 2018 ; Vol. 229. pp. 377-380.
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AU - Sundeev, Roman

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