Synthesis of surface layers hardened by metal trialuminide compound in al–si alloy under compression plasma flows impact

N. N. Cherenda, N. V. Bibik, V. V. Uglov, V. M. Astashynski, A. M. Kuzmitski

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The structure, phase, and element composition of Al–12%Si piston silumin surface layer alloyed with titanium, zirconium, or niobium atoms were investigated in this work. Alloying was carried out by deposition of an alloying element coating on the silumin surface and subsequent treatment with compression plasma flows generated by a gas-discharge magnetoplasma accelerator. The findings showed that plasma impact resulted in the formation of a composite surface layer containing a supersaturated aluminum solid solution and disperse intermetallic phases on the basis of Al3Ti, Al3Zr, and Al3Nb compounds with a tetragonal D022 crystal lattice. The size of intermetallic particles was in the range of 1–4 µm. Silicon atoms took part in the formation of a supersaturated Al(Si) solid solution and intermetallic phases, e.g., (Al, Si)3Zr. The synthesized composite layer possessed a high hardness value (up to 4.4 GPa). The main mechanisms of the structure transformation during plasma impact were discussed.

Original languageEnglish
Pages (from-to)1-13
Number of pages13
JournalHigh Temperature Material Processes
Volume18
Issue number1-2
DOIs
Publication statusPublished - 2014

Fingerprint

Plasma flow
metal compounds
magnetohydrodynamic flow
Intermetallics
intermetallics
surface layers
Compaction
Metals
alloying
Solid solutions
solid solutions
synthesis
Niobium
Magnetoplasma
Plasmas
Atoms
composite materials
Composite materials
gas discharges
Silicon

Keywords

  • Compression plasma flows
  • Crystal lattice
  • Hardness
  • Silumin
  • Trialuminide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)
  • Materials Science(all)
  • Energy Engineering and Power Technology
  • Spectroscopy
  • Physical and Theoretical Chemistry

Cite this

Synthesis of surface layers hardened by metal trialuminide compound in al–si alloy under compression plasma flows impact. / Cherenda, N. N.; Bibik, N. V.; Uglov, V. V.; Astashynski, V. M.; Kuzmitski, A. M.

In: High Temperature Material Processes, Vol. 18, No. 1-2, 2014, p. 1-13.

Research output: Contribution to journalArticle

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AU - Kuzmitski, A. M.

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