Structural changes in dispersion strengthened Al-Fe-V-Si alloy at elevated temperatures

V. Ezersky, M. Talianker

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The effect of high-temperature exposure on the microstructural evolution in the rapidly solidified Al-8.5Fe-1.3V-1.7Si alloy has been investigated by transmission electron microscopy. Decomposition of the microstructure starts with the formation of vanadium-rich intermetallic particles of composition close to (Al, Si)45(V, Fe)7, isostructural with the monoclinic Al45V7 phase. The appearance of this phase was observed in the specimens subjected to heat treatment at 450°C for 200 hours. Then, at the higher temperature of 500°C, needle-shaped particles of the monoclinic Al13Fe4 structure, 2-3 μm length, grew in the matrix after the exposure for 250 hours. The process was accompanied by significant coarsening of some of the nanoparticles, thus indicating that there exists a correlation between destabilization of α-Al12(Fe,V)3Si nanoparticles and the appearance of vanadium and iron containing phases.

Original languageEnglish
Pages (from-to)607-612
Number of pages6
JournalMaterials Science Forum
Volume269-272
Issue numberPART 2
DOIs
StatePublished - 1 Jan 1998

Keywords

  • Aluminium alloys
  • Nanoparticles
  • Transmission electron microscopy

ASJC Scopus subject areas

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

Fingerprint

Dive into the research topics of 'Structural changes in dispersion strengthened Al-Fe-V-Si alloy at elevated temperatures'. Together they form a unique fingerprint.

Cite this