Quasicrystalline and L12 precipitates in a microalloyed Al-Mn-Cu alloy

Franc Zupanič, Christian Gspan, B. Burja, Tonica Boncina*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

An Al-Mn-Cu alloy was microalloyed with beryllium, scandium and zirconium, cast into a copper mould, and aged at different temperatures. It was characterised using X-Ray Diffraction, Differential Scanning Calorimetry and Transmission Electron Microscopy. The compression tests of samples aged at 400 °C for 1 h were performed at room temperature, 300 °C and 350 °C, while the accelerated creep tests were performed at 300 °C and 350 °C. Icosahedral QuasiCrystalline and L12 precipitates prevailed in the as-aged microstructure, while the fraction of decagonal precipitates was low. The precipitates possessed specific orientation relationships with the matrix. The alloy exhibited enhanced hardness, compressive strength, and creep resistance in comparison to the Al-Mn-Cu alloys
Original languageEnglish
Article number100809
Number of pages6
JournalMaterials Today / Communications
Volume22
DOIs
Publication statusPublished - Mar 2020

Keywords

  • Metals and alloys
  • Microstructure
  • Quasicrystals
  • TEM
  • Transmission electron microscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Materials Chemistry

Fields of Expertise

  • Advanced Materials Science

Treatment code (Nähere Zuordnung)

  • Basic - Fundamental (Grundlagenforschung)

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