Phase composition and morphology development in WE-type alloys modified by high Zn content

Bohumil Smola, Ivana Stuliková, Nad́ Žaludová, František Hnilica, Vit Janik, Vladivoj Očenášek

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Quasicrystalline icosahedral equilibrium phase was found in Mg-Y-Nd (WE43) alloys with the addition of 12 wt.% and 25 wt.% Zn constituting grain boundary eutectic phases. In response to the isochronal annealing, morphologically similar precipitates of phases with the same structure as those developing during heat treatment of binary Mg-8 wt.% Zn alloy at temperatures higher than 150 °C were observed, namely β01 (b-centered monoclinic crystal structure a = 2.596 nm, b = 1.428 nm, c = 0.524 nm, c = 102.5°) and b0 2 (hexagonal MgZn2). The evolution of the resistivity and microhardness during isochronal annealing corresponds to the phase transformations and the morphology changes of the phases observed. Dislocations with the c Burgers vector component generated due to the presence of icosahedral phase are responsible for the improved formability as compared to the WE43 alloy.

Original languageEnglish
Pages (from-to)292-295
Number of pages4
JournalInternational Journal of Materials Research
Volume100
Issue number3
DOIs
Publication statusPublished - 2009
Externally publishedYes

Keywords

  • Icosahedral phase
  • Magnesium alloys
  • Rare earth
  • Zinc

ASJC Scopus subject areas

  • Metals and Alloys
  • Materials Chemistry
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Phase composition and morphology development in WE-type alloys modified by high Zn content'. Together they form a unique fingerprint.

  • Cite this