Microstructural changes inside the lamellar structures of alloy ZA27

Y. H. Zhu, Suet To, X. M. Liu, Wing Bun Lee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

The microstructural changes inside the lamellar structure of the cast and aged alloy ZA27 were studied using TEM, XRD and SEM techniques. Using TEM, the network of transitional phase ηm′was determined to be of an fcc crystal structure inside the lamellae η phase during ageing at 150 °C. The mechanism of the decomposition of the η phase lamellae can be summarized as follows: η → ηm′+ η′ → α + η. The adjacent co-existence of the ε phase and the T′ phase inside the α phase lamellae confirmed that a four phase transformation, α + ε → T′ + η, had occurred during the prolonged ageing.
Original languageEnglish
Pages (from-to)326-332
Number of pages7
JournalMaterials Characterization
Volume57
Issue number4-5
DOIs
Publication statusPublished - 1 Dec 2006

Keywords

  • Lamellar structure
  • Phase decomposition
  • Zn-Al alloys

ASJC Scopus subject areas

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

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