Journal of Materials Science

, Volume 29, Issue 6, pp 1549–1552 | Cite as

Complex microstructural changes in as-cast eutectoid Zn-Al alloy

  • Y. H. Zhu
  • G. Torres-Villaseñor
  • C. Piña


Phase transformations and microstructural changes of an as-cast eutectoid Zn-Al alloy (ZnAl22Cu2) were investigated during isothermal holding. The typical dendritic structures consisted of α′s phase as a core with the edge of decomposed β′s phase and decomposed η′s in the interdendritic regions. A series of complex phase transformations was observed. Both decompositions of β′s and η′s were determined at an early stage of ageing and a four-phase transformation, αf+ɛ→T′+η, was observed at the boundaries of αf phase and the ɛ phase, instead of clearly observed at the boundaries of ɛ phase, in a solution-treated Zn-Al alloy during prolonged ageing.


Polymer Phase Transformation Material Processing Microstructural Change Dendritic Structure 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • Y. H. Zhu
    • 1
    • 2
  • G. Torres-Villaseñor
    • 1
  • C. Piña
    • 1
  1. 1.Department of Materials Science and EngineeringTongji UniversityShanghaiPeople’s Republic of China
  2. 2.Instituto de Investigaciónes en Materiales Universidad Nacional Autónoma de MéxicoMéxico D.F.Mexico

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