Effects of cross-channel extrusion on the microstructures and superplasticity of a Zn-22 wt.% Al eutectoid alloy

Cheng Yu Chou, Sheng Long Lee, Jing Chie Lin, Ching Miow Hsu

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The purpose of this study was to investigate the effects of cross-channel extrusion on the microstructures and superplasticity of a Zn-22 wt.% Al alloy. Extrusion gradually transforms the initial laminar Al-rich phase into a spherical shape, and the particle sizes are refined to 0.3 and 1 μm at extrusion temperatures of 373 and 473 K, respectively. The size and uniformity of the Al-rich phase results in a superplasticity that is enhanced significantly after extrusion for up to 10 passes.

Original languageEnglish
Pages (from-to)972-975
Number of pages4
JournalScripta Materialia
Volume57
Issue number10
DOIs
StatePublished - Nov 2007

Keywords

  • Severe plastic deformation
  • Superplasticity
  • Zn-22 wt.% Al

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