Influence of hetero-duplex structure on mechanical properties of Mg-Al/Cu-Zn alloys

G. A. Song, T. E. Kim, D. H. Kim, F. Prima, K. B. Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Hetero-duplex structure containing both structural and spatial heterogeneities has been developed in a series of Mg-Al/Cu-Zn alloys. Among these alloys, a hetero-duplex Mg72Cu5Zn23 alloy with uniform dispersion of spherical duplex colonies exhibits high yield strength of 455MPa with a plasticity of ∼5%. On the contrary, a hetero-duplex Mg70Al3Zn22 alloy consisting of typical polygonal duplex colonies undergoes catastrophic failure without macroscopic plasticity. Based on these results, it is possible to consider that the morphology of the hetero-duplex colony plays an important role to control the macroscopic plasticity of the hetero-duplex alloys.

Original languageEnglish
Pages (from-to)371-378
Number of pages8
JournalMaterials Science and Engineering A
Volume528
Issue number1
DOIs
Publication statusPublished - 2010 Nov 25

All Science Journal Classification (ASJC) codes

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

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