Modification effect of Sr on the microstructures and mechanical properties of Al-10.5Si-2.0Cu recycled alloy for die casting

Sang Soo Shin, Eok Soo Kim, Gil Yong Yeom, Jae Chul Lee

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

The effect of Sr addition on the microstructure and mechanical properties of Al-10.5Si-2.0Cu (in wt%) recycled die-casting alloy was studied. With increasing Sr content, the morphology of the eutectic Si evolved from coarse acicular → lamellar → fine fibrous shapes. Sr addition significantly improved the mechanical properties, with the tensile strength being increased from 209 to 237. MPa and the elongation from 2.0 to 4.1%. This improvement was associated with the morphological evolution of the eutectic Si and was qualitatively evaluated by using a quality index.

Original languageEnglish
Pages (from-to)151-157
Number of pages7
JournalMaterials Science and Engineering A
Volume532
DOIs
Publication statusPublished - 2012 Jan 15

Keywords

  • Die-casting alloys
  • Eutectic si
  • Fine fibrous
  • Holding time
  • Modification
  • Strontium

ASJC Scopus subject areas

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

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