Particle erosion of die cast Al-14Si alloy and influence of friction stir process

T. W. Cheng, L. H. Chen, Truan-Sheng Lui

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The current research aimed to explore the particle erosion of a die cast Al-14Si alloy, and how the particle erosion behaviour can be affected by modification of the microstructure via friction stir process. The results indicate that friction stirring of the alloy can annihilate the dendritic structure of primary α-Al, break the eutectic Si and β-Al 3(Fe,Mn)Si 2 particles lengthwise, cause the eutectic Si particles to become more rounded, and blend the second phase particles rather uniformly in the α-Al matrix. According to the SiO 2 particle erosion test at 15 and 90° impact angles, this microstructure modification can improve the erosion resistance by not only particle reinforcement of α-Al matrix but also suppressing the susceptibility of brittle cracking of the second phase particles.

Original languageEnglish
Pages (from-to)155-159
Number of pages5
JournalInternational Journal of Cast Metals Research
Volume25
Issue number3
DOIs
Publication statusPublished - 2012 Jun

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Metals and Alloys

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