Effect of low frequency vibration on porosity of LM25 and LM6 alloys


Kocatepe K.

MATERIALS & DESIGN, vol.28, no.6, pp.1767-1775, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 28 Issue: 6
  • Publication Date: 2007
  • Doi Number: 10.1016/j.matdes.2006.05.004
  • Title of Journal : MATERIALS & DESIGN
  • Page Numbers: pp.1767-1775
  • Keywords: porosity, aluminium-silicon alloys, casting, vibration, EUTECTIC ALLOYS, SOLIDIFICATION, HYDROGEN

Abstract

This study summarises research into the effect of low frequency mechanical vibration on the porosity of unmodified and metallic sodium modified LM25 [Al-Si 7.15%] and LM6 [Al-Si 12.30%] alloys. Vibration at varying frequencies between 15 and 41.7 Hz and amplitudes between 0. 125 and 0. 5 mm has been applied to both unmodified and metallic sodium modified LM6 and LM25 alloys during solidification. The effect of low frequency vibration on the porosity was analysed using optic and quantitative metallographic techniques. The results indicated that: