Paper Title:
Effect of Ti on the Corrosion Behaviour of In Situ Mg2Si Particle Reinforced Al–12Si-20Mg-XTi Alloys
  Abstract

In this study, corrosion behaviour of Al–12Si-20Mg-XTi alloys (Ti content varied between 0 and 4 wt.%) was investigated. Characterizations of the alloys were carried out by microstructural examinations and corrosion tests. Microstructural results showed that precipitation of the Mg2Si phases was observed in Al-12Si-20Mg-XTi alloy matrix as two different morphologies; i.e. as a polyhedral primary particle and as a chinese script. Upon addition of Ti, Al3Ti intermetallic precipitated in the alloy. Corrosion tests were carried out by immersing the alloys in “30 g/l NaCl+10 ml/l HCl” solution. Evaluation of corrosion was determined by measuring weight loss for 24 hours and by potentiodynamic polarization tests. Corrosion resistance of the alloy was approximately constant with 1 wt % Ti addition whereas at higher additions, the corrosion rate increased.

  Info
Periodical
Materials Science Forum (Volumes 636-637)
Edited by
Luís Guerra ROSA and Fernanda MARGARIDO
Pages
511-516
DOI
10.4028/www.scientific.net/MSF.636-637.511
Citation
H. Ahlatci, A. Durmaz, A. Balta, M. Acarer, E. Candan, "Effect of Ti on the Corrosion Behaviour of In Situ Mg2Si Particle Reinforced Al–12Si-20Mg-XTi Alloys", Materials Science Forum, Vols. 636-637, pp. 511-516, 2010
Online since
January 2010
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