Journal of Materials Science

, Volume 25, Issue 5, pp 2595–2597 | Cite as

Microstructure studies in Al-6% Si-1.9% Cu-x% Mg alloys

  • S. Zafar
  • Nazma Ikram
  • M. A. Shaikh
  • K. A. Shoaib


The nature of precipitates formed in the aged Al-6% Si-1.9%Cu-x%Mg alloys (where x varies from 0.2 to 1.13) was investigated using scanning and transmission electron microscopy. Vickers hardness and grain size were measured. Results showed peak hardness around 4 and 10 h ageing time for 0.54% Mg and 1.13% Mg alloy, respectively. Hardness was found to increase with increasing magnesium content except for the 1.13% Mg alloy aged for 10 h. Q-phase particles have been observed and these are most probably responsible for the variation of hardness.


Polymer Grain Size Microstructure Microscopy Electron Microscopy 
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Copyright information

© Chapman and Hall Ltd. 1990

Authors and Affiliations

  • S. Zafar
    • 1
  • Nazma Ikram
    • 1
  • M. A. Shaikh
    • 2
  • K. A. Shoaib
    • 2
  1. 1.Centre for Solid State PhysicsPunjab UniversityLahorePakistan
  2. 2.Nuclear Physics DivisionPINSTECHIslamabadPakistan

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