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The effect of predeformation and heat treatment on microstructure of Al-7.0% Si-0.45% Mg alloy cast through SIMA route

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Abstract

The effect of warm working, hot working and heat treatment conditions on microstructure of Al-7.0%Si-0.45%Mg alloys were investigated in strain induced melt activation (SIMA) process. Predeformation of 30%, 40% and 50% was done by hot working. The hot working has been carried out at 380°C. The samples of various deformations were kept at 580°C, 590°C, 600°C with varied soaking time for 10, 20, 30 min respectively. It was found that increased predeformation reduced the soaking time to obtain globular α Al grains. The shape factor and metallography were done on SIMA processed Al-7.0%Si-0.45%Mg alloys. Those were compared with as cast Al-7.0%Si-0.45%Mg alloy and it was observed that strain induced predeformation and subsequently melt activation has caused the globular microstructure of the alloy.

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Authors and Affiliations

  1. Metallurgical and Materials Engg., Malaviya National Institute of Technology, Jaipur, 302 017, India

    Madhulika Srikanth

  2. Deptt. of Metallurgical and Materials Engg., Malaviya National Institute of Technology, Jaipur, 302 017, India

    Ashok Sharma

Authors
  1. Madhulika Srikanth
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  2. Ashok Sharma
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Correspondence to Madhulika Srikanth.

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Srikanth, M., Sharma, A. The effect of predeformation and heat treatment on microstructure of Al-7.0% Si-0.45% Mg alloy cast through SIMA route. Trans Indian Inst Met 63, 11–14 (2010). https://doi.org/10.1007/s12666-010-0002-4

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  • DOI: https://doi.org/10.1007/s12666-010-0002-4

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