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A Study on the Squeeze Casting of Al-7.0Si-0.4Mg Alloy for Fuel System Parts  

김순호 (신라대학교 공과대학 자동차기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.12, 2003 , pp. 48-54 More about this Journal
Abstract
Alumium alloys casting are gaining increased acceptance in the automotive and electronic industeries and squeeze casting is the most efficient method of manufacturing such mass produced parts. This study has been investigated the microstructures and mechanical properties of Al-7.0Si-0.4Mg (AC4C) alloy fabricated by squeeze casting process for development of Fuel system Parts (Fuel rail). The microstructure of squeeze casted specimen were composed of eutectic structure Alumimim solid solution and $Mg_2$Si precipitates. The tensile strength of as-solid solution treatment Al-7.0Si-0.4Mg ahoy revealed 298.5MPa. It was found that Al-7.0Si-0.4Mg alloy have good corrosion resistance in electrochemical polarization test.
Keywords
squeeze casting; Al-7.0Si-0.4Mg alloy fuel rail; Mg$_2$Si precipitates; electrochemical polarization test;
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