Abstract:
The aim of this research work is to develop an aluminium alloy
which can be used in conditions like high temperature and high pressure.
High pressure die castings, specially engine components of automobiles
and heavy vehicles are the important components which need to survive
in such challenging working environment. Silicon, Nickel and Chro-
mium found to be suitable filler materials to be used in high pressure and
high temperature conditions based on literature reviews. Based on the
individual physical, chemical and thermo-mechanical properties of Si, Ni
and Cr, these elements were selected as alloying elements and alloys Al-
Si, Al-Si-Cr and Al-Si-Ni were prepared. The prepared samples were
tested for various thermo-mechanical properties and the results were an-
alyzed. Tensile strength values are obtained from hardness values based
on Mayer’s hardness. Thermal conductivity values were obtained from
electrical conductivity values based on Wiedemann–Franz law. Void
content is calculated from practical and theoretical density values. At the
end of the research, the new aluminium alloys proposed in this work
found to be better replacements for aluminium metal which is currently
in use for many high pressure high temperature applications.
