A Design Study in Metal Matrix Composite Castings
- AAAV Transmission Case
Choose
an SiC Addition Level
The chart to the left compares the properties of 10% and
20% SiC additions to aluminum, normalized to the C 355 alloy at the 100% level.
The SiC addition level of choice
should have the maximum specific modulus (ratio of modulus to density) to meet the
stiffness requirement while minimizing the weight
In addition,
the alloy should meet or exceed the fluidity requirement (85% of the C 355 level) to
ensure that the molten alloy will fill the mold without flaws.
Which SiC addition (10 vol% or 20 vol%) best meets the requirement for high modulus, low
density, and sufficient fluidity?
