Scientists from the University of Science and Technology MISIS have developed a new alloy for automobile engines. It consists of 89% aluminum, 8% calcium, 2% manganese and 1% nickel.
Our Al-Ca-Ni-Mn alloy has high manufacturability in the production of not only shaped castings, but also deformed semi-finished products. Previously, it was believed that these were mutually exclusive characteristics. High solidification temperatures and the absence of low-melting phases provide increased heat resistance of these alloys compared to silumins. This property allows you to make more durable and long-lasting pistons for internal combustion engines.
The alloy created by Russian scientists is superior to the currently widely used silumin alloy.
Aluminum-calcium alloys, unlike silumins, have a lower density, a successful combination of mechanical properties and high corrosion resistance, and the combined introduction of manganese and nickel additives contributes to the hardening of the alloy. Calcium allows manganese and nickel to be bound into ternary compounds, which have a favorable compact morphology and do not have a negative impact on mechanical properties, in particular, ductility.