Differences in Material Properties:
1. Magnesium alloys have a relatively low density, about 2/3 that of aluminum alloys, making magnesium products generally lighter than aluminum products.
2. Magnesium alloys have better thermal conductivity and high-temperature resistance, allowing them to operate at higher temperatures. They also possess better mechanical properties and corrosion resistance.
3. Aluminum alloys have better plasticity and machinability, making them suitable for casting complex shapes, while magnesium alloys are more difficult to cast into complex shapes.
Differences in Processing Technology:
1. Magnesium alloys have a lower melting point than aluminum alloys, resulting in lower casting temperatures, which helps reduce energy consumption and production costs.
2. Magnesium alloys are susceptible to oxidation and hot cracking during melting and casting, requiring special pretreatment and casting measures, such as adding special steel sleeves and shields to reduce oxidation and carburization.
3. Aluminum alloys do not require special pretreatment, have better fluidity and filling properties, and can be used to manufacture more precise products.
Differences in Application Areas:
1. Magnesium alloys are mainly used in electronics, medical, aerospace, and automotive fields, such as mobile phone casings, medical devices, aircraft seats, and automotive parts.
2. Aluminum alloys are widely used in construction, transportation, metallurgy, and aerospace fields, such as building doors and windows, automobile bodies, aircraft shells, and railway vehicle parts.
