Briefly describe the advantages of magnesium alloy materials
Source：Time：2018-09-22 10:08:49Click rate：
Pure magnesium is not suitable as a structural material, but the magnesium alloy after adding alloy elements has a high strength and can be used as a structural material.Magnesium alloys have the following advantages as structural materials: (1) Light weight.As a lightweight metal structural material, magnesium alloy has a density of 1.74 gcm-3， 2 equivalent to aluminum /3，Steel l/4，Zinc 1 /4about.This feature is of great significance for modern handheld products to reduce weight and reduce energy consumption in vehicles. (2) Higher specific strength.Under equal rigidity, 1 kg The magnesium alloy is strong enough to 18 kg Aluminum and 2.1 kg steel. (3) High shock absorption performance.Magnesium has excellent shock absorption performance of hysteresis and elasticity, which can absorb vibration and noise. It is used as a equipment case to reduce noise transmission, resist impact, and reduce depression damage. Its impact resistance is 20 times that of plastic. (4) Good casting performance.Under the condition of maintaining a good structure, the wall thickness of the magnesium product may be less than 0.6 mm， This is something that plastic products cannot achieve at the same strength.Aluminum can only be at 1.2 ~1.5mm Only within the range can be compared with magnesium. (5) High mold casting productivity.Compared to aluminum, magnesium alloy has lower heat capacity, which means it solidifies faster in the mold.Generally speaking, its productivity is 40% higher than that of aluminum die casting ~50%，It can reach twice as much as die-cast aluminum. (6) Good cutting performance.The good cutting performance of magnesium is reflected in: allowing higher cutting speeds and shortening cutting processing time;It has several times the tool life than other metals (Few shutdowns and tool change save operating time and tool cost )；It can be cut in one piece to obtain excellent surface finish, and there are very few crumb accumulations;It has good chip breaking characteristics and temperature conductivity, and can avoid the use of coolant or lubricant. (7) Regenerative.Waste magnesium alloy castings can be remelted and used as AZ9lD、AM50 or AM60 The raw materials are cast.Due to the growing demand for die castings, the ability to recycle is very important.This environmentally friendly feature makes magnesium alloy more attractive than many plastic materials. (8) High heat dissipation.Magnesium alloys have high heat dissipation properties and are suitable for today's electronic products with dense components. 9) Anti-electromagnetic interference and good shielding.Magnesium alloy has good electromagnetic wave barrier function and is suitable for electronic products that need to be protected from electromagnetic interference.No pollution to the environment.Magnesium and magnesium alloys are non-toxic metals, and magnesium is oxidized into magnesium ions and is not harmful to the environment.
