Magnesium alloy is an excellent lightweight structural material with high strength and good corrosion resistance. In shipbuilding, steel is traditionally used as the structural material, but with the increasing requirements for energy saving, environmental protection and reducing ship’s own weight, magnesium alloy as a new material has gradually attracted the attention of the shipbuilding industry. The application of magnesium alloy forgings in Marine manufacturing has the following advantages: Light weight and high strength: Magnesium alloy has a lighter density than steel, while having higher strength and rigidity. The use of magnesium alloy forgings can significantly reduce the ship’s own weight, improve the load capacity and sailing efficiency. Good corrosion resistance: The ship operates in the Marine environment and needs to face the corrosion of seawater. In contrast, magnesium alloy has better corrosion resistance, which can reduce the corrosion damage of the hull and extend the service life. High damping performance: Magnesium alloy has good damping performance, which can effectively reduce the vibration and vibration of the ship during sea sailing, and improve the stability and ride comfort of the ship. Good malleability: magnesium alloy has good malleability and processability, and is easy to be formed and processed. This provides more flexibility in the design and manufacture of ships to meet the needs of different shapes and complex structures. However, the application of magnesium alloys in shipbuilding also faces some challenges: high cost: compared with traditional steel, the cost of magnesium alloys is higher, which will increase the investment cost of shipbuilding. Corrosion issues: Although magnesium alloys have good corrosion resistance, additional measures are still needed to protect magnesium alloy materials in the Marine environment to prevent corrosion. Therefore, whether to use magnesium alloy forgings in Marine manufacturing needs to consider various factors, including conditions of use, cost effectiveness and feasibility. At present, the application of magnesium alloy ships is still in its infancy, and further research and development is needed to overcome the technical and economic challenges.
