According to the data, since the 1790s, marine vehicles have been made of aluminum alloy profiles
and other aluminum alloys and have been practically applied. Since then, the development of aluminum-shaped ships has become faster and faster.
In the 1860s, people used the characteristics of aluminum alloys to solve problems such as exfoliation corrosion, intergranular corrosion and stress corrosion of ships, which was a major progress in the development of marine aluminum alloys. In the 1970s, people increased the development and application of aluminum alloy profiles in order to reduce the weight and gaps of ships. With the development of aluminum profiles, the decline of aluminum prices and some advanced manufacturing techniques and methods, as well as the lightweight of ships, more and more attention has been paid to the application of aluminum profiles on ships. Aluminum alloy profiles have become a promising material in the shipbuilding industry.
Today, aluminum alloy profiles are more and more widely used in the shipbuilding industry, ranging from small sampans and motor boats to large ships of 10,000 tons, from civilian to military, from high-speed hovercraft to deep-water submarines, from fishing boats to marine mining ships. Good aluminum alloy materials are used for hull, superstructure, various facilities, pipelines and even utensils. The use of aluminum in shipbuilding can not only save resources and energy, protect the environment, obtain huge social benefits, but also bring considerable economic benefits.
The construction and working environment of ships require materials with good corrosion resistance, weldability, plasticity, and certain tensile strength, yield strength, elongation, and impact resistance. And aluminum alloy profiles or aluminum alloy sheets can just meet these requirements, so the application prospects of aluminum alloy products in ships and transportation vehicles are becoming more and more broad.