Application and corrosion protection of titanium alloy in ships

The ship is a relatively important equipment of the navy, which is the platform for maritime transportation and combat. The materials used for building the ship should be able to withstand the corrosion of sea water and Marine atmosphere, with high specific strength, good plasticity, toughness and processing technology. Due to the complex structure of the ship, the amount of materials used is large, and there are many kinds and specifications. Selecting materials with excellent performance to make warships is the basis for the integrity and reliability of naval equipment.

Titanium alloy in ship to application, mainly based on the following features of titanium alloy: the strength of a wide range, excellent mechanical properties, physical properties (including magnetic), high specific strength and * * structure, excellent corrosion resistance and erosion resistance, good shock resistance, good machinability and weldability, reasonable cost and * *. Experience in using a large number of Marine piping material, confirmed that the service life of the pipeline system in the traditional material is limited, among them, the steel pipe system using 1 ~ 2 years can produce corrosion, CuNi the service life of the piping system for 6 ~ 8 years, and titanium alloy pipe in the pipe system, pumps, valves, heat exchangers and other equipment can serve more than 40 years. Since Marine titanium alloys need to be used in Marine environment for a long time, the strength, stress corrosion fracture toughness and weldability of the alloy should be considered comprehensively when designing Marine titanium alloys.