1. Why is the O temper aluminum plate preferred for its better ductility, but H116 temper is still chosen for welding structural components in ships?
The H116 temper aluminum plate is preferred for welding structural components in ships due to its higher strength and better resistance to stress corrosion cracking compared to the O temper. This makes it more suitable for withstanding the harsh marine environment.
2. How does the process of work hardening affect the choice of H116 temper for shipbuilding?
The H116 temper aluminum plate undergoes a process called work hardening during fabrication, which increases its strength and hardness. This makes it more suitable for structural components in ships where high strength and durability are required.
3. What role does stress corrosion cracking play in the selection of H116 temper for shipbuilding?
Stress corrosion cracking is a common issue in the marine environment, where the combination of tensile stress and corrosive elements can cause cracking in the metal. The H116 temper aluminum plate has better resistance to stress corrosion cracking compared to the O temper, making it a more suitable choice for shipbuilding applications.
4. How does the H116 temper aluminum plate perform in terms of weldability compared to the O temper?
The H116 temper aluminum plate has good weldability, making it easier to fabricate and assemble structural components in ships. This, combined with its higher strength and resistance to stress corrosion cracking, makes it a preferred choice for shipbuilding applications.
5. In conclusion, the selection of the H116 temper aluminum plate for shipbuilding is based on its superior strength, resistance to stress corrosion cracking, and good weldability. While the O temper aluminum plate may have better ductility, the H116 temper is better suited for the demanding requirements of shipbuilding applications.
