Mechanical and electrochemical characteristics evaluation in
annealing treatment for ship material
(1. Division of Marine Engineering, Mokpo Maritime University, Mokpo City, Jeonnam 530-729, Korea;
2. Jeonnam Techno Park, Suncheon City, Jeonnam 540-856, Korea)
2. Jeonnam Techno Park, Suncheon City, Jeonnam 540-856, Korea)
Abstract: The effect of heat treatment on the electrochemical and mechanical properties of SS400 steel was investigated, and the effects of annealing conditions on notched specimens subjected to the slow strain rate test (SSRT) were studied. The results show that no correlations are observed among the maximum tensile strength, yield strength, and stress corrosion cracking. In contrast, the elongation and time-to-fracture are improved with stress-relieving annealing compared with the as-received condition. The elongation, time-to-fracture, and number of dimples increase with annealing heat treatment.
Key words: heat treatment; SS400 steel; electrochemical and mechanical properties; slow strain rate test; stress corrosion cracking