Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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The Effect of Temperature on Stress Corrosion Cracking of AI Brass under Flow

  • Lim, Uh-Joh (Department of mechanical Engineering, Pukyong National University) ;
  • Jeong, Hae-Kyoo (Outffiting Design Department No.3, Hyundai Heavy Industry Company)
  • Published : 2003.06.01
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Abstract

The effect of temperature on stress corrosion cracking o f Al-brass used in vessel heat exchanger tube was studied in 3.5% NaCI + 0.1% $NH_4OH$ solution. The SCC test using a CDT(constant displacement test) and the specimens using a SEN(single edge notched) specimens. For setting the environment similar to working environment of a heat exchanger, the specimens was immersed in solution and solution flow onto the specimens were performed. The results are as follows : The latent time of stress corrosion crack occurrence gets shorter, as the temperature gets higher. Dezincification phase showed around the crack occupy wider range, as the temperature gets higher. Zn composition falls under 4% at the dezincifiction area.

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References

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