The Effect of Temperature on Stress Corrosion Cracking of Al Brass under Flow
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The effect of temperature on stress corrosion cracking of Al-brass used in vessel heat exchanger tube was studied in 3.5% NaCl + 0.1% NH4OH 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.
Abstract
The effect of temperature on stress corrosion cracking of Al-brass used in vessel heat exchanger tube was studied in 3.5% NaCl + 0.1% NH4OH 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.