Corrosion fatigue behavior of duplex stainless steel in 3.5% Sodium chloride solution

被引：0
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作者：
Abubakir, S.H. [1 ]
Wu, Y. [1 ]
Ding, B. [1 ]
Li, J. [1 ]
Cao, B. [1 ]
机构：
[1] Material Sci. and Engineering School, University of Science and Technology, Beijing 100083, China
来源：
| 2001年 / University of Science and Technology Beijing卷 / 08期
关键词：
Corrosion fatigue - Crack initiation - Crack propagation - Fatigue testing - Fracture testing - pH effects - Sodium chloride - Stresses;
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摘要：
The corrosion fatigue behavior of duplex stainless steel (DSS) was studied at different cyclic stress levels in 3.5%NaCl (mass fraction, so as the follows) solution (pH = 7) at 50 °C. The results showed that DSS was susceptible to pitting corrosion and corrosion fatigue. Both intergranluar corrosion cracking and transgranlular corrosion cracking initiated at the bottom of pitting holes. Furthermore, the corrosion fatigue properties of DSS in 3.5%NaCl solution may be relatived to complex electrochemical and mechanical coupling effects between the three phases (austenite, ferrite and martensite), where martensite and ferrite were anodic in the corrosion cell and could be prone to cracking under certain condition.
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页码：133 / 136
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