Effects of cathodic protection potential on corrosion fatigue crack growth for a duplex stainless steel in synthetic sea water

被引：0
|
作者：
Misawa, T. [1 ]
机构：
[1] Muroran Technology Inst, Japan
来源：
Corrosion engineering | 1989年 / 38卷 / 05期
关键词：
Corrosion--Corrosion Fatigue;
D O I：
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学科分类号：
摘要：
The corrosion fatigue crack growth rate da/dN has been measured for α + γ duplex SUS 329J1 stainless steel in synthetic seawater with free corrosion and at various cathodic potentials for a frequency of 0.17 Hz. The effects of the cathodic potential on da/dN as a function of ΔK are discussed for values greater than 20 MPa&middotm 1/2 . With cathodic potentials of -0.40 to -0.80 V (Ag/AgCl), da/dN became much larger than on open circuit. Cathodic polarization potentials accelerated the growth rate considerably because of hydrogen embrittlement.
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页码：315 / 318
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