J.H. Xie
,
Y.S. Wu
,
J.Q. He
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X.Z.Yang and R.Z. Zhu (Department of Surface Science & Corrosion Engineering
,
University of Science and Technology Beijing
,
Beijing 100083
,
China)
金属学报(英文版)
This paper investigates the corrosion fatigue (CF) crack initiation behavior of 316L stainless steel in Hank's solution which simulates bodylike fluid. The CF experiments were conducted under the conditions of electrochemically accelerated, free immersion and pre-polarized pitting potential. The results showed that 316L stainless steel was susceptible to pitting corrosion in Hank's solution. Intergranular corrosion occurred obviously at the bottom of pits where the CF cracks initiated by the combined action of alternating stress and corrosive medium for the notch effect of stress concentrated in the grain boundaries.The CF crack propagation is both intergranular and transgranular.
关键词:
: aritificial joints
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B.F. Ding
,
Y.S. Wu
,
S.H. Abubakir
金属学报(英文版)
The corrosion fatigue behavior of stainless steel 3RE60 in 3.5%NaCl solution wasstudied at different cyclic stress levels. The results showed that both intergranularcorrosion cracking and transgranular corrosion cracking initiated at the bottom ofpits. The corrosion fatigue behavior of 3RE60 may be related to complex electrochem-ical and mechanical coupling effects between the three phases (austenite, ferrite andmartensite), where martensite and ferrite were anodic in the corrosion cell and couldbe prone to crack under certain conditions.
关键词:
corrosion fatigue
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