Title of article :
Role of dynamic strain aging on low cycle fatigue and crack propagation of type 316L(N) stainless steel
Author/Authors :
Kim، Dae Whan نويسنده , , Kim، Woo Gon نويسنده , , Ryu، Woo-Seog نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-1202
From page :
1203
To page :
0
Abstract :
The EFS (Electrochemical Fatigue Sensor) is a device that is based on a study of electrochemical–mechanical interactions, providing information about the status of fatigue damage in a material, and promises to become a useful non-destructive, niche testing tool. The EFS has been shown to function for several commercial alloys, as well as in different environments. The present work is to confirm the feasibility of applying the EFS for assessing fatigue damage in duplex stainless steels. A second goal is to investigate the possibility of using an aggressive environment as an electrolyte within the EFS device. In doing so, corrosion-fatigue testing was conducted in EFS solutions at three different pH values: 8.4, 6 and 2. The results show that the fatigue life is longer at a pH value of 6. Such an unexpected environmental effect is discussed and related to the dissolution of the surface roughness generated by cyclic deformation, together with a higher repassivation rate.
Keywords :
Stainless steel , Dynamic strain aging , Low cycle fatigue , nitrogen
Journal title :
INTERNATIONAL JOURNAL OF FATIGUE
Serial Year :
2003
Journal title :
INTERNATIONAL JOURNAL OF FATIGUE
Record number :
84364
Link To Document :
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