Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 2002.10a
- /
- Pages.273-275
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- 2002
EFFECT OF POST-WELD HEAT TREATMENT OF MARINE STRUCTURE STEEL DURING CATHODIC PROTECTION
- Kim, Seong-Jong (Nagoya University) ;
- Masazumi Okido (Nagoya University) ;
-
Kim, Jin-Gyeong
(Korea Institute of Maritime and Fisheries Technology)
;
- Moon, Kyung-Man (Korea Maritime University)
- Published : 2002.10.01
Abstract
The effect of post-weld heat treatment (PWHT) of marine structures steel was investigated at electrochemical viewpoint. In addition, slow strain rate test (SSRT) was carried out to investigate both electrochemical and mechanical properties by PWHT effect during impressed current cathodic protection. The optimum cathodic protection potential by SSRT was -770 mV(SCE). At the applied cathodic protection potential of -770 mV -850 mV(SCE), the fracture morphology was dimple pattern with ductile fracture, while it was transgranular pattern (Q.C: quasi cleavage) under -875 mV(SCE).
Keywords
- Impressed current cathodic protection;
- Hydrogen embrittlement;
- Post-weld heat treatment;
- Slow strain rate test;
- Electrochemical properties