期刊
CORROSION SCIENCE
卷 53, 期 11, 页码 3697-3703出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2011.07.013
关键词
Steel; Alloy; Electrochemical calculation
资金
- Fundo para o Desenvolvimento das Ciencias e da Tecnologia (FDCT) [031/2010/A2]
The effects of long-term thermal annealing (15,000 h) between 630 and 800 degrees C on the duplex stainless steel (DSS) 7MoPLUS are investigated by using the double loop electrochemical potentiodynamic reactivation (DLEPR) test. The morphology of the sigma phase exerts a bigger influence on the corrosion resistance than does its composition. No healing has been observed in present DSS, although it has been found in the lean DSS 2101 by other researchers. The healing mechanism in the sigma-phase formation range has been discussed and the reason for the absence of healing in the present steel has been suggested. (C) 2011 Elsevier Ltd. All rights reserved.
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