期刊
CORROSION SCIENCE
卷 88, 期 -, 页码 349-359出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2014.07.059
关键词
Alloy; SEM; Corrosion fatigue; High temperature corrosion; Inclusion
资金
- Special Funds for the Major State Basic Research Projects [2011CB610506]
- Science and Technology Foundation of China [51371174]
- Science and Technology Project of Yunnan Province
- Technology Development (Cooperation) Fund from Yunnan Wenshan Dounan Manganese Industry Co., Ltd.
- Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences
Influence of TiN inclusion on corrosion fatigue behavior of three types of as-received Alloy 690 steam generator tubes (J, C1 and C2) in borated and lithiated high temperature water was investigated. The volume fraction of inclusions in tube J, C1 and C2 were about 0.0894%, 0.0384% and 0.1843%. The fatigue life of tube C2 was slightly shorter than that of tube J and C1. Large broken TiN inclusions and TiN-inclusion clusters played a significant role on fatigue crack initiation and propagation for tube C2 in high temperature water. The inclusion-involved fatigue cracking mechanisms are discussed. (C) 2014 Elsevier Ltd. All rights reserved.
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