Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1581329 | Materials Science and Engineering: A | 2008 | 10 Pages |
Abstract
Low cycle fatigue (LCF) tests were performed for a type 316Ti stainless steel (SS) in high temperature water. Fatigue crack initiation behaviors in high temperature water were investigated. It was found that there existed several kinds of Ti-bearing precipitates, consisting of isolated TiN or duplex (Al, Mg)O/TiN, Mo-rich (Ti, Mo)C and Ti(N,C) in the steel. Fatigue cracks were mainly initiated at Ti-bearing precipitates, phase boundaries of austenite/α-ferrite phases and persistent slip bands (PSBs) in austenite. It is believed that synergism between the mechanical factors and electrochemical reactions played a key role in the process of fatigue crack initiation in high temperature water. Related fatigue crack initiation mechanisms for the 316Ti SS are discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
S. Xu, X.Q. Wu, E.H. Han, W. Ke, Y. Katada,