期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 82, 期 -, 页码 402-410出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2015.08.021
关键词
Very high cycle fatigue; Crack initiation and growth; Hydrogen; Fine granular area (FGA); Formation mechanism
资金
- National Natural Science Foundation of China [51101094]
- Science and Technology Research Key Project of Colleges and Universities in Hebei Province [ZD2015045]
The fine granular area (FGA) plays a crucial role in the VHCF regime. However, so far, the uniform understanding or conclusion about the formation mechanism of FGA has not been drawn. In view of the significance of FGA, the current studies on FGA, i.e., the FGA size, the stress intensity factor range at the periphery of FGA, the crack initiation and growth process in FGA, and the formation mechanisms of FGA, are reviewed in the present paper. The role of internal hydrogen in the VHCF regime is further discussed. In the end, two important definite conclusions are drawn based on the present investigations. (C) 2015 Elsevier Ltd. All rights reserved.
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