期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 71, 期 -, 页码 35-44出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2013.11.013
关键词
Very-high-cycle fatigue; Aqueous environment; Fatigue life; Fatigue crack initiation; Structural steel
资金
- National Basic Research Program of China [2012CB937500]
- National Natural Science Foundation of China [11172304, 11021262, 11202210]
The influence of environmental media on crack propagation of a structural steel at high-cycle and very-high-cycle fatigue (VHCF) regimes was investigated with the fatigue tests in air, water and 3.5% NaCl aqueous solution. The fatigue strength in water and 3.5% NaCl solution is significantly decreased and the cracking morphology due to different driving forces is presented. A model is proposed to explain the influence of environmental media on fatigue life, which reflects the variation of fatigue life with applied stress, grain size, inclusion size and material yield stress. The model prediction is in good agreement with experimental observations. (C) 2013 Elsevier Ltd. All rights reserved.
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