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- Title
Fatigue-Crack-Growth Behavior of Two Pipeline Steels.
- Authors
Chen, Bilin; Wang, Gongyao; Chen, Shuying; Muralidharan, Govindarajan; Stalheim, Doug; Sun, An‐Cheng; Huang, E‐Wen; Liaw, Peter K.
- Abstract
The fatigue-crack-growth behavior of two types of pipeline steels, Alloy B [Fe-0.05C-1.52Mn-0.12Si-0.092Nb, weight percent (wt%)] and Alloy C (Fe-0.04C-1.61Mn-0.14Si-0.096Nb, wt%), have been investigated. Compact-tension (CT) specimens have been tested at various frequencies (10, 1, and 0.1 Hz) and different R ratios (0.1 and 0.5, R = Pmin/Pmax where Pmin is the minimum applied load, and Pmax is the maximum applied load) in air. It is concluded that higher R ratios lead to faster crack-growth rates (FCGRs), while frequency does not have much influence on FCGRs. Moreover, Alloy B tends to have better fatigue resistance than Alloy C under various test conditions in air.
- Subjects
FATIGUE crack growth; STEEL alloys; CRACKING of pipelines
- Publication
Advanced Engineering Materials, 2016, Vol 18, Issue 12, p2028
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.201600340