Sahu, J K and Krupp, U and Christ, H J (2012) Fatigue crack initiation behavior in embrittled austenitic–ferritic stainless steel. International Journal of Fatigue, 45 . pp. 8-14.
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Abstract
Fatigue crack initiation behavior in duplex stainless steel was studied in the embrittled condition (aging at 475 ◦C for 100 h) by interrupting fatigue tests conducted at different Dr/2 values, identifying the crack initiation sites and relating them to the crystallographic parameters obtained from electron back scattered diffraction scans. From the fatigue crack initiation studies conducted at Dr/2 = 400 and 500 MPa, it was concluded that the crack initiation sites are the slip markings corresponding to {111} plane in austenite at 400 MPa and more cracks were observed to initiate at twin boundaries in austenite at 500 MPa in the aged condition.
| Item Type: | Article |
|---|---|
| Official URL/DOI: | http://dx.doi.org/10.1016/j.ijfatigue.2012.06.018 |
| Uncontrolled Keywords: | Fatigue crack initiation, Duplex stainless steel, 475◦C, embrittlement Slip band Twin boundaries |
| Divisions: | Material Science and Technology |
| ID Code: | 5960 |
| Deposited By: | Dr. A K Sahu |
| Deposited On: | 28 Aug 2012 10:57 |
| Last Modified: | 28 Aug 2012 11:03 |
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