Cyclic plastic deformation and cyclic hardening/softening behavior in 304LN stainless steel

Paul, Surajit Kumar and Sivaprasad, S and Dhar, S and Tarafder, S (2010) Cyclic plastic deformation and cyclic hardening/softening behavior in 304LN stainless steel. Theoretical and Applied Fracture Mechanics, 54 (1). pp. 63-70.

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Abstract

Low cycle fatigue experiments have been conducted on 304LN stainless steel in ambient air at room temperature. Uniaxial ratcheting behavior has also been studied on this material and in both engineering and true stress controlling modes. It is shown that material's cyclic hardening/softening behavior in low cycle fatigue and in ratcheting is dependent not only on material but also on the loading condition. Improvement of ratcheting life and mean stress dependent hardening are observed in the presence of mean stress. A method based on the strain energy density (SED) is used to represent cyclic hardening/softening behavior of the material in this work. The decrease of SED with cycles is an indication that the life in low cycle fatigue and in ratcheting is improved. The SED represents the area of the hysteresis loops. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type:Article
Official URL/DOI:DOI: 10.1016/j.tafmec.2010.06.016
Uncontrolled Keywords:Low cycle fatigue; Ratcheting; Cyclic hardening; True stress-strain; Strain energy density
Divisions:Material Science and Technology
ID Code:3285
Deposited By:Mr. G Shailendra Kumar
Deposited On:13 Jul 2011 11:43
Last Modified:09 Jan 2012 10:24
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