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Cyclic plasticity, cyclic creep and fatigue life of duplex stainless steel in cyclic loading with positive mean stress
- 1.0370002 - ÚFM 2012 RIV SK eng J - Journal Article
Polák, Jaroslav - Petrenec, Martin - Man, Jiří
Cyclic plasticity, cyclic creep and fatigue life of duplex stainless steel in cyclic loading with positive mean stress.
Kovové materiály. Roč. 49, č. 5 (2011), s. 347-354. ISSN 0023-432X. E-ISSN 1338-4252
R&D Projects: GA AV ČR IAA100480704; GA ČR GA101/07/1500
Institutional research plan: CEZ:AV0Z20410507
Keywords : cyclic plasticity * cyclic creep * duplex steel
Subject RIV: JL - Materials Fatigue, Friction Mechanics
Impact factor: 0.451, year: 2011
Austenitic-ferritic duplex stainless steel was cycled with three constant stress amplitudes and different mean stresses and cyclic stress-strain response and fatigue life were measured. Fatigue hardening/softening curves and cyclic creep curves were recorded. Saturated plastic strain amplitude was plotted vs. stress amplitude to obtain cyclic stress-strain curves for different mean stresses. The dependence of the cyclic stress-strain curve on the mean stress was established. Cyclic creep rate decreases progressively during the fatigue life leading to saturation of the mean stress. Fatigue life decreases with the mean stress and different representation of the fatigue life curves were presented and discussed in terms of crack initiation and growth.
Permanent Link: http://hdl.handle.net/11104/0006765
Number of the records: 1