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In EC3, the fatigue life of a steel structure subjected to a cyclic load is estimated by its detail category. This category is based on the S-N, curves which are obtained by applying the Basquin model. Statistically, this model does not allow extrapolating the S-N curves in the HCF region, neither does it consider the runouts. This affects the fatigue life estimation when a structure bears loading in HCF. To overcome these deficiencies, a new method based on a Weibull distribution is applied.
Ermüdung --- zyklische Beanspruchung --- Weibull --- S-N Curves --- Wöhlerkurven --- Cyclic Loading --- Runouts --- Fatigue --- Durchläufern
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Stainless steels represent a quite interesting material family, both from a scientific and commercial point of view, following to their excellent combination in terms of strength and ductility together with corrosion resistance. Thanks to such properties, stainless steels have been indispensable for the technological progress during the last century and their annual consumption increased faster than other materials. They find application in all these fields requiring good corrosion resistance together with ability to be worked into complex geometries. Despite to their diffusion as a consolidated materials, many research fields are active regarding the possibility to increase stainless steels mechanical properties and corrosion resistance by grain refinement or by alloying by interstitial elements. At the same time innovations are coming from the manufacturing process of such a family of materials, also including the possibility to manufacture them starting from metals powder for 3D printing. The Special Issue scope embraces interdisciplinary work covering physical metallurgy and processes, reporting about experimental and theoretical progress concerning microstructural evolution during processing, microstructure-properties relations, applications including automotive, energy and structural.
reversion --- iron alloys --- reverted austenite --- n/a --- corrosion --- microstructure --- scatter index --- stainless steel --- electron backscattered diffraction --- supermartensitic stainless steel --- metastable austenitic stainless steel --- additive manufacturing --- fatigue --- mechanical spectroscopy --- stainless steel alloys --- 304L stainless steel --- non-metallic inclusions --- deformation --- connection --- nitriding --- non-metallic inclusion --- welding --- phase diagrams --- S–N curves --- surface treatments --- mechanical properties --- fatigue strength --- stainless-steel structure --- Hertz theory --- phase transformation --- prestrain --- high-speed steel --- Cr martensitic steel --- repair --- superduplex stainless steels --- historic timber structures --- cold rolling --- VOD refining --- borides --- annealing --- welded joints --- hot deformation --- Ca treatment --- reinforcement --- electrolytic extraction --- laser powder bed fusion --- point defects --- innovation --- high-boron steel --- duplex stainless steel --- secondary phases --- formation mechanism --- kinetics model --- duplex stainless steels --- simulations --- electric current --- intermetallics --- medical applications --- electrically assisted annealing --- grain size --- stainless steels --- structural dynamics --- finite element explicit analysis --- S-N curves
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