Topic
Fatigue limit
About: Fatigue limit is a research topic. Over the lifetime, 20489 publications have been published within this topic receiving 305744 citations. The topic is also known as: endurance limit & fatigue strength.
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TL;DR: In this paper, the results of an extensive investigation on the stress intensity factors (SIFs) and strain energy release rate (SERR) for the same joints are presented and discussed.
90 citations
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TL;DR: In this paper, the authors analyzed the fatigue crack propagation behavior of a magnesium single crystal using molecular dynamics simulation and found that the growth rate of fatigue crack decreasing with increasing strain rate.
90 citations
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TL;DR: In this paper, the authors used FSWed 5083-H111 and 6082-T651 aluminum alloy plates in 6-mm thickness that are used particularly for shipbuilding industry were welded using Friction Stir Welding (FSW) method as similar and dissimilar joints with one side pass at PA position with the parameters of 1250rpm tool rotation, 64mm/min welding speed and 2° tool tilt angle.
90 citations
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TL;DR: In this paper, a low carbon annealed steel has been first prestrained and then cycled in load control with zero mean stress and a new softening parameter, based on the changes in plastic strain amplitude with cycling, was defined to describe the softening process and its kinetics.
90 citations
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08 Apr 2021-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the effects of different surface severe plastic deformation techniques including severe shot peening, laser shock peening and ultrasonic nanocrystal surface modification have been investigated on the microstructure, mechanical properties and fatigue behavior of nickel-based superalloy Inconel 718.
Abstract: As most of the failures in engineering components initiate from the surface layer, applying surface treatments can play a crucial role in controlling material performance and lifetime. In this study, different surface severe plastic deformation techniques including severe shot peening, laser shock peening and ultrasonic nanocrystal surface modification have been considered. The effects of process parameters and the kinetic energy of each treatment on the microstructure, mechanical properties and fatigue behavior of nickel-based super-alloy Inconel 718 have been investigated. The results revealed that using the proper parameters to increase the kinetic energy of the applied surface treatments, it is possible to effectively promote surface grain refinement and induce a deep compressive residual stress field in Inconel 718 samples. Among the applied treatments, ultrasonic nanocrystal surface modification was found to be the most efficient one in improving the mechanical properties as it led to the most significant fatigue performance, followed by severe shot peening and laser shock peening.
90 citations