Journal ArticleDOI
Dislocation behavior in fatigue II. Friction stress and back stress as inferred from an analysis of hysteresis loops
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TLDR
In this paper, the authors evaluated Fatigue hysteresis loops obtained by three different authors are evaluated to obtain data for the friction stress and back stress acting on the dislocations, and the theoretical discussion of this contribution to friction stress is given in conjunction with the discussion of the back stress in parts III and IV of this series.About:
This article is published in Materials Science and Engineering.The article was published on 1979-02-01. It has received 251 citations till now. The article focuses on the topics: Stress concentration & Stress (mechanics).read more
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Back stress strengthening and strain hardening in gradient structure
TL;DR: In this article, a simple equation and a procedure are developed to calculate back stress basing on its formation physics from the tensile unloading-reloading hysteresis loop.
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Perspective on hetero-deformation induced (HDI) hardening and back stress
Yuntian Zhu,Xiaolei Wu +1 more
TL;DR: Heterostructured materials have been reported as a new class of materials with superior mechanical properties, which was attributed to the development of back stress as discussed by the authors, and there are numerous reports on...
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On the origin of the tensile flow stress in the stainless steel AISI 316L at 300 K: Back stress and effective stress
TL;DR: In this paper, the tensile behavior of a polycrystal austenitic stainless steel at 0.2Tm is discussed in terms of back and effective stresses with the help of qualitative and quantitative TEM observations.
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Low energy dislocation structures produced by cyclic deformation
TL;DR: In this article, it is shown that at low strain amplitudes the dislocation structures are dominated by clusters of prismatic loops; evidence for the dislocations content and interaction of the clusters is reviewed and is shown to be consistent with the establishment of low energy arrays.
Journal ArticleDOI
High-entropy alloys with heterogeneous microstructure: Processing and mechanical properties
TL;DR: In this article, the authors present an overview of the mechanical behavior of high entropy alloys with heterogeneous microstructures that reconcile the strength-ductility synergy and the ductility trade-off.
References
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Journal ArticleDOI
The cyclic hardening and saturation behaviour of copper single crystals
TL;DR: In this paper, an experimental study has been performed on the cyclic deformation of copper single crystals at constant plastic resolved shear-strain amplitudes, over a range 1.55 × 10−5 < γpl < 2 × 10 −2.
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A model for the fatigue of copper at low plastic strain amplitudes
TL;DR: In this article, it was shown that the volume fraction occupied by the persistent slip bands was linearly related to the plastic strain amplitude, and that the PSBs adapted themselves to the applied amplitude by adjusting the relative amounts of the two phases.
Journal ArticleDOI
Strain localization in cyclic deformation of copper single crystals
J.M. Finney,Campbell Laird +1 more
TL;DR: In this paper, the localization of plastic strain into macroscopic groups of persistent slip bands has been determined on copper single crystals strain-cycled into saturation, and the dislocation structure of the slip bands was determined, permitting a critical assessment of the various mechanisms proposed for saturation in low-strain cyclic deformation.
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Dislocation behavior in fatigue
TL;DR: In this article, the authors apply recent advances in understanding mechanisms of unidirectional deformation to fatigue and propose reinterpretations or new mechanisms for the following: the formation of dislocation veins and of persistent slip bands (PSB's), the behavior of dislocations in established PSB's, and the transformation of PSB dipolar walls into dislocation cells.