Topic
Hardening (metallurgy)
About: Hardening (metallurgy) is a research topic. Over the lifetime, 25584 publications have been published within this topic receiving 376012 citations.
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TL;DR: The role of strain hardening for the deformation of thin Cu films was investigated quantitatively by conducting specialized tensile testing allowing the simultaneous characterization of the film stress and the dislocation density as a function of plastic strain this paper.
230 citations
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TL;DR: In this paper, the authors presented the ordinary state-based peridynamic constitutive relations for plastic deformation based on von Mises yield criteria with isotropic hardening.
Abstract: This study presents the ordinary state-based peridynamic constitutive relations for plastic deformation based on von Mises yield criteria with isotropic hardening. The peridynamic force density–stretch relations concerning elastic deformation are augmented with increments of force density and stretch for plastic deformation. The expressions for the yield function and the rule of incremental plastic stretch are derived in terms of the horizon, force density, shear modulus, and hardening parameter of the material. The yield surface is constructed based on the relationship between the effective stress and equivalent plastic stretch. The validity of peridynamic predictions is established by considering benchmark solutions concerning a plate under tension, a plate with a hole and a crack also under tension.
229 citations
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TL;DR: In this paper, the softening and hardening observed in the high purity specimens are interpreted as the results of hydrogen-dislocation interactions; it is proposed that hydrogen atoms trapped at the core of a screw dislocation increase its mobility and that hydrogen atom hinder the motion of edge dislocations at sufficiently low temperatures.
229 citations
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TL;DR: In this paper, the authors studied how temperature, from the ambient temperature to 900°C, affects the mechanical properties of Al 0.5 CoCrCuFeNi alloys in different wrought states.
229 citations
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TL;DR: In this article, the springback angles and anticlastic curvatures reported for a series of draw-bend tests have been analyzed in detail using a new anisotropic hardening model, four common sheet metal yield functions, and finite element procedures developed for this problem.
229 citations