Yield loci for polycrystalline metals without texture

Schmitt, Jean-Hubert; Aernoudt, Etienne; Baudelet, B.

doi:10.1016/0025-5416(85)90173-9

Cited by 126 publications

(40 citation statements)

References 11 publications

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“…This result has been interpreted by the authors to be a consequence of the strain localization induced by orthogonal strain paths as defined by Schmitt [47]. Cross tests are used to promote strain localization.…”

Section: Resultsmentioning

confidence: 76%

Using Microscopy to Help with the Understanding of Degradation Mechanisms Observed in Materials of Pressurized Water Reactors

Legras¹,

Volgin²,

Radiguet³

et al. 2017

JMSE-B

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Abstract:Even if temperature, pressure and chemistry of the cooling water are not very high and aggressive, materials used in PWRs (Pressurized Water Reactors) are exposed to different degradation mechanisms. One of the main goals of the research programs in this field is to develop physical model of the mechanisms down to the atomic scale. Such approach needs a clear description and understanding of the degradation mechanisms at the same small scale. This paper illustrates the benefits of different microscopies and of their last improvements up to the promising possibilities of monochromated and aberrations corrected TEM/STEM. A specific focus is placed on four different degradation mechanisms observed in austenitic stainless steel: irradiation ageing, corrosion fatigue, stress corrosion cracking and corrosion.

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Section: Resultsmentioning

confidence: 76%

Using Microscopy to Help with the Understanding of Degradation Mechanisms Observed in Materials of Pressurized Water Reactors

Legras¹,

Volgin²,

Radiguet³

et al. 2017

JMSE-B

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“…dislocations organizations), the change of the crystallographic texture and the anisotropy of the macroscopic behaviour after two-stage loading. The latter is characterized by the parameter h proposed by Schmitt et al [11].…”

Section: Evolution Of the Intragranular Microstructurementioning

confidence: 99%

Modelling of anisotropic work-hardening behaviour of metallic materials subjected to strain-path changes

Bouvier

Alves

Oliveira

et al. 2005

Computational Materials Science

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The present paper aims at reviewing some recent progress in developing advanced constitutive models which are devoted to the description of the anisotropic work-hardening behaviour under strain-path changes at large strains of metallic materials. After reviewing some microscopic and macroscopic experimental evidence, a physically-based phenomenological model using four internal state tensor variables is presented. This model can be simplified into several classical phenomenological models in order to take into account either the isotropic or the kinematic hardening or both. The implementation of the proposed models in the in-house finite element code DD3IMP is briefly recalled. Numerical simulations of the stamping of a curved rail are carried out in order to evaluate the accuracy and the efficiency of the proposed models in modelling the springback.

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“…In recent studies on the plastic deformation of steel (Ranta-Eskola, 1980;Laukonis, 1981;Wagoner and Laukonis, 1983;Schmitt et al, 1985;Raphanel et al, 1986;Doucet and Wagoner, 1989) aluminium (Lloyd and Sang, 1979;Juul Jensen and Hansen, 1990;Wilson et al, 1990) and copper sheets (Vieira et aL, 1990;Schmitt et al, 1991;Fernandes et al, 1993;Vieira and Fernandes, 1995), the mechanical response in reloading has been exhaustively analysed. For strain path changes other than inversion of the loading conditions, these metals display a behaviour of the second type.…”

Section: Introductionmentioning

confidence: 99%

A modified swift law for prestrained materials

Fernandes

Rodrigues

Menezes

et al. 1998

International Journal of Plasticity

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Al~tracl:--A modified Swift law to describe the evolution of the mechanical behaviour in reloading of prestrained materials is proposed in this work. This equation is deduced from the original Swift law by including a parameter that accounts for the effect of strain path change. This parameter depends on the value of the yield stress and the subsequent work-hardening behaviour in reloading. The: new equation predicts well the general mechanical behaviour in the second path for copper and steel. In particular, it predicts accurately the strain value for which necking occurs during reloading and fits experimental stress-strain curves well. The flow equation formulated remains sufficiently simple to be applied in finite element modelling of prestrained materials. However, since the parameter, which is needed for the modified Swift law, must be previously known, the strain path change itself cannot be part of the simulation.

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Yield loci for polycrystalline metals without texture

Cited by 126 publications

References 11 publications

Using Microscopy to Help with the Understanding of Degradation Mechanisms Observed in Materials of Pressurized Water Reactors

Using Microscopy to Help with the Understanding of Degradation Mechanisms Observed in Materials of Pressurized Water Reactors

Modelling of anisotropic work-hardening behaviour of metallic materials subjected to strain-path changes

A modified swift law for prestrained materials

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