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Strain localization phenomena associated with static and dynamic strain ageing in notched specimens: experiments and finite element simulations

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Title: Strain localization phenomena associated with static and dynamic strain ageing in notched specimens: experiments and finite element simulations
Authors: Graff, S.1 stephanie.graff@ensmp.fr, Forest, S.1, Strudel, J.-L.1, Prioul, C.2, Pilvin, P.3, Béchade, J.-L.4
Source: Materials Science & Engineering: A. Dec2004, Vol. 387-389, p181-185. 5p.
Subjects: Strains & stresses (Mechanics), Aluminum-copper alloys, Mild steel, Alloys
Abstract: The aim of the present work is to use an available constitutive model for the description of the Portevin–Le Châtelier effect to simulate the deformation of notched specimens in tension (smooth and sharp U-notched specimens). This model can be used to account for dynamic strain ageing as suggested by Estrin et al. [Acta Mater. 49 (2000) 1087] but also static strain ageing as suggested by Kubin et al. [Acta Metall. Mater. 40 (1992) 1037]. The experimental material studied is an Al–Cu alloy, displaying dynamic strain ageing at room temperature. Regarding Lüders band propagation, the experimental material studied is a mild steel. This work shows that the PLC serrations disappear progressively on the macroscopic curve when the notch radius decreases. However, strain localization still takes place in the deformed notched zone, and can escape from the notched zone. Regarding the Lüders behavior, the computed spreading of deformation bands is in agreement with experimental observations. [Copyright &y& Elsevier]
Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 15819274
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Strain localization phenomena associated with static and dynamic strain ageing in notched specimens: experiments and finite element simulations
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  Data: <searchLink fieldCode="AR" term="%22Graff%2C+S%2E%22">Graff, S.</searchLink><relatesTo>1</relatesTo><i> stephanie.graff@ensmp.fr</i><br /><searchLink fieldCode="AR" term="%22Forest%2C+S%2E%22">Forest, S.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Strudel%2C+J%2E-L%2E%22">Strudel, J.-L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Prioul%2C+C%2E%22">Prioul, C.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Pilvin%2C+P%2E%22">Pilvin, P.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Béchade%2C+J%2E-L%2E%22">Béchade, J.-L.</searchLink><relatesTo>4</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Materials+Science+%26+Engineering%3A+A%22">Materials Science & Engineering: A</searchLink>. Dec2004, Vol. 387-389, p181-185. 5p.
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  Data: <searchLink fieldCode="DE" term="%22Strains+%26+stresses+%28Mechanics%29%22">Strains & stresses (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum-copper+alloys%22">Aluminum-copper alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Mild+steel%22">Mild steel</searchLink><br /><searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink>
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  Data: The aim of the present work is to use an available constitutive model for the description of the Portevin–Le Châtelier effect to simulate the deformation of notched specimens in tension (smooth and sharp U-notched specimens). This model can be used to account for dynamic strain ageing as suggested by Estrin et al. [Acta Mater. 49 (2000) 1087] but also static strain ageing as suggested by Kubin et al. [Acta Metall. Mater. 40 (1992) 1037]. The experimental material studied is an Al–Cu alloy, displaying dynamic strain ageing at room temperature. Regarding Lüders band propagation, the experimental material studied is a mild steel. This work shows that the PLC serrations disappear progressively on the macroscopic curve when the notch radius decreases. However, strain localization still takes place in the deformed notched zone, and can escape from the notched zone. Regarding the Lüders behavior, the computed spreading of deformation bands is in agreement with experimental observations. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials Science & Engineering: A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.msea.2004.02.083
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        Text: English
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        Type: general
      – SubjectFull: Aluminum-copper alloys
        Type: general
      – SubjectFull: Mild steel
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              Text: Dec2004
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