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المؤلفEl Mehtedi, M.
المؤلفMusharavati, F.
المؤلفSpigarelli, S.
تاريخ الإتاحة2016-10-02T09:33:45Z
تاريخ النشر2014-02
اسم المنشورMaterials & Design (1980-2015)
المعرّفhttp://dx.doi.org/10.1016/j.matdes.2013.09.013
الاقتباسM. El Mehtedi, F. Musharavati, S. Spigarelli, Modelling of the flow behaviour of wrought aluminium alloys at elevated temperatures by a new constitutive equation, Materials & Design (1980-2015), Volume 54, February 2014, Pages 869-873
الرقم المعياري الدولي للكتاب02613069
معرّف المصادر الموحدhttp://www.sciencedirect.com/science/article/pii/S0261306913008650
معرّف المصادر الموحدhttp://hdl.handle.net/10576/4803
الملخصThe hot working behaviour of an Al–0.7%Mg–0.4%Si (wt.%) aluminium alloy has been investigated by torsion testing in the 450–575°C temperature range. The behaviour of the alloy, in terms of equivalent stress vs equivalent strain, was modelled by a modified form of the Hensel and Spittel constitutive equation. In this new equation, the applied stress σ was replaced by the sinh(ασ) term, where α was a constant. The revised form of the Hensel–Spittel equation gave an excellent description of the flow curves and of the decrease in the strain rate sensitivity of the flow stress observed, at a given strain, with increasing strain rate. The model equation was then rewritten to explicitly include the Arrhenius term describing the temperature dependence of strain rate. The calculation indicated that the activation energy for hot working decreased from 218 to 198kJmol−1 in the considered range of strain.
اللغةen
الناشرElsevier, Ltd
الموضوعHot working
Constitutive equations
Mechanical characterization
Aluminium alloys
العنوانModelling of the flow behaviour of wrought aluminium alloys at elevated temperatures by a new constitutive equation
النوعArticle
الصفحات869-873
رقم المجلد54
dc.accessType Abstract Only


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