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- W2182339983 abstract "By means of a Gleeble machine, the flow stress at steady state creep in an AA3103 aluminium alloy has been measured for temperatures and strain rates relevant for thermally induced deformations in DC casting. The strain rate has been determined by measuring the global radial strain rate at the specimen centre by an extensometer, and the stress has been set equal to the force in the axial direction divided by the cross section area. The parameters of Garofalo’s equation have been fitted to the resulting steady state stress and strain rate. Such a method is based upon the assumption of homogeneous stress and strain rate fields. In the Gleeble machine, the specimens are heated by the Joule effect leading to axial temperature gradients, and the specimen geometry is non-cylindrical. The resulting inhomogeneities in the stress and strain rate fields are studied by finite element modelling, and it is shown that although they can be significant, the global radial strain rate and the axial force divided by the cross section area at the specimen centre can be relatively close to what the respective strain rate and stress values would have been if the conditions actually were homogeneous." @default.
- W2182339983 created "2016-06-24" @default.
- W2182339983 creator A5005627523 @default.
- W2182339983 date "2000-01-01" @default.
- W2182339983 modified "2023-09-24" @default.
- W2182339983 title "Thermally induced deformations and hot tearing during direct chill casting of aluminium" @default.
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