A study of the hot formability of an Al-Cu-Mg-Zr alloy
作者： S. Spigarelli , M. Cabibbo , E. Evangelista , J. Bidulská
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摘要: The high-temperature plasticity of a Zr-stabilised 2014 aluminium alloy was investigated in wide range temperatures and strain rates. microstructure representative torsioned samples analysed by transmission electron microscopy, the characteristics particle precipitate distribution were quantitatively estimated. strain-rate dependence on stress temperature means conventional constitutive equations used for describing hot-working behaviour as well modified form sinh equation, where substituted an effective stress, i.e., difference between threshold stress. This temperature-dependent found to be fraction Orowan generated precipitates increasing from 62 94% decreased 773 573 K.
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