Abstract
A new method of deformation calorimetry is applied to single crystals of high purity copper and aluminum. Specimens are deformed by tension at room temperature. To obtain the energy stored during plastic deformation (defined as the difference between the work of deformation and the heat evolved by the specimen) with reasonable accuracy we had to develop methods to measure the quantities temperature, load, and strain, with an accuracy of about 0.001. Heat conductivity is fully taken into account by using an experimental response function. The experiments yield the stored energy as a function of strain and shear stress as well as the influence of crystal orientation and strain rate.
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