Abstract
A device has been constructed for measuring the changes in internal energy of metals and alloys during deformation. The basis of the method is the quantitative utilization of the heat released in the sample to vaporize a pure liquid under equilibrium conditions, and measurement of the volume of gas produced. The liquids which have been used are N2, CCl2F2, and CCl3F, having boiling points of −196, −30, and 24°C, respectively.

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