Abstract
A machine is described whereby the high temperature creep properties of metals can be studied under the action of a constant compressive stress. Precautions have been taken to ensure axial loading and to reduce barrelling of the cylindrical specimen to a minium. An optical extensometer is incorporated which enables strains of 1.3 × 10-5 to be measured. Provision is made for the use of an inert atmosphere operating at a pressure of up to 1 in. of mercury. Details are given of several tests conducted on oxygen-free, high conductivity copper and a copper-7% aluminium alloy.
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