Plastic deformation of the CuAuI alloy at temperatures between-196 and 385degrees C

An ordered CuAu alloy without domain boundaries was mechanically tested at temperatures from -196 to 385 degreesC. The temperature dependence of the y ield strength was shown to he anomalous. The dislocation structure of the a lloy deformed to 3% at different temperatures was examined by electron micr oscopy. Specific features of superdislocations that art, responsible for th e positive temperature dependence of the yield strength were detected. Vari ous models of the anomalies observed are discussed.