Creep rupture of the drawn copper wire

Abstract

This investigation presents the creep rupture behaviour of drawn copper wire. Creep studies were carried at 290oC under differentes stress 98, 108 and 118 MPa. The variation of rupture time of the material with stress followed a power law relation. The time to onset of tertiary stage of deformation was directly proportional to rupture time. The value of damage tolerance factor indicates the creep damage results from growth of cavities by coupled diffusion and power-law creep during creep in the drawn copper wire. The data were analyzed in terms of Larson–Miller parameter.