
%0 Journal Article
%A Boas, W 
%A Nicholas, JF 
%T Validity of Matthiessen's Rule for Cold-worked Wires
%J Australian Journal of Physics
%D 1953/03/01
%V 6
%N 1
%P 116-121
%K 
%R https://doi.org/10.1071/PH530116
%U https://www.publish.csiro.au/paper/PH530116 
%X Matthiessen's rule has been tested by, determining the slopes of the electrical resistivity-temperature curves for wires of eight common metals and alloys in various states of deformation by wire-drawing. The results show that the slope is independent of deformation, i.e. the rule is true, to within 0·5 per cent. for nickel, copper (two purities), iron, and 80/20 brass, and to within 1 per cent. for aluminium. However, for 75/25 brass and an aluminium bronze, deformations corresponding to logarithmic strains of 2·3 decrease the slopes by 1 and 3 per cent. respectively. As an explanation of this behaviour, it is suggested that deformation causes an increase in the characteristic temperature. 
