This paper presents preliminary results of Auger electron spectroscopy
performed on fractured specimens of copper and tin bronzes at the tim
e of in situ hot tensile tests. They show interfacial segregation of S
n, P and S, according to the materials and the test temperature. In co
mparing these results and the mechanical behaviour of the materials, w
e discuss the effect of the interfacial segregations on the drop in du
ctility at intermediate temperatures and on its restoration by dynamic
recrystallisation.