HIGH-TEMPERATURE BRITTLENESS AND INTERFACIAL SEGREGATION IN TIN BRONZES

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.