29. National Conference on Heat Treatment November 27 – 28, 2024

Behavior of alloyed copper at brazing temperatures

Kříž Antonín - UJEP Ústí nad Labem (Czech Republic)

Alloyed copper (CuCrZr1) is used for the production of rotors of electrical machines. Ag15CuP solder with a brazing temperature of 710 °C is used for brazing. During this temperature exploitation, irreversible structural changes occur, which lead to damage to the rotor during its application. The aim of this paper was to describe the structural and mechanical property changes on successively temperature loaded alloyed copper samples. Different temperature regimes were tested and light and scanning electron microscopy were used to describe the structural changes including the formation of intermetallic phases and the formation of segregation inclusions. EBSD analyses were also used to describe the recrystallization processes of alloyed copper.

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