Microstructure, transformation temperatures, hardness and magnetic properties of Co36.4+xNi33.3−xGa30.3 ferromagnetic SMA

Microstructure, martensitic transformation temperatures, hardness, and magnetic properties have been studied in Co-Ni-Ga alloys for different compositions of Co and Ni. Hardness, transformation temperatures and thermal hysteresis show a decrease with Co content. On the contrary, maximal magnetization, and magnetic hysteresis both grow with cobalt composition.