Influence of heat treatment on resistance to electrochemical corrosion of the strain-hardened strips made of the Ni3Al phase based alloys

The paper presents results of the electrochemical corrosion resistance tests of the fine-crystalline strips made of the Ni3Al intermetallic phase base alloys with the chemical composition in % at.: Ni – 22.13Al – 0.26Zr – 0.1B. Subject of the analysis was a material in the state of strain hardening to 50% deformation, as well as after one-hour annealing in the 600, 700, 800 and 1100 °C temperatures. An influence of the heat treatment temperature at the obtained electrochemical parameter values and correlation of the changes with recovery and recrystallisation processes observed in the material have been found.