Technological formability of titanic alloys

Light titanic alloys find numerous applications in mechanical engineering. They possess a number of specified properties. A record of loading in time characterizes the pressuring of titanic alloys. The final properties of the product are defined by the deformation structure the product acquires in the process of deformation. This structure influences plasticity and resistance of deformation under loading. To determine the resistance of deformation and plasticity of titanic alloys the automated multicam plastometer of SUSU was used. It was developed under the leadership of professor V. N. Vydrin. The plastometer allows studying ferrous and non-ferrous metals and alloys within a wide range of thermomechanical parameters of metal pressing where the degree of deformation is from 5 to 85 %, deformation speed is from 0.1 to 100 s -1, the temperatures of sample deformation are from 20 to 1350 °C; the number of working cams is 3; the number of drafts by one cam is from 1 to 10, time intervals at fractional loading are from 1 s and more. The technological formability of titanic alloys was investigated in the range of temperatures from 800 to 1000 °C, with an average speed of deformation from 1 to 30 s -1, and with a critical degree of deformation from 0.15 to 0.4. Indicators of plasticity of alloys were defined experimentally. Empirical dependences to calculate the resistance of alloy deformation were obtained. The research results show a different influence of temperature on plasticity of titanic alloys. Alloy VT5-1 has the highest resistance to deformation and alloy 3M possesses the lowest one. The deformation resistance of all the alloys under study at 1000 °C is approximately the same if the deformation and high-speed parameters are identical.