Some aspects of the dependence of the flow curve of commercially pure titanium on the forming temperature and the strain rate

This paper reports the results of the ring and the solid-compression test carried out on commercially pure titanium in the temperature range of from 303 to 573 K and the strain-rate range of from 0.07 to 32 s-1. Analysis of flow-stress data and microstructural studies on the upset samples were undertaken to predict the optimal working conditions of strain rate and temperature so as to be able to obtain the full advantage of adiabatic heating in reducing the flow stress of the material. For the range of conditions explored, the results show that working at 303 K and 32 s-1 is optimal for the effective utilisation of adiabatic heating in reducing the flow stress. © 1990.