抄録
Compressive strength of β-Titanium alloy (Ti-15V-3Cr-3Sn-3Al) has been investigated in the wide temperature range of 77 to 673K and at strain rates from 10-4 to 2×103S-1. The stress-strain relations are influenced by the change of temperature arizing from the heat conversion of plastic work, while almost independent of the temperature and the strain rate histories. The thermal component of the stress can be uniquely determined by the Larson-Millar parameter, and the athermal component is a function of strain only. The thermally activated process concept gives a whole understanding of the present experimental results by taking account of the adiabatic heating effect at high strain rates of more than 102S-1.
