Abstract
The structure, phase composition and mechanical properties of (α+β) — titanium alloy solution treated at 850 °C, cold-rolled at the reduction ratio in the range of 0… 45%, followed by ageing at 450, 500, 550 °C for 0.5, 1.5, 3 hours was studied using XRD, microindentation and tensile testing. The influence of strain level at cold rolling and time-temperature parameters of ageing on the formation of structure and phase composition of solution treated and water quenched Ti-3Al-5Mo-4.5V alloy was investigated and discussed in terms of tensile properties and microhardness. The parameters of low temperature thermomechanical treatment (LTMT) of the (α+β) — alloy were proposed to obtain a high-strength state.
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