Hot deformation behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with acicular microstructure
作者： Gao-feng Liu , Shang-zhou Zhang , Li-qing Chen
DOI: 10.1007/S11771-011-0694-6
关键词:
摘要: The characteristics of hot deformation an α+β titanium alloy Ti-6.5Al-3.5Mo-1.5Zr-0.3Si with acicular microstructure were studied using isothermal compressive tests in a strain rate range 0.01–10 s−1 at 860–1 100 °C. true stress-true curves hot-compressed the region exhibit peak stress followed by continuous flow softening; whereas β region, attains steady-state regime. At 10 and wide temperature range, exhibits plastic instability. According to kinetic equation, apparent activation energies are estimated be about 633 kJ/mol 281 respectively. processing maps show domain globularization process α colony structure dynamic recrystallization 860–960 °C efficiency 60%, 80%.
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