Study of the Effect of Quenching Temperature on Structure and Properties of Ti – 19.6Al – 12.4Nb – 1.5V – 0.9Zr – 0.6Mo Alloy

Resumo

A structure, phase composition and properties of Ti – 19.6Al – 12.4Nb – 1.5V – 0.9Zr – 0.6Mo alloy after quenching in water from 650 – 1050°C depending on the initial condition have been studied. Two variants of the initial structure were studied: β-state obtained by quenching from the β-range, and initial hot-rolled O + β + (α₂)-state. A significant difference in structure and properties was determined in the lower range of the quenching temperatures (up to 850°C), and a mild effect of the initial structure was established after quenching from the higher temperature range. It was found that in order to obtain a structure, favorable for cold deformation, quenching in the temperature range from 850 to 900°C should be used, which would allow balancing the effect of the initial structure.