Vlastnosti slitin s jevem tvarové paměti na bázi TiNb

Abstract

The study of microstructure and mechanical properties of Ti22at.% Nb and Ti25at.% Nb alloys were carried out. The experimental material was prepared by plasma melting and heat treated at different temperature conditions. Samples were homogenised at 1100°C for 12 hours in flowing Ar gas and water quenched. The consecutive precipitation aging consisted of solution annealing at 900°C for 1 hour in flowing Ar gas and water quenching followed by heating at different temperatures (200, 400 and 600°C) for 1 hour and quenching. The phase analysis of TiNb alloys was realised using optical and scanning electron microscopies, EDS microanalysis and Vickers microhardness measurement.