The Influence of Parameters of Heat Treatment on Thickens and Roughness of Oxide Layers on Titanium Alloy Ti6A14V

The paper presents the affect of temperature and time of annealing on the thickness of the obtained oxide layer on the surface of titanium alloy Ti6A14V and also on the geometry of the layer. The studies on seven samples where they were determined from 1 to 7 were carried out. Sample 1 was a reference sample of material that was subjected to the following parameters: for the sample 2 the temperature 350 degrees C in 5 hours, for the samples 3 and 4 450 degrees C and in sequence 1 and 10 hours, for the sample 5 and 6 550 degrees C and in sequence 1 and 10 hours and for the sample 7 temperature 650 degrees C in 5 hours. Studies have shown that thicker oxide layers with less surface development form on samples occurred after longer heat treatment and higher temperatures. Thanks to these dependencies it is possible to maneuver the time and temperature of the treatment interchangeably, eg. by raising the temperature of annealing time can be shortened to obtain similar parameters of the roughness profile as for the sample processed at a lower temperature in a longer time.