Hydrogen treatment of titanium based alloys

27th Joint Seminar Development of Materials Science in Research and Education

材料科学;教育

Losertová, M.^1 ; Hartmann, M.^1 ; Schindler, I.^1 ; Drápala, J.^1

VŠB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, 17. listopadu 15, Ostrava

708 33, Czech Republic^1

关键词: Biocompatible alloys;    Deformation behaviour;    High temperature deformation;    Hydrogen effect;    Hydrogen treatments;    Isothermal compression tests;    Thermal deformation;    Titanium-based alloys;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/266/1/012007/pdf
DOI  :  10.1088/1757-899X/266/1/012007

来源: IOP

【 摘 要 】

The positive effect of the hydrogen on hot deformation behaviour at 700 and 750 °C was investigated after thermal hydrogen treatment of Ti6Al4V and Ti26Nb alloys. Comparing the results obtained for the non-hydrogenated and hydrogenated specimens of both alloys, it was found that the hydrogen content as high as 1325 wt. ppm has an obvious benefit effect on high temperature deformation behaviour in the Ti6Al4V alloy by stabilizing beta phase and lowering thermal deformation resistance. In the case of Ti26Nb alloy the hydrogen content of 2572 wt. ppm suppressed stress instabilities during hot compression but slightly increased thermal deformation resistance. The microstructure study was performed before and after the isothermal compression tests on the specimens in hydrogenated as well as in non-hydrogenated condition. The hydrogen amounts in the specimens were measured by means of an analyser LECO RH600.