Microstructure and microhardness of the Ti15Mo alloy subjected to severe plastic deformation in α+β condition

5th International Conference Recent Trends in Structural Materials

Bartha, K.^1 ; Terynková, A.^1 ; Stráský, J.^1 ; Semenova, I.^2 ; Gatina, S.^2 ; Janeek, M.^1

Department of Physics of Materials, Charles University, Ke Karlovu 5, Prague

121 16, Czech Republic^1

Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, K. Marx street 12, Ufa

450 000, Russia^2

关键词: Alpha phase;    Deformed alloy;    Elevated temperature;    High strength;    Metastable beta-titanium alloys;    Severe plastic deformations;    Solution treated conditions;    Ultra-fine-grained;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/461/1/012004/pdf
DOI  :  10.1088/1757-899X/461/1/012004

来源: IOP

【 摘 要 】

Metastable β-titanium alloys are perspective candidates for use in biomedicine. For that purpose a high strength of these materials is required. The enhanced strength of these alloys can be achieved by subjecting the material to severe plastic deformation. However, due to the limited ductility of the metastable β-titanium alloys, deformation of the alloy in β solution treated condition at room temperature is sometimes inaccessible. In this study a Ti15Mo alloy in a two phase α+β condition was subjected to equal channel angular pressing at elevated temperature of 400°C. The resulting microstructure after N = 4 and 8 ECAP passes consists of deformed β-phase with elongated α-phase particles. Despite the microstructure is not ultra-fine grained the microhardness of the deformed alloy exhibits higher values compared to the non-deformed counterpart.