Spark plasma sintering for high-rate diffusion welding of a UFG titanium alloy PT3V

International Conference on Synthesis and Consolidation of Powder Materials

Nokhrin, A.V.^1 ; Boldin, M.S.^1 ; Lantsev, E.A.^1 ; Vostokov, M.M.^1 ; Gryaznov, M.Yu.^1 ; Kopylov, V.I.^1 ; Chuvil'Deev, V.N.^1

National Research Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod

603950, Russia^1

关键词: Alpha titanium alloy;    Diffusion welding;    High rate;    High strength;    Nonmonotonic;    Ultra-fine grained ( UFG);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/558/1/012029/pdf
DOI  :  10.1088/1757-899X/558/1/012029

来源: IOP

【 摘 要 】

This is the first ever paper to address the prospects of using Spark Plasma Sintering (SPS) for high-rate diffusion welding of a high-strength ultrafine-grained (UFG) α-titanium alloy Ti-5A-2V. The effect of growing diffusion welding intensity in UFG titanium alloys is also described. Welds of a UFG α-titanium alloy Ti-5Al-2V obtained with SPS are characterized by high density, strength, and corrosion resistance. The rate of weld sealing in UFG alloys is shown to be in nonmonotonic (maximum) dependence on the heating rate.