Affiliation of Author(s):能源与动力学院
Journal:Miner. Met. Mater. Ser.
Abstract:In the paper, the process of Ti6–Al4–V aging phase transition and diffusion bonding was studied by molecular dynamics method. The EAM potential combined with more potential was employed to deal with the interaction between the atoms of Ti–Al–V ternary alloy. The radial distribution function of Ti6–Al4–V and the relative content of different crystal structures were analyzed. The results show that the structural changes of Ti6–Al4–V in the aging phase transition are mainly manifested in the new phase of metastable phase. In the process of diffusion, the titanium atoms near the interface are mainly diffused, and vanadium atomic diffusion is secondary, while aluminum atom is relatively few. Under the same conditions, the diffusion connection width and thermal insulation temperature are in a good linear relationship. In addition, the diffusion coefficient of titanium is exponentially related to the temperature of heat preservation. The simulation results are good agreement with the experiment. © 2019, The Minerals, Metals & Materials Society.
ISSN No.:2367-1181
Translation or Not:no
Date of Publication:2019-01-01
Co-author:Zuo, Yongji,ghd
Correspondence Author:lxg