Roya Jafari and Beitallah Eghbali, Experimental investigation on the intermetallic growth behavior during post deformation annealing in multilayer Ti/Al/Nb composite interfaces, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2263-9
Cite this article as:
Roya Jafari and Beitallah Eghbali, Experimental investigation on the intermetallic growth behavior during post deformation annealing in multilayer Ti/Al/Nb composite interfaces, Int. J. Miner. Metall. Mater.,(2021). https://doi.org/10.1007/s12613-021-2263-9
Research Article

Experimental investigation on the intermetallic growth behavior during post deformation annealing in multilayer Ti/Al/Nb composite interfaces

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  • Received: 5 August 2020Revised: 20 January 2021Accepted: 26 January 2021Available online: 2 February 2021
  • In the present research, the tri-metal Ti-Al-Nb composites were processed through three procedures: hot pressing, rolling, and hot pressing, followed by subsequent rolling. The fabricated composites were then subjected to annealing at 600, 625, and 650 ºC temperatures at different times. Microstructure observation at the interfaces reveals that the increase in plastic deformation strain significantly affects TiAl3 intermetallic layers’ evolution and accelerates the layers’ growth. On the contrary, the amount of applied strain does not significantly affect the evolution of the NbAl3 intermetallic layer thickness. It was also found that Al and Ti atoms’ diffusion has occurred throughout the TiAl3 layer, but only Al atoms diffuse through the NbAl3 layer. The slow growth rate of the NbAl3 intermetallic layer is due to the lack of diffusion of Nb atoms and the high activation energy of Al atoms’ reaction with Nb atoms.
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