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Fabrication of nano-TiC reinforced high Nb-TiAl nanocomposites by electron beam melting

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journal contribution
posted on 2021-06-17, 12:59 authored by W Kan, B Chen, H Peng, Y Liang, J Lin
Electron beam melting (EBM) has been successfully applied to fabricate TiC reinforced high Nb-containing TiAl matrix (TiC/Nb-TiAl) nanocomposite. The optimised combination of focus offset and line energy in the melt stage have been developed to achieve a uniformly distributed nano-TiC particles within the TiAl matrix. The EBM TiC/Nb-TiAl nanocomposite has a microhardness of 393 ± 31 HV , that is 24% higher than that for high Nb-TiAl alloy alone. It is interesting to note that the uniformly distributed nano-TiC particles lead to the formation of equiaxed α -phase in TiAl matrix, instead of those commonly observed γ-phase in previous EBM γ-TiAl work. 0.2 2

History

Citation

Materials Letters, Volume 259, 15 January 2020, 126856

Author affiliation

School of Engineering

Version

  • AM (Accepted Manuscript)

Published in

Materials Letters

Volume

259

Pagination

126856

Publisher

Elsevier

issn

0167-577X

eissn

1873-4979

Acceptance date

2019-10-22

Copyright date

2019

Available date

2021-06-17

Language

English

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