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Phase constituent control and correlated properties of titanium aluminide intermetallic alloys through dual-wire arc additive manufacturing

Journal Article


Abstract


  • TiAl intermetallic compounds were deposited using in-situ alloying with the dual-wire arc additive manufacturing method, and their material properties were investigated. The compounds were designed with different phase constituents and microstructure, achieved through adjusting the elemental wire feed rates according to atomic ratios of Ti: Al = 65%: 35%, 55%: 45%, and 45%: 55%, respectively. Single α2-Ti3Al and γ-TiAl phases were obtained with compositions of Ti-35%Al and Ti-55%Al, while Ti-45%Al resulted in the phase composed of γ-TiAl and α2-Ti3Al. Additionally, the influence of phase composition and microstructure on mechanical properties and oxidation behaviour of the fabricated materials were studied and analysed. In conclusion, the phase composition of TiAl intermetallic alloys could be readily controlled using the dual-wire WAAM method and acceptable properties could be obtained.

Publication Date


  • 2019

Citation


  • Wang, J., Pan, Z., Cuiuri, D. & Li, H. (2019). Phase constituent control and correlated properties of titanium aluminide intermetallic alloys through dual-wire arc additive manufacturing. Materials Letters, 242 111-114.

Scopus Eid


  • 2-s2.0-85060933610

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2375

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 111

End Page


  • 114

Volume


  • 242

Place Of Publication


  • Netherlands

Abstract


  • TiAl intermetallic compounds were deposited using in-situ alloying with the dual-wire arc additive manufacturing method, and their material properties were investigated. The compounds were designed with different phase constituents and microstructure, achieved through adjusting the elemental wire feed rates according to atomic ratios of Ti: Al = 65%: 35%, 55%: 45%, and 45%: 55%, respectively. Single α2-Ti3Al and γ-TiAl phases were obtained with compositions of Ti-35%Al and Ti-55%Al, while Ti-45%Al resulted in the phase composed of γ-TiAl and α2-Ti3Al. Additionally, the influence of phase composition and microstructure on mechanical properties and oxidation behaviour of the fabricated materials were studied and analysed. In conclusion, the phase composition of TiAl intermetallic alloys could be readily controlled using the dual-wire WAAM method and acceptable properties could be obtained.

Publication Date


  • 2019

Citation


  • Wang, J., Pan, Z., Cuiuri, D. & Li, H. (2019). Phase constituent control and correlated properties of titanium aluminide intermetallic alloys through dual-wire arc additive manufacturing. Materials Letters, 242 111-114.

Scopus Eid


  • 2-s2.0-85060933610

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/2375

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 111

End Page


  • 114

Volume


  • 242

Place Of Publication


  • Netherlands