Influences of postproduction heat treatment on Fe3Al-based iron aluminide fabricated using the wire-arc additive manufacturing process

Authors

Chen Shen, University of WollongongFollow
Zengxi Stephen Pan, University of WollongongFollow
Dominic Cuiuri, University of WollongongFollow
Stephen van Duin, University of WollongongFollow
Dongzhi Luo, University of WollongongFollow
Bosheng Dong, University of WollongongFollow
Hui Jun Li, University of WollongongFollow

RIS ID

125540

Publication Details

Shen, C., Pan, Z., Cuiuri, D., van Duin, S., Luo, D., Dong, B. & Li, H. (2018). Influences of postproduction heat treatment on Fe3Al-based iron aluminide fabricated using the wire-arc additive manufacturing process. International Journal of Advanced Manufacturing Technology, 97 (1-4), 335-344.

Abstract

In this paper, Fe 3 Al-based alloy with a designed 30 at% Al content is fabricated using an innovative wire-arc additive manufacturing process. In order to investigate the influences of postproduction heat treatments on the additively manufactured alloy, three postproduction heat treatment methods were applied to the as-fabricated material. The morphologies, phase constituents, and mechanical properties of samples produced by the different heat treatments were characterized and analyzed in detail. According to the results, the applied heat treatments can considerably change the microstructure and mechanical properties of the as-fabricated Fe 3 Al-based alloy. Also, the hardness and tensile properties of Fe 3 Al-based alloy are found relevant to the Al-rich precipitates observed in the morphologies, which are generated by the additional thermal processes on the homogenized Fe 3 Al-based alloy.