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Abstract
In this work, double wire arc addictive manufacturing (WAAM) of Fe3Al parts was implemented and high-temperature properties of produced structures were studied. In-situ fabrication of several wall-shaped intermetallic structures was performed using a dual wire feeding system, designed for unsymmetrical transfer of Fe- and Al-based wires. Mechanical properties, such as strength and ductility, as well as phase composition and microstructure of produced material were studied. Enhanced ductility at room temperatures and superplastic behavior at high temperatures were revealed by tensile tests. Furthermore, anomaly in temperature dependance of ultimate tensile strength has been revealed and discussed. Wear properties analysis demonstrated higher friction coefficient with lower wear rate for Fe3Al than for stainless steel.
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