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Through the combination of in-situ alloying and additive manufacturing with gas tungsten arc welding, a new approach to fabricating titanium aluminide alloys is proposed. This innovative and low cost process has many similarities to multipass welding. It has been a generally accepted practice to maintain a specified interpass temperature when multipass welding many different alloys to prevent defects...
A wire-arc additive manufacturing (WAAM) system is used to fabricate iron rich Fe–Al intermetallics with 25at% aluminum content. The alloy is produced in situ through controlled addition of the elemental iron and aluminum components into the welding process. The properties of the fabricated material are assessed using optical microstructure analysis, hardness testing, tensile testing, X-ray diffraction...
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