Experimental investigation of CMT discontinuous wire arc additive manufacturing of Inconel 625

• DOI: 10.1007/s00170-022-09878-7
• Publication Date: 2022-08-15T23:02:59Z
• Authors: Vojtěch Votruba; Ivan Diviš; Lucie Pilsová; Pavel Zeman; Libor Beránek; Jakub Horváth; Jan Smolík
• Keywords: Inconel 625; Inconel; Cladding (metalworking)

Abstract Additive manufacturing (AM) is a progressive technology which holds promise for of heat resistant super alloys. One the most productive methods wire arc additive (WAAM). In this article, an alternative WAAM strategy investigated. Experimental clads and material tests were performed to evaluate properties obtained through cold metal transfer (CMT) discontinuous Inconel 625 alloy. Using modern terminology Fronius Gmbh method called CMT cycle step. The difference that it automatically controlled by welding source. has lower productivity higher consumption shielding gas. However, excels in low input precise cladding comparison with standard continuous WAAM. It enables fabrication finer details even on thin-walled components or sections problematic dissipation. Samples manufactured using also compared samples Two sets thus tested. following performed: (i) metallographic analysis, (ii) x-ray tomography, (iii) SEM (iv) hardness, (v) tensile strength (20 °C, 650 °C) (vi) pin-on-disc °C). results show led improved samples. Ultimate 15% at 20 °C 4% °C. Wear resistance was about two times higher. This paper concludes definitely suitable complex shapes, fine components.