Influence of assisted longitudinal magnetic field on the microstructure and mechanical properties of ER2319 aluminium alloy parts fabricated by wire and arc additive manufacturing

Abstract

The deposit morphology, microstructure, and mechanical properties of wire and arc additive manufacturing (WAAM) of ER2319 aluminium alloy with and without assisted longitudinal magnetic field (ALMF) were investigated comprehensively and comparatively in this study. The results showed that the ALMF improved the surface forming accuracy slightly, and effectively promoted the equiaxed transformation of grains. Simultaneously, the introduction of ALMF is beneficial to improving the morphology and distribution of the strengthening phase and reducing the tendency of intergranular corrosion caused by the segregation of Cu elements along the grain boundaries. Moreover, ALMF can remarkably reduce the generation rate of large pores, thereby effectively improving the tensile strength of the deposits and reducing the anisotropy of mechanical properties.

Recent progress in process, structure, properties, and performance in additive manufacturing

“…The special issue contains contributions on the major variants of AM including laser DED [6,9,18,24], gas metal arc DED [7,[10][11][12][13][14]16,19,[21][22][23], laser PBF [8], cold spray [17], laser-arc hybrid manufacturing [20], and fused deposition modelling [15]. Chaurasia et al [22] presented a novel approach to real-time monitoring of melt pool cross-sectional asymmetry during laser PBF using a two-color thermal camera.…”

“…AM processes with an external magnetic field and an auxiliary induction heating were investigated by Zhang et al [12] and Prasad et al [13], respectively. Zhang et al [12] studied the deposit morphology, microstructure, and mechanical properties of ER2319 aluminum alloy parts made by gas metal arc DED with and without a magnetic field. The magnetic field was found to improve the surface quality, promote the formation of equiaxed grains, and reduce pores.…”

“…This special issue includes all aforementioned trends of progress through 19 original research articles [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The editors of STWJ invited active researchers from the AM and welding communities to contribute to this special issue.…”

Variations of the improved characteristics on microstructure and mechanical properties of Al–Cu alloy fabricated by magnetic field assisted wire-arc additive manufacturing after heat-treated

“…https://doi.org/10.1080/13621718. 2023.2236358 the special energy field to assist WAAM [16], etc. And the introduction of the magnetic field is one kind of special energy field-assisted method.…”

“…There have been some methods to achieve this point, including synchronous milling [12], synchronous interlayer rolling [13], synchronous interlayer hammering [14], heat treatment [15], as well as the introduction of the special energy field to assist WAAM [16], etc. And the introduction of the magnetic field is one kind of special energy field-assisted method.…”