Yuhe Zhang

4D reconstruction of alumina laser melt pools at 25 kHz via operando X-ray multi-projection imaging

Abstract Advancing additive manufacturing, e.g., laser powder-bed fusion (LPBF), requires resolving rapid processes such as melt-pool dynamics and keyhole evolution in 4D (3D + time). Operando X-ray tomography is a state-of-the-art approach for 4D characterization, but its tempor...