High-energy density beam processes for welding, including laser beam welding and
electron beam welding, are essential processes in many industries and provide unique …

Laser welding has been widely used in various industry fields. In order to further alter and
broaden its applicability, a novel technology of laser welding under vacuum is introduced …

A powder-scale multi-physics model is developed to investigate the keyhole dynamics and
porosity in products fabricated by selective laser melting (SLM) under the sub-atmospheric …

In space additive manufacturing, the operating environment will experience close to zero
gravity. Therefore, it is necessary to understand the gravity effects in laser metal deposition …

In order to better understand the local evaporation phenomena of keyhole wall, vapor plume
swing above the keyhole and ambient gas entrapment into the porosity defects, the 3D time …

Beam oscillation in the laser welding process has demonstrated numerous advantages in
suppressing spatters, eliminating pores, and reducing gap sensitivity, particularly for joining …

The physical understanding of electron beam welding (EBW) and prediction of the weld
microstructure are valuable but challenging. In this work, a multi-physics modeling …

Abstract 316L stainless steel (316L) is commonly used in wide range of applications
because of its strength and corrosion resistance. An increase in its strength is possible when …

An alternating magnetic field was designed to increase weld depth of laser-MIG hybrid
welded 316 stainless steel joint. The influencing mechanism of alternating magnetic field on …

The currently available high-power laser presents significant opportunities for welding of
thick section components in single-pass. However, weld defects frequently occur and depth …