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Magnetic properties of as-built and heat treated M789 and M300 maraging steels produced via laser powder bed fusion KU Leuven

Mirko Sinico, Brecht Van Hooreweder
This paper reports on the magnetic characteristics of maraging steels additively produced through laser powder bed fusion with a focus on two specific grades, namely M789 and M300. Magnetic material properties, including magnetization curve, magnetic hysteresis, and loss, are systematically examined for both grades. The effect of a solution annealing plus aging heat treatment is explored to determine how these properties differ between the ...

Enhancing fatigue life of as-printed martensitic M789 steel produced by laser powder bed fusion via in-process surface integrity improvement and phase change induced compressive residual stresses KU Leuven

Daniel Ordnung, Thibault Mertens, Mirko Sinico, Guichuan Li, Bey Vrancken, Brecht Van Hooreweder
The fatigue strength of metal components produced by Laser Powder Bed Fusion (LPBF) is often impaired by their limited surface quality, and surface finishing post-processing steps are typically required to improve the fatigue behavior. However, the complex geometries of LPBF parts sometimes inhibit conventional surface finishing. Recently, Incremental Dual Laser PBF (IDLPBF) was introduced as a strategy for in-process quality improvement of ...

Facile Fabrication of Flexible and High-Performing Thermoelectrics by Direct Laser Printing on Plastic Foil KU Leuven

Yuan Tian, Heyi Xia, Hasan Emre Baysal, Sebastian Meyers, Tzu-Yi Yu, Souhaila Nider, Berfu Göksel, Francisco Molina Lopez
The emerging fields of wearables and the Internet of Things introduce the need for electronics and power sources with unconventional form factors: large area, customizable shape, and flexibility. Thermoelectric (TE) generators can power those systems by converting abundant waste heat into electricity, whereas the versatility of additive manufacturing suits heterogeneous form factors. Here, additive manufacturing of high-performing flexible TEs ...