粉末床熔融的多材料铺粉过程中粉末扩散的数值研究

粉末床熔融的多材料铺粉过程中粉末扩散的数值研究

Wang, L. (TU Delft Resources & Recycling)
Li, Erlei (Monash University)
Zhou, Zongyan (Monash University; University of Science and Technology Beijing)
Zhang, Baicheng (University of Science and Technology Beijing)
Yu, Aibing (Monash University)

2023

Powder bed fusion additive manufacturing has been applied to the fabrication of functionally graded materials. A new design that allows the material composition to change along the direction perpendicular to the powder spreading has been reported in the literature. Based on this design, this work examines the quality of the graded spread powder layer with two powders, which have a large difference of density. The results reveal that during the spreading of graded powders, the volume of particles on the heavy powder side is deposited less than that on the light powder side, indicating that heavy particles diffuse to the light powder side. This diffusion is affected by the spreading speed, but not much by the layer gap. Large spreading speed causes more significant deviation. The results also show that particle size affects diffusion, indicating that decreasing the particle size of the heavy powder may be a solution to reduce diffusion. [Figure not available: see fulltext.]

DEM simulation
Functionally graded material
Powder bed fusion additive manufacturing
Powder spreading

http://resolver.tudelft.nl/uuid:3f8cfafc-be8b-4bfe-b683-e0db00d2bfeb

https://doi.org/10.1007/s10409-022-22255-x

2023-07-09

0567-7718

Acta Mechanica Sinica/Lixue Xuebao, 39 (1)

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2023 L. Wang, Erlei Li, Zongyan Zhou, Baicheng Zhang, Aibing Yu