粉末床熔融的多材料铺粉过程中粉末扩散的数值研究

Journal article (2023)

Authors

L. Wang Resources & Recycling - CEG
Erlei Li Monash University
Zongyan Zhou Monash University, University of Science and Technology Beijing
Baicheng Zhang University of Science and Technology Beijing
Aibing Yu Monash University
Research Group
Resources & Recycling (CEG) (TU Delft)
Copyright: © 2023 L. Wang, Erlei Li, Zongyan Zhou, Baicheng Zhang, Aibing Yu
DOI
help_outline
https://doi.org/10.1007/s10409-022-22255-x
DEM simulation Functionally graded material Powder spreading Powder bed fusion additive manufacturing
More Info
expand_more

Published Date

2023

Language

Chinese

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Resources & Recycling

Abstract

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.]