TY - JOUR
T1 - Powder movement rules of laser powder bed fusion additive manufacturing aluminum alloy based on discrete element method
AU - Lu, Pan
AU - Chen-lin, Zhang
AU - Tong, Liu
AU - Liang, Wang
AU - Heng-hua, Zhang
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/7
Y1 - 2024/7
N2 - Laser Powder Bed Fusion (LPBF) is a promising metal additive manufacturing technology based on layer by layer powder spreading, and powder bed uniformity has a great influence on the forming quality. By Discrete Element Method and powder spreading experiment, the interaction and movement between powder were studied during powder spreading, including powder jamming, rebound, splash, eddy, and empty powder area. Additionally, five kinds of powder spreading schemes were explored, and the new process of one-way reciprocating with tri-splint blade was designed to change the motion state of powder spreading from “blade pushing powder” to “blade holding powder.” By increasing the distance between the blade and the working platform form 0 to 20 µm with the distance between the upper surface of the substrate and the working platform 50 µm, defects such as powder splash and empty powder decreased. And the uniform powder bed of aluminum alloy powder was achieved with the new process of one-way reciprocating with tri-splint blade structure.
AB - Laser Powder Bed Fusion (LPBF) is a promising metal additive manufacturing technology based on layer by layer powder spreading, and powder bed uniformity has a great influence on the forming quality. By Discrete Element Method and powder spreading experiment, the interaction and movement between powder were studied during powder spreading, including powder jamming, rebound, splash, eddy, and empty powder area. Additionally, five kinds of powder spreading schemes were explored, and the new process of one-way reciprocating with tri-splint blade was designed to change the motion state of powder spreading from “blade pushing powder” to “blade holding powder.” By increasing the distance between the blade and the working platform form 0 to 20 µm with the distance between the upper surface of the substrate and the working platform 50 µm, defects such as powder splash and empty powder decreased. And the uniform powder bed of aluminum alloy powder was achieved with the new process of one-way reciprocating with tri-splint blade structure.
KW - Al-Cu
KW - Laser powder bed fusion
KW - blade
KW - discrete element
KW - powder spreading
UR - https://www.scopus.com/pages/publications/85199998036
U2 - 10.1177/16878132241264944
DO - 10.1177/16878132241264944
M3 - 文章
AN - SCOPUS:85199998036
SN - 1687-8132
VL - 16
JO - Advances in Mechanical Engineering
JF - Advances in Mechanical Engineering
IS - 7
ER -