Modified cellular automaton simulation of metal additive manufacturing

Kubo, Jun; Koizumi, Yuichiro; Ishimoto, Takuya et al.

Materials Transactions, 2021, 62(6), 864-870

Number of Access:424（2025-07-18 09:49 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89892

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Title
Modified cellular automaton simulation of metal additive manufacturing
Creator
CreatorName
Kubo, Jun
NRID
1000010322174 1000010322174
ORCID
0000-0001-7061-7135 0000-0001-7061-7135
researchmap permalink
YuichiroKoizumi YuichiroKoizumi
Scopus Author ID
57202772340 57202772340
CreatorName
Koizumi, Yuichiro
NRID
1000050508835 1000050508835
ORCID
0000-0003-0081-0591 0000-0003-0081-0591
researchmap permalink
i_taku i_taku
Scopus Author ID
35310484700 35310484700
CreatorName
Ishimoto, Takuya
NRID
1000030243182 1000030243182
ORCID
0000-0001-8052-1698 0000-0001-8052-1698
researchmap permalink
read0013987 read0013987
Scopus Author ID
7403896013 7403896013
CreatorName
Nakano, Takayoshi
Subject
Additive manufacturing
Crystallographic texture
Melt pool
Simulation
Description
Kubo J., Koizumi Y., Ishimoto T., et al. Modified cellular automaton simulation of metal additive manufacturing. Materials Transactions 62, 864 (2021); https://doi.org/10.2320/matertrans.MT-M2021009.
Abstract
Metal additive manufacturing (AM) technologies are attracting attentions not only as a fabrication process of complicated threedimensional parts but also as microstructure controlling processes. In powder bed fusion (PBF)-type AM, crystallographic texture can be controlled by scanning strategies of energy beam. To optimize microstructures, computer simulations for predicting microstructures play very important roles. In this work, we have developed simulation programs to explain the mechanism of the crystal orientation control. First, we simulated the shape of melt pool by analyzing the heat transfer using apparent heat conductivity when the penetration of laser beam through keyholes was taken into consideration because of the evaporation and accompanying convections. It was assumed that the primary crystal growth direction can be determined by the temperature gradient, and the crystals grow keeping the growth direction as generally recognized. The shapes of simulated melt pools agree well with experimental observations. The modified cellular automaton simulations successfully reproduced two typical textures with different preferential orientations along the building directions of (100) and (110) when the bidirectional scanning with and without a rotation of 90°, respectively, was accomplished between the layers.
Publisher
The Japan Institute of Metals and Materials
Source Title
Materials Transactions
Volume (Issue)
62(6)
Page
864-870
Date of Issued
2021-06-01
Language
English
Handle URL
https://hdl.handle.net/11094/89892
PISSN
13459678
eISSN
13475320
NCID
AA1151294X
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.2320/matertrans.MT-M2021009
Access Rights
open access
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article