TY - JOUR
T1 - The effect of metal EOS 316L stainless steel additive manufacturing powder recycling on part characteristics and powder reusability
AU - Quinn, P.
AU - O’Halloran, S.
AU - Lawlor, J.
AU - Raghavendra, R.
N1 - Funding Information:
This work was supported by the Irish Manufacturing Research (IMR) [N/A]. The authors would like to thank Irish Manufacturing Research (IMR) for their funding and support of this research project.
Publisher Copyright:
© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
PY - 2019/4/3
Y1 - 2019/4/3
N2 - Direct metal laser sintering (DMLS) is a powder bed fusion (PBF) process commonly used within the medical device and aerospace industries to fabricate high value, complex components. Powder material used in the DMLS process can be costly and it is rare for a single build to require a full batch of powder. The un-melted powder, which differs in particle size and morphology from virgin powder, is often recycled for further builds. This work presents a study of the effects that recycling a stainless steel metal powder used in the DMLS process has on finished parts. Hence, in this paper, powder material characteristics, such as particle size, particle morphology and bulk chemical composition have been monitored throughout the recycling process. An analysis of parts manufactured via DMLS on an EOS M280 demonstrate the negative effect of powder recycling on part quality in terms of surface roughness, part density, hardness and dimensional accuracy. Results from this research provide an insight to the effect that recycling AM powders has on the powder characteristics and on the quality of the parts produced.
AB - Direct metal laser sintering (DMLS) is a powder bed fusion (PBF) process commonly used within the medical device and aerospace industries to fabricate high value, complex components. Powder material used in the DMLS process can be costly and it is rare for a single build to require a full batch of powder. The un-melted powder, which differs in particle size and morphology from virgin powder, is often recycled for further builds. This work presents a study of the effects that recycling a stainless steel metal powder used in the DMLS process has on finished parts. Hence, in this paper, powder material characteristics, such as particle size, particle morphology and bulk chemical composition have been monitored throughout the recycling process. An analysis of parts manufactured via DMLS on an EOS M280 demonstrate the negative effect of powder recycling on part quality in terms of surface roughness, part density, hardness and dimensional accuracy. Results from this research provide an insight to the effect that recycling AM powders has on the powder characteristics and on the quality of the parts produced.
KW - Additive manufacturing
KW - direct metal laser sintering
KW - metal powder recycling
KW - powder bed fusion
KW - powder characteristics
UR - http://www.scopus.com/inward/record.url?scp=85063876269&partnerID=8YFLogxK
U2 - 10.1080/2374068X.2019.1594602
DO - 10.1080/2374068X.2019.1594602
M3 - Article
AN - SCOPUS:85063876269
SN - 2374-068X
VL - 5
SP - 348
EP - 359
JO - Advances in Materials and Processing Technologies
JF - Advances in Materials and Processing Technologies
IS - 2
ER -