Details
| Original language | English |
|---|---|
| Pages (from-to) | 21-24 |
| Number of pages | 4 |
| Journal | Procedia CIRP |
| Volume | 94 |
| Early online date | 15 Sept 2020 |
| Publication status | Published - 2020 |
| Event | 11th CIRP Conference on Photonic Technologies, LANE 2020 - Virtual, Online Duration: 7 Sept 2020 → 10 Sept 2020 |
Abstract
Growing demand for individual and especially complex parts with emphasis on biomedical or lightweight applications enhances the importance of laser powder bed fusion. Magnesium alloys offer both biocompatibility and low density, but feature a very high melting point of oxide layers while the evaporation temperature of pure magnesium is much lower. This impedes adequate part quality and process reproducibility. To weaken this oxide layer and enhance processability, a 2 %-hydrogen-argon-gas atmosphere was investigated. A machine system was modified to the use of the novel inert gas to determine the influence of gas atmosphere on hollow cuboids and solid cubes. While processing a 20.3 % decrease in structure width and 20.6 % reduction in standard deviation of the cuboids was determined. There was no significate influence on relative density of solid cubes although eight of the ten highest density specimen were fabricated with the hydrogen addition.
Keywords
- Additive manufacturing, Hydrogen, Laser powder bed fusion, Magnesium, Magnesium alloys
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Procedia CIRP, Vol. 94, 2020, p. 21-24.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Laser powder bed fusion of WE43 in hydrogen-argon-gas atmosphere
AU - Abel, Arvid
AU - Wessarges, Yvonne
AU - Julmi, Stefan
AU - Hoff, Christian
AU - Hermsdorf, Jörg
AU - Klose, Christian
AU - Maier, Hans Jürgen
AU - Kaierle, Stefan
AU - Overmeyer, Ludger
N1 - Funding Information: The authors gratefully acknowledge the funding by the German Research Foundation (DFG) within the priority program P) (SP 1222 “Materials for dAd e Manufacturing (MATframe)”.
PY - 2020
Y1 - 2020
N2 - Growing demand for individual and especially complex parts with emphasis on biomedical or lightweight applications enhances the importance of laser powder bed fusion. Magnesium alloys offer both biocompatibility and low density, but feature a very high melting point of oxide layers while the evaporation temperature of pure magnesium is much lower. This impedes adequate part quality and process reproducibility. To weaken this oxide layer and enhance processability, a 2 %-hydrogen-argon-gas atmosphere was investigated. A machine system was modified to the use of the novel inert gas to determine the influence of gas atmosphere on hollow cuboids and solid cubes. While processing a 20.3 % decrease in structure width and 20.6 % reduction in standard deviation of the cuboids was determined. There was no significate influence on relative density of solid cubes although eight of the ten highest density specimen were fabricated with the hydrogen addition.
AB - Growing demand for individual and especially complex parts with emphasis on biomedical or lightweight applications enhances the importance of laser powder bed fusion. Magnesium alloys offer both biocompatibility and low density, but feature a very high melting point of oxide layers while the evaporation temperature of pure magnesium is much lower. This impedes adequate part quality and process reproducibility. To weaken this oxide layer and enhance processability, a 2 %-hydrogen-argon-gas atmosphere was investigated. A machine system was modified to the use of the novel inert gas to determine the influence of gas atmosphere on hollow cuboids and solid cubes. While processing a 20.3 % decrease in structure width and 20.6 % reduction in standard deviation of the cuboids was determined. There was no significate influence on relative density of solid cubes although eight of the ten highest density specimen were fabricated with the hydrogen addition.
KW - Additive manufacturing
KW - Hydrogen
KW - Laser powder bed fusion
KW - Magnesium
KW - Magnesium alloys
UR - http://www.scopus.com/inward/record.url?scp=85093361944&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2020.09.005
DO - 10.1016/j.procir.2020.09.005
M3 - Conference article
AN - SCOPUS:85093361944
VL - 94
SP - 21
EP - 24
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 11th CIRP Conference on Photonic Technologies, LANE 2020
Y2 - 7 September 2020 through 10 September 2020
ER -