Effective Ti-6Al-4V Powder Recycling in LPBF Additive Manufacturing Considering Powder History
Laser powder bed fusion (LPBF) is an outstanding additive manufacturing (AM) technology that can enable both complicated geometries and desired mechanical properties in high-value components. However, the process reliability and cost have been the obstacles to the extensive industrial adoptions of L...
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| Veröffentlicht in: | Sustainability 2023-11, Vol.15 (21), p.15582 |
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| container_title | Sustainability |
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| creator | Koushik, Tejas Shen, Haopeng Kan, Wen Hao Gao, Mu Yi, Junlan Ma, Chao Lim, Samuel Chao Voon Chiu, Louis Ngai Sum Huang, Aijun |
| description | Laser powder bed fusion (LPBF) is an outstanding additive manufacturing (AM) technology that can enable both complicated geometries and desired mechanical properties in high-value components. However, the process reliability and cost have been the obstacles to the extensive industrial adoptions of LPBF. This work aims to develop a powder recycling procedure to reduce production cost and minimize process uncertainties due to powder degradation. We used a recycle index (R) to reuse Ti-6Al-4V powder through 10 production cycles. Using this recycle index is more reasonable than simply replying on recycle numbers as it incorporates the powder usage history. A recycling procedure with simple virgin powder top-up can effectively mitigate powder degradation and maintain stable powder properties, chemical compositions, and tensile properties. The experimental finding points to a sustainable recycling strategy of Ti alloy powders with minimal material waste and without noticeable detriment to observed mechanical performance through LPBF production cycles. |
| doi_str_mv | 10.3390/su152115582 |
| format | Article |
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However, the process reliability and cost have been the obstacles to the extensive industrial adoptions of LPBF. This work aims to develop a powder recycling procedure to reduce production cost and minimize process uncertainties due to powder degradation. We used a recycle index (R) to reuse Ti-6Al-4V powder through 10 production cycles. Using this recycle index is more reasonable than simply replying on recycle numbers as it incorporates the powder usage history. A recycling procedure with simple virgin powder top-up can effectively mitigate powder degradation and maintain stable powder properties, chemical compositions, and tensile properties. The experimental finding points to a sustainable recycling strategy of Ti alloy powders with minimal material waste and without noticeable detriment to observed mechanical performance through LPBF production cycles.</description><identifier>ISSN: 2071-1050</identifier><identifier>EISSN: 2071-1050</identifier><identifier>DOI: 10.3390/su152115582</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>3D printing ; Additive manufacturing ; Alloys ; Australia ; Carbon ; Ductility ; Germany ; Laser fusion ; Lasers ; Mechanical properties ; Metal fatigue ; Morphology ; Oxidation ; Powder metallurgy ; Powders ; Precipitation hardening ; Raw materials ; Recycling ; Recycling (Waste, etc.) ; Solid solutions ; Solidification ; Sustainability ; Tensile strength ; Titanium alloys</subject><ispartof>Sustainability, 2023-11, Vol.15 (21), p.15582</ispartof><rights>COPYRIGHT 2023 MDPI AG</rights><rights>2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). 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| source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals |
| subjects | 3D printing Additive manufacturing Alloys Australia Carbon Ductility Germany Laser fusion Lasers Mechanical properties Metal fatigue Morphology Oxidation Powder metallurgy Powders Precipitation hardening Raw materials Recycling Recycling (Waste, etc.) Solid solutions Solidification Sustainability Tensile strength Titanium alloys |
| title | Effective Ti-6Al-4V Powder Recycling in LPBF Additive Manufacturing Considering Powder History |
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