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Effect of post-proc...
Effect of post-processing on microstructure and mechanical properties of Alloy 718 fabricated using powder bed fusion additive manufacturing processes
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- Götelid, Sareh (författare)
- Swerim AB, Sweden
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- Ma, Taoran (författare)
- RISE,Tillverkningsprocesser
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- Lyphout, Christophe (författare)
- RISE,Tillverkningsprocesser
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- Vang, Jesper (författare)
- Swerim AB, Sweden
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- Stålnacke, Emil (författare)
- Swerim AB, Sweden
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- Holmberg, Jonas, 1976- (författare)
- RISE,Tillverkningsprocesser
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- Hosseini, Seyed (författare)
- RISE,Tillverkningsprocesser
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- Strondl, Annika (författare)
- Swerim AB, Sweden
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(creator_code:org_t)
- Emerald Group Holdings Ltd. 2021
- 2021
- Engelska.
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Ingår i: Rapid prototyping journal. - : Emerald Group Holdings Ltd.. - 1355-2546 .- 1758-7670. ; 27:9, s. 1617-1632
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Purpose: This study aims to investigate additive manufacturing of nickel-based superalloy IN718 made by powder bed fusion processes: powder bed fusion laser beam (PBF-LB) and powder bed fusion electron beam (PBF-EB). Design/methodology/approach: This work has focused on the influence of building methods and post-fabrication processes on the final part properties, including microstructure, surface quality, residual stresses and mechanical properties. Findings: PBF-LB produced a much smoother surface. Blasting and shot peening (SP) reduced the roughness even more but did not affect the PBF-EB surface finish as much. As-printed PBF-EB parts have low residual stresses in all directions, whereas it was much higher for PBF-LB. However, heat treatment removed the stresses and SP created compressive stresses for samples from both PBF processes. The standard Arcam process parameter for PBF-EB for IN718 is not fully optimized, which leads to porosity and inferior mechanical properties. However, impact toughness after hot isostatic pressing was surprisingly high. Originality/value: The two processes gave different results and also responses to post-treatments, which could be of advantage or disadvantage for different applications. Suggestions for improving the properties of parts produced by each method are presented.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
Nyckelord
- Alloy 718
- Hot isostatic pressing (HIP)
- Mechanical properties
- Powder bed fusion electron beam (PBF-EB)
- Powder bed fusion laser beam (PBF-LB)
- Residual stress
- 3D printers
- Additives
- Fabrication
- Heat treatment
- Hot isostatic pressing
- Laser beams
- Microstructure
- Nickel alloys
- Residual stresses
- Shot peening
- Additive manufacturing process
- Building methods
- Design/methodology/approach
- Microstructure and mechanical properties
- Nickel- based superalloys
- Post-fabrication
- Process parameters
- Surface finishes
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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