Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Joni Reijonen"'
Publikováno v:
Metals, Vol 12, Iss 11, p 1894 (2022)
Laser powder bed fusion is an additive manufacturing method that is based on melting and solidification of powder material. Due to the local heating above the melting point, thermal stresses are usually formed in the final part. Mitigation of residua
Externí odkaz:
https://doaj.org/article/44baa535e650421282ec000f911f373b
Autor:
Joni Reijonen, Roy Björkstrand, Tuomas Riipinen, Zaiqing Que, Sini Metsä-Kortelainen, Mika Salmi
Publikováno v:
Materials & Design, Vol 204, Iss , Pp 109684- (2021)
Laser powder bed fusion additive manufacturing is used for demanding applications in industries such as aerospace. However, machine-specific, optimized process conditions and parameters are required to assure consistent part quality. In addition, dif
Externí odkaz:
https://doaj.org/article/a5a06450d89c4daa9fd0efe42b3cadf4
Publikováno v:
Yang, H, Reijonen, J & Revuelta, A 2023, ' Multi-resolution Quality Inspection of Layerwise Builds for Metal 3D Printer-and-Scanner ', Journal of Manufacturing Science and Engineering, vol. 145, no. 10, 101004 . https://doi.org/10.1115/1.4057013
Automated optical inspection (AOI) is increasingly advocated for in situ quality monitoring of additive manufacturing (AM) processes. The availability of layerwise imaging data improves the information visibility during fabrication processes and is t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f0a16f0b69c52b05f26085f42de8b3d7
https://doi.org/10.1115/1.4057013
https://doi.org/10.1115/1.4057013
Autor:
Olivier Tosoni, Elisa Borges Mendonça, Joni Reijonen, Atte Antikainen, Lukas Schäfer, Stefan Riegg, Oliver Gutfleisch
Publikováno v:
Tosoni, O, Borges Mendonça, E, Reijonen, J, Antikainen, A, Schäfer, L, Riegg, S & Gutfleisch, O 2023, ' High-coercivity copper-rich Nd-Fe-B magnets by powder bed fusion using laser beam method ', Additive Manufacturing, vol. 64, 103426 . https://doi.org/10.1016/j.addma.2023.103426
Additive Manufacturing
Additive Manufacturing, 2023, 64, pp.103426. ⟨10.1016/j.addma.2023.103426⟩
Additive Manufacturing
Additive Manufacturing, 2023, 64, pp.103426. ⟨10.1016/j.addma.2023.103426⟩
International audience; Additive manufacturing (AM) is an attractive processing route to make efficient use of rare-earths in systems containing complex-shaped rare-earth based magnets. Powder bed fusion using laser beam (PBF-LB) is one of the most p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f21ecd34c4e4daf59520785ea3700bb
https://doi.org/10.1016/j.addma.2023.103426
https://doi.org/10.1016/j.addma.2023.103426
Publikováno v:
Reijonen, J, Antikainen, A, Lagerbom, J, Lindroos, M, Pinomaa, T & Lindroos, T 2022, Laser Powder Bed Fusion Of High Carbon Tool Steels . in World PM2022 Congress Proceedings . European Powder Metallurgy Association (EPMA), World PM2022 Congress & Exhibition, Lyon, France, 9/10/22 .
VTT Technical Research Centre of Finland-PURE
VTT Technical Research Centre of Finland-PURE
Tool steels are martensitic steels alloyed with carbide forming elements, thus having high strength, hardness and wear resistance. These characteristics, however, make them costly materials to shape into complex geometries. Laser powder bed fusion (P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::138733fffa8d22d92f8e3c2b1f513acc
https://cris.vtt.fi/en/publications/d88f019b-6b0b-42c0-85cf-31ec1e537ed2
https://cris.vtt.fi/en/publications/d88f019b-6b0b-42c0-85cf-31ec1e537ed2
Publikováno v:
Antikainen, A, Reijonen, J, Lagerbom, J, Lindroos, M, Pinomaa, T & Lindroos, T 2022, ' Single-Track Laser Scanning as a Method for Evaluating Printability: The Effect of Substrate Heat Treatment on Melt Pool Geometry and Cracking in Medium Carbon Tool Steel ', Journal of Materials Engineering and Performance, vol. 31, no. 10, pp. 8418-8432 . https://doi.org/10.1007/s11665-022-06826-0
Nearly all commercially available alloys have been developed for manufacturing processes other than additive manufacturing. Most of those alloys are not suitable for laser powder bed fusion (L-PBF) processing due to the non-weldable nature of the all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d43232c5e561ab2251002d90266ae004
https://cris.vtt.fi/en/publications/7e5a1922-dfff-4761-8f6a-908b4c0d66a0
https://cris.vtt.fi/en/publications/7e5a1922-dfff-4761-8f6a-908b4c0d66a0
Autor:
Matti Lindroos, Tatu Pinomaa, Anssi Laukkanen, Atte Antikainen, Juha Lagerbom, Joni Reijonen, Tomi Lindroos, Tom Andersson
Publikováno v:
Lindroos, M, Pinomaa, T, Laukkanen, A, Antikainen, A, Lagerbom, J, Reijonen, J, Lindroos, T & Andersson, T 2022, Opportunities of Physics-based Multi-Scale Modeling Tools in assessing intra-grain heterogeneities, polycrystal properties and residual stresses of AM metals . in World PM2022 Congress Proceedings . European Powder Metallurgy Association (EPMA), World PM2022 Congress & Exhibition, Lyon, France, 9/10/22 .
VTT Technical Research Centre of Finland-PURE
VTT Technical Research Centre of Finland-PURE
Microstructure is the origin of the properties and performance for additively manufactured metals. Rapid solidification enable the formation of various grain/phase structures as well as solute segregation and initial dislocation structures that all c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::119b8cea6221155fac17886a8501b8b8
https://cris.vtt.fi/en/publications/8f957e64-4008-4a89-bee3-0fe115f9fefb
https://cris.vtt.fi/en/publications/8f957e64-4008-4a89-bee3-0fe115f9fefb
Autor:
Sini Metsä-Kortelainen, Joni Reijonen
Publikováno v:
Metsä-Kortelainen, S & Reijonen, J 2021, ' Varaosien digitalisoinnilla säästöjä ja tehokkuutta ', Promaint, no. 1, pp. 38-41 .
VTT Technical Research Centre of Finland-PURE
VTT Technical Research Centre of Finland-PURE
Monet yritykset ovat jo onnistuneesti kokeilleet varaosien valmistamista 3D-tulostamalla. Laajempi varaosien digitalisointi on vielä tulevaisuutta, mutta ei kovin kauan, sillä ympäri maailman on kehitteillä työkaluja ja palveluita yritysten käy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a668b1a6af3e7a905eb2f2bf47d19513
https://cris.vtt.fi/en/publications/a4a2582a-8a39-40d9-ae2d-4c2310e51654
https://cris.vtt.fi/en/publications/a4a2582a-8a39-40d9-ae2d-4c2310e51654
Autor:
Stefan Riegg, Joni Reijonen, Olivier Tosoni, Jürgen Gassmann, Konstantin Skokov, Olivier Gutfleisch
Publikováno v:
Riegg, S, Reijonen, J, Tosoni, O, Gassmann, J, Skokov, K & Gutfleisch, O 2020, ' Nd-Fe-B based permanent magnetic materials design for additive manufacturing: 3DREMAG ', 65th Annual Conference on Magnetism and Magnetic Materials (MMM2020), 2/11/20-6/11/20 .
VTT Technical Research Centre of Finland-PURE
VTT Technical Research Centre of Finland-PURE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::e2e2b0d434d943863626b7e057252f40
https://cris.vtt.fi/en/publications/af07b85c-c068-483f-ba0a-39a22c9edcc3
https://cris.vtt.fi/en/publications/af07b85c-c068-483f-ba0a-39a22c9edcc3
Autor:
Tom Andersson, Tatu Pinomaa, Joni Reijonen, Atte Antikainen, Anssi Laukkanen, Juha Lagerbom, Tomi Lindroos, Matti Lindroos
Publikováno v:
Lindroos, M, Pinomaa, T, Antikainen, A, Lagerbom, J, Reijonen, J, Lindroos, T, Andersson, T & Laukkanen, A 2021, ' Micromechanical modeling approach to single track deformation, phase transformation and residual stress evolution during selective laser melting using crystal plasticity ', Additive Manufacturing, vol. 38, 101819 . https://doi.org/10.1016/j.addma.2020.101819
Single track scanning is a widely used method to evaluate the effects of rapid solidification of metals and to analyze their printability. Microstructure level stresses play a dominant role in causing material failure during deposition or poor perfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2890afc9f1380b2dee814e77c55fa6f
https://doi.org/10.1016/j.addma.2020.101819
https://doi.org/10.1016/j.addma.2020.101819