Littérature scientifique sur le sujet « Laser powder bedfusion (L-PBF) »
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Articles de revues sur le sujet "Laser powder bedfusion (L-PBF)"
Asnafi, Nader. « Application of Laser-Based Powder Bed Fusion for Direct Metal Tooling ». Metals 11, no 3 (10 mars 2021) : 458. http://dx.doi.org/10.3390/met11030458.
Texte intégralAdegoke, Olutayo, Joel Andersson, Håkan Brodin et Robert Pederson. « Review of Laser Powder Bed Fusion of Gamma-Prime-Strengthened Nickel-Based Superalloys ». Metals 10, no 8 (23 juillet 2020) : 996. http://dx.doi.org/10.3390/met10080996.
Texte intégralLi, Chenguang, Suxia Guo, Zhenxing Zhou, Weiwei Zhou et Naoyuki Nomura. « Powder Fabrication and Laser Powder Bed Fusion of a MoSiBTiC-La2O3 Alloy ». Crystals 13, no 2 (24 janvier 2023) : 215. http://dx.doi.org/10.3390/cryst13020215.
Texte intégralLu, Pan, Zhang Cheng-Lin, Liu Tong, Liu Xin-Yu, Liu Jiang-Lin, Liu Shun, Wang Wen-Hao et Zhang Heng-Hua. « Molten pool structure and temperature flow behavior of green-laser powder bed fusion pure copper ». Materials Research Express 9, no 1 (1 janvier 2022) : 016504. http://dx.doi.org/10.1088/2053-1591/ac327a.
Texte intégralJayasinghe, Sarini, Paolo Paoletti, Chris Sutcliffe, John Dardis, Nick Jones et Peter L. Green. « Automatic quality assessments of laser powder bed fusion builds from photodiode sensor measurements ». Progress in Additive Manufacturing 7, no 2 (7 octobre 2021) : 143–60. http://dx.doi.org/10.1007/s40964-021-00219-w.
Texte intégralAsnafi, Nader. « Tool and Die Making, Surface Treatment, and Repair by Laser-based Additive Processes ». BHM Berg- und Hüttenmännische Monatshefte 166, no 5 (mai 2021) : 225–36. http://dx.doi.org/10.1007/s00501-021-01113-2.
Texte intégralUhlmann, Eckart, et Alexander Mühlenweg. « Parameterentwicklung im L-PBF-Prozess/Parameter development for laser powder bed fusion ». wt Werkstattstechnik online 111, no 07-08 (2021) : 507–12. http://dx.doi.org/10.37544/1436-4980-2021-07-08-39.
Texte intégralLu, Pan, Zhang Cheng-Lin, Liu Tong, Liu Jiang-Lin, Xie Chun-Lin et Zhang Heng-Hua. « Mesoscopic numerical simulation and experimental investigation of laser powder bed fusion AlCu5MnCdVA alloys ». Materials Research Express 8, no 12 (1 décembre 2021) : 126525. http://dx.doi.org/10.1088/2053-1591/ac2b56.
Texte intégralQuinn, Paul, Sinéad M. Uí Mhurchadha, Jim Lawlor et Ramesh Raghavendra. « Development and Validation of Empirical Models to Predict Metal Additively Manufactured Part Density and Surface Roughness from Powder Characteristics ». Materials 15, no 13 (5 juillet 2022) : 4707. http://dx.doi.org/10.3390/ma15134707.
Texte intégralLi, Zheng, Hao Li, Jie Yin, Yan Li, Zhenguo Nie, Xiangyou Li, Deyong You et al. « A Review of Spatter in Laser Powder Bed Fusion Additive Manufacturing : In Situ Detection, Generation, Effects, and Countermeasures ». Micromachines 13, no 8 (22 août 2022) : 1366. http://dx.doi.org/10.3390/mi13081366.
Texte intégralThèses sur le sujet "Laser powder bedfusion (L-PBF)"
Ty, Anthony. « Étude d'un alliage base nickel obtenu par L-PBF et par fonderie pour applications à haute température : relations procédés - microstructures - propriétés mécaniques ». Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSEP045.
Texte intégralThis thesis aims to understand the relationships between the parameters of the Laser Powder Bed Fusion (L-PBF) additive manufacturing process, the material health, the microstructure, and the mechanical properties of NiCrBSi alloy components. To achieve this, the complex microstructure of these alloys is investigated both in the case of an equilibrium structure generated by the casting process and an out-of-equilibrium structure generated by the L-PBF process. For the former case, liquid-solid and solid-solid transformations at equilibrium are analyzed. For the latter case, the manufacturability domain, as well as the relationships between manufacturing parameters, material health, microstructure, and hardness, are described. Additionally, microstructural transformations induced by heat treatments are also studied for both types of microstructures. The additive manufacturing of such an alloy introduces material health issues, including cracking, which could not be avoided. Nevertheless, a high hardness at high temperature and excellent microstructural stability, have been validated
Eriksson, Philip. « Evaluation of mechanical and microstructural properties for laser powder-bed fusion 316L ». Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355882.
Texte intégralSIVO, ANTONIO. « On the Laser Powder Bed Fusion based processing route for hard to weld Nickel Superalloys ». Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2971609.
Texte intégralHögman, Carl. « The effect of stripe width, stripe overlap, gas flow, and scan angle on process stability in Laser Powder Bed Fusion (L-PBF) ». Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-86140.
Texte intégralDet är känt att olika processparametrar erhåller olika materialkvalitéter när de ändras. Några av de vanligaste att variera för att öka materialkvalitén eller öka produktiviteten är lasereffekten, hatch-avståndet, lagertjocklek and skannhastighet. Dessa parametrar påverkar materialkvalitén och är väl undersökta. Denna studie undersöker hur processen påverkas av de mer okända parametrarna skannbredd, överlapp och gasflödet, med målet att utöka kunskapen kring processtabiliteten i additiv tillverkning. Densitetsmätningar och undersökningar i optisk tomografi gjordes för att bestämma påverkan av de sekundära processparametrarnas påverkan på materialdensiteten och processtabiliteten. Densiteten mäts med en vit-ljus interferometer och resultatet från densitetsanalysen visade att de sekundära parametrarna inte påverkade densiteten av de producerade materialet inom intervallen som användes i denna studie. Påverkan av de sekundära parametrarna på processtabiliteten undersöktes med det uppmätta gråvärdet från optisk tomografi. Ett högra gråvärde innebär att temperaturen är högre under en längre period. En ökning av skannbredden sänkte det uppmätta gråvärdet och en ökning av överlappet ökade de uppmätta gråvärdet. För att förstå vad gråvärdet innebär för processen så mättes arean av stänk i ImageJ. En stark korrelation mellan uppmätt area av stänk och uppmätt gråvärde upptäcktes, vilket visades i att det uppmätta gråvärdet var högre när arean av stänk var större. Påverkan av skannvinkeln undersöktes också i optisk tomografi där jämföranden mellan gråvärdet och skannvinkeln gjordes. Resultatet visade att gråvärdet ökar när skannvinkeln är nära vinkelrät mot gasflödets vid höga värden på skannbredden och överlappet.
Lee, Jiwon. « Novel fabrication of Alloy 625 and MCrAlY bond coat by laser powder bed fusion and microstructure control A novel approach to the production of NiCrAlY bond coat onto IN625 superalloy by selective laser melting Influence of heat treatments on microstructure evolution and mechanical properties of Inconel 625 processed by laser powder bed fusion A new observation of strain-induced grain boundary serration and its underlying mechanism in a Ni–20Cr binary model alloy Heat treatments design for superior high-temperature tensile properties of Alloy 625 produced by selective laser melting High temperature oxidation of NiCrAlY coated Alloy 625 manufactured by selective laser melting ». Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2020. http://www.theses.fr/2020EMAC0008.
Texte intégralIn this study, Alloy 625 was fabricated by one of the most commonly used additive manufacturing (AM) methods, laser powder bed fusion (L-PBF), and its mechanical properties were evaluated at various temperatures. The L-PBF fabricated Alloy 625 showed high strength and relatively poor elongation. Thus, some heat treatments were applied to improve its performance. A solid-solution heat treatment with a temperature of more than 1000 °C was applied to the L-PBF Alloy 625, resulting in recrystallization because of high energy stored within the alloy attributed by high density of dislocations. This modified microstructure of the L-PBF Alloy 625 sample showed the required strength under tensile testing at room temperature (higher strength than wrought Alloy 625 and greater elongation than L-PBF as-built alloy). In view of enhancing mechanical properties at high temperature, a grain boundary serration (GBS) heat treatment was specifically designed for L-PBF Alloy 625. Because this was the first attempt to produce GBS in a high-Nb-content alloy, it was necessary to understand its mechanism first. To induce GBS, it is necessary for large solute atoms to move near the grain boundaries (GBs). Therefore, the GBS heat treatment was modified for application to the L-PBF Alloy 625. The specially designed GBS heat treatment successfully induced the zigzag patterns of serrated GBs for the first time. This GBS L-PBF Alloy 625 showed improved high-temperature mechanical properties in terms of increased ductility and elimination of the dynamic strain aging (DSA) effect at elevated temperatures. To further improve the high-temperature property of the L-PBF Alloy 625, NiCrAlY bond coat was applied to the Alloy 625 substrate by the same method (L-PBF) for the first time to improve the efficiency of the production process and increase the resistance to oxidation. Although their different thermal properties led to many trials and errors in the manufacturing of the material, the optimal parameters for applying NiCrAlY bond coat deposition by L-PBF were set and verified to assess the potential for the process to be commercialized. The remelting characteristic of L-PBF induced good metallurgical bonding between the substrate and coating, which indicates good stability. The oxidation behavior of the NiCrAlY-coated Alloy 625 was characterized by thermal gravimetric analysis (TGA) and thermal shock testing; the results indicated that the novel coated material had higher resistance to oxidation than bulk Alloy 625. Therefore, the GBS heat treatment together with efficient NiCrAlY coating can greatly improve the high-temperature mechanical properties of L-PBF manufactured Alloy 625
Massard, Quentin. « Compréhension et maîtrise de la mise en oeuvre en fabrication additive d’aciers à haute teneur en carbone tel que le 100Cr6 par fusion sélective par laser sur lit de poudre ». Electronic Thesis or Diss., Ecully, Ecole centrale de Lyon, 2022. http://www.theses.fr/2022ECDL0024.
Texte intégralNowadays, the production of steel parts by additive manufacturing (AM) is a central topic in the world of industry, including automotive. Indeed, the possibilities offered by additive manufacturing are diverse and numerous (weight reduction, complex shapes, ...). 100Cr6 is a high mechanical performance steel, mainly used for the production of ball bearings, due to its high hardness and fatigue resistance. A processability study of 100Cr6 steel produced by selective laser melting on powder bed was first performed. After having characterized the physical and chemical properties of the material, dense and non-cracked samples were produced through a parametric optimization. A post-treatment cycle was defined and plane tensile tests and rotary bending fatigue tests were performed.In order to understand and control the cracking phenomenon of 100Cr6 when used in L-PBF, a thorough metallurgical study (microhardness, optical imaging, SEM, XRD, EBSD) was conducted. The influence of the use of the heating plate on the formation of Bainite and Martensite and their impact on cracking was highlighted.Finally, a recyclability study of the oxidized 100Cr6 powder was carried out through the use of a radiofrequency plasma spheroidization machine. A powder feed rate in the plasma allowing to regenerate the physical and rheological properties of the powder was defined. A cleaning method to improve the chemical properties of the powder was also proposed
Santos, Gonçalo Edgar Bento dos. « Propagação de fendas por fadiga em titânio Ti6Al4V produzido por SLM para solicitações em modo misto I+II ». Master's thesis, 2020. http://hdl.handle.net/10316/92219.
Texte intégralEste estudo revela-se particularmente interessante devido à variedade de indústrias que utiliza este tipo da liga de titânio Ti6Al4V, desde a indústria aeroespacial, à biomédica e a outras aplicações de engenharia de alto desempenho. Para que esta liga de titânio seja utilizada de forma segura e consciente, é necessário o conhecimento de todas as suas propriedades e comportamentos nas mais diversas situações de aplicação.Este trabalho teve como principal tema a propagação de fendas por fadiga em provetes de titânio Ti6Al4V produzidos por SLM para solicitações em modo I+II. Para o efeito, usaram-se provetes CTS e diferentes ângulos de carregamento, começando no modo I puro para ângulo de carregamento α=0º e passando pelo modo misto I+II para ângulos α=15º, 30º e 45º. Neste estudo foram realizados ensaios de propagação de fendas por fadiga para R=0, de onde resultaram curvas da/dN-K, a análise do fenómeno do fecho de fenda, a comparação de modelos para o cálculo do fator de intensidade de tensões e o estudo da fratografia. Dos ensaios realizados para o modo I puro e para modo misto I+II foi possível aplicar dois métodos diferentes para o cálculo de ∆K_I e ∆K_II em cada um dos casos estudados (α=0º, α=15º, α=30º, α=45º), obtendo-se uma boa correlação entre ambos os métodos. O método proposto nesta dissertação demostrou ser um método válido e com maior simplicidade quando comparado a outros já existentes. Foi possível também verificar que o fecho de fenda foi diminuindo com o aumento do ângulo de carregamento (α), devido à diminuição da componente do carregamento que provoca o modo I de propagação com o aumento do ângulo α. A análise da superfície de fratura revelou poucas diferenças entre os provetes ensaiados, onde foram encontrados defeitos típicos do processo L-PBF (SLM) tais como: porosidade, partículas por fundir e inclusão por contaminação.
This study proves to be particularly interesting due to the variety of industries that use this type of titanium alloy Ti6Al4V, from the aerospace industry, to biomedical and other high performance engineering applications. For this titanium alloy to be used safely and consciously, it is necessary to know all of its properties and behaviors in the most diverse application conditions.This work had as a main theme fatigue crack propagation in titanium Ti6Al4V produced by SLM for loads in mixed mode I+II and its main purpose was the study of fatigue crack propagation in CTS test pieces for diferente loading angles, starting with pure mode I for loading angle α=0º and passing through the mixed mode I+II for loading angles α=15º, 30º e 45º. In this study, fatigue crack propagation tests were performed for R=0, resulting in da/dN-K curves, the analysis of crack closure phenomenom, the models’ comparison for the calulation of the stress intensity factor and the study of fractography. From the tests performed for pure mode I and mixed mode I+II, it was possible to apply two diferent methods for the calculation of ∆K_I e ∆K_II in each of the studied cases (α=0º, α=15º, α=30º, α=45º), obtaining a good correlation between both methods. The proposed method in this dissertation proved to be a valid and simpler method when compared to existing ones. It was also possible to verify that the crack closure was decreasing with the increase of the loading angle (α), due to the decrease of the loading component that causes mode I of propagation with the increase of the angle α. The analysis of the crack surface revealed few diferences between the test specimens, where typical defects of the L-PBF (SLM) process were found, such as: porosity, unmelted particles and contamination inclusion.
Outro - O autor agradece o apoio financeiro fornecido pelo Fundo Europeu de Desenvolvimento Regional (FEDER), através do programa PT2020, no âmbito do Programa Operacional Regional do Centro (CENTRO-01-0145-FEDER-028789) e pela Fundação para a Ciência e a Tecnologia IP/MCTES, através de fundos nacionais (PIDDAC), para a elaboração do presente documento.
Chapitres de livres sur le sujet "Laser powder bedfusion (L-PBF)"
Haase, Fabian, Carsten Siemers, Maximilian Goldapp et Joachim Rösler. « Si-Containing Titanium Alloys for Laser Powder Bed Fusion (PBF-L) ». Dans Proceedings of the 61st Conference of Metallurgists, COM 2022, 343–54. Cham : Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-17425-4_46.
Texte intégralHoppe, Birk, et Sebastian Enk. « Schlieren- und Schattengrafie zur Visualisierung der Schutzgasdynamik im Laser Powder Bed Fusion (L-PBF) ». Dans Rapid.Tech + FabCon 3.D International Hub for Additive Manufacturing : Exhibition + Conference + Networking, 197–210. München : Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.3139/9783446462441.015.
Texte intégralHoppe, Birk, et Sebastian Enk. « Schlieren- und Schattengrafie zur Visualisierung der Schutzgasdynamik im Laser Powder Bed Fusion (L-PBF) ». Dans Rapid.Tech + FabCon 3.D International Hub for Additive Manufacturing : Exhibition + Conference + Networking, 197–210. München, Germany : Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.1007/978-3-446-46244-1_15.
Texte intégralKrakhmalev, Pavel, et Nataliya Kazantseva. « Microstructure of L-PBF alloys ». Dans Fundamentals of Laser Powder Bed Fusion of Metals, 215–43. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-824090-8.00018-4.
Texte intégralYakout, Mostafa, et M. A. Elbestawi. « Insights on Laser Additive Manufacturing of Invar 36 ». Dans Advances in Civil and Industrial Engineering, 71–93. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-4054-1.ch004.
Texte intégralThompson, Scott M., et Nathan B. Crane. « Process Defects in Metal Additive Manufacturing ». Dans Additive Manufacturing Design and Applications, 1–23. ASM International, 2023. http://dx.doi.org/10.31399/asm.hb.v24a.a0006972.
Texte intégralYadroitsev, Igor, et Ina Yadroitsava. « A step-by-step guide to the L-PBF process ». Dans Fundamentals of Laser Powder Bed Fusion of Metals, 39–77. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-824090-8.00026-3.
Texte intégralYeung, Ho. « Methodologies and Implementation of Laser Powder-Bed Fusion Process Control ». Dans Additive Manufacturing Design and Applications, 1–9. ASM International, 2023. http://dx.doi.org/10.31399/asm.hb.v24a.a0006955.
Texte intégralLane, Brandon, et David Deisenroth. « In-Process Thermography of Metal Additive Manufacturing Processes ». Dans Additive Manufacturing Design and Applications, 1–14. ASM International, 2023. http://dx.doi.org/10.31399/asm.hb.v24a.a0006954.
Texte intégralMogale, Ntebogeng, Wallace Matizamhuka et Prince Cobbinah. « Hot Corrosion and Oxidation Behaviour of TiAl Alloys during Fabrication by Laser Powder Bed Additive Manufacturing Process ». Dans Corrosion [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.100345.
Texte intégralActes de conférences sur le sujet "Laser powder bedfusion (L-PBF)"
Batalha, Rodolfo, André Carvalho, Piter Gargarella, Ana Cabral, Paulo Morais et Guiomar Evans. « Laser-Powder Bed Fusion Of Ti-Based Alloys For Biomedical Applications ». Dans Euro Powder Metallurgy 2023 Congress & Exhibition. EPMA, 2023. http://dx.doi.org/10.59499/ep235765159.
Texte intégralSperry, McKay, Annie Busath, Michael Ottesen, Jacob Heslington et Nathan Crane. « Post-Processing and Material Properties of Nylon 12 Prepared by Laser-Powder Bed Fusion ». Dans ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-69053.
Texte intégralGreco, Sebastian, Kevin Gutzeit, Hendrik Hotz, Marc Schmidt, Marco Zimmermann, Benjamin Kirsch et Jan C. Aurich. « Influence of Machine Type and Powder Batch During Laser-Based Powder Bed Fusion (L-PBF) of AISI 316L ». Dans ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-60448.
Texte intégralLopez, Felipe, Paul Witherell et Brandon Lane. « Identifying Uncertainty in Laser Powder Bed Fusion Models ». Dans ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8692.
Texte intégralPapy, K., A. Sova, A. Borbely, J. M. Staerk, J. Favre, Z. Roulon, J. Sijobert et P. Bertrand. « Additive Manufacturing Feasibility of WC-17Co Cermet Parts by Laser Powder Bed Fusion ». Dans ITSC2022. DVS Media GmbH, 2022. http://dx.doi.org/10.31399/asm.cp.itsc2022p0951.
Texte intégralDeirmina, Faraz, Lorenzo Quarzago, Eleonora Bettini, Matthew Ritche, Daniel Butcher, Shahin Mehraban, Nicholas Lavery et Massimo Pellizzari. « Hot Work Tool Steel Tailored for the Laser Powder Bed Fusion Processing ». Dans Euro Powder Metallurgy 2023 Congress & Exhibition. EPMA, 2023. http://dx.doi.org/10.59499/ep235765264.
Texte intégralZhang, Shanshan, Brandon Lane et Kevin Chou. « Powder Thermal Conductivity Measurements in L-PBF Using Powder-Included Build Specimens : Internal Geometry Effect ». Dans ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8475.
Texte intégralAminzadeh, Masoumeh, et Thomas Kurfess. « Layerwise Automated Visual Inspection in Laser Powder-Bed Additive Manufacturing ». Dans ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9393.
Texte intégralYan, Dongqing, Eddie Taewan Lee, Somayeh Pasebani et Zhaoyan Fan. « A Study of the Laser Powder Bed Fusion Manufactured Surface Roughness Prediction and Optimization Based on Artificial Neural Network ». Dans ASME 2023 18th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/msec2023-102011.
Texte intégralMoges, Tesfaye, Paul Witherell et Gaurav Ameta. « On Characterizing Uncertainty Sources in Laser Powder Bed Fusion Additive Manufacturing Models ». Dans ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11727.
Texte intégralRapports d'organisations sur le sujet "Laser powder bedfusion (L-PBF)"
Slattery, Kevin, et Kirk A. Rogers. Internal Boundaries of Metal Additive Manufacturing : Future Process Selection. SAE International, mars 2022. http://dx.doi.org/10.4271/epr2022006.
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