Relevant bibliographies by topics / Direct Metal Laser Sintering technology

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Direct Metal Laser Sintering technology'

Author: Grafiati
Published: 5 June 2025
Last updated: 25 June 2025

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Journal articles on the topic "Direct Metal Laser Sintering technology"

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Venkatesh, K. Vijay, and V. Vidyashree Nandini. "Direct Metal Laser Sintering: A Digitised Metal Casting Technology." Journal of Indian Prosthodontic Society 13, no. 4 (2013): 389–92. http://dx.doi.org/10.1007/s13191-013-0256-8.

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Jin, Yong Ping, and Ming Hu. "Direct Rapid Manufacturing Technology with Laser for Metal Parts." Advanced Materials Research 328-330 (September 2011): 520–23. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.520.

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Directly driven by CAD model, based on principle of discrete-superposition, rapid prototyping technology is the generic terms of rapid manufacturing 3-dimensional physical entities with any complex shape. One of its main development trends is direct rapid manufacturing for metal parts. Up to now, there are many methods utilizing laser beam containing selective laser melting, selective laser sintering and laser engineered net shaping. Research and development of these means for direct rapid metal manufacturing are presented in this paper. Digital direct rapid manufacturing for metal parts represents development direction of advanced manufacturing technology.
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Mierzejewska, Ż. A. "Process Optimization Variables for Direct Metal Laser Sintering." Advances in Materials Science 15, no. 4 (2015): 38–51. http://dx.doi.org/10.1515/adms-2015-0021.

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AbstractManufacturing is crucial to creation of wealth and provision of quality of life. Manufacturing covers numerous aspects from systems design and organization, technology and logistics, operational planning and control. The study of manufacturing technology is usually classified into conventional and non-conventional processes. As it is well known, the term "rapid prototyping" refers to a number of different but related technologies that can be used for building very complex physical models and prototype parts directly from 3D CAD model. Among these technologies are selective laser sintering (SLS) and direct metal laser sintering (DMLS). RP technologies can use wide range of materials which gives possibility for their application in different fields. RP has primary been developed for manufacturing industry in order to speed up the development of new products (prototypes, concept models, form, fit, and function testing, tooling patterns, final products - direct parts). Sintering is a term in the field of powder metallurgy and describes a process which takes place under a certain pressure and temperature over a period of time. During sintering particles of a powder material are bound together in a mold to a solid part. In selective laser sintering the crucial elements pressure and time are obsolete and the powder particles are only heated for a short period of time. SLS uses the fact that every physical system tends to achieve a condition of minimum energy. In the case of powder the partially melted particles aim to minimize their in comparison to a solid block of material enormous surface area through fusing their outer skins. Like all generative manufacturing processes laser sintering gains the geometrical information out of a 3D CAD model. This model is subdivided into slices or layers of a certain layer thickness. Following this is a revolving process which consists of three basic process steps: recoating, exposure, and lowering of the build platform until the part is finished completely.
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Sedlak, Josef, Oskar Zemčík, Martin Slaný, et al. "PRODUCTION OF PROTOTYPE PARTS USING DIRECT METAL LASER SINTERING TECHNOLOGY." Acta Polytechnica 55, no. 4 (2015): 260. http://dx.doi.org/10.14311/ap.2015.55.0260.

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<p>Unconventional methods of modern materials preparation include additive technologies which involve the sintering of powders of different chemical composition, granularity, physical, chemical and other utility properties. The technology called Rapid Prototyping, which uses different technological principles of producing components, belongs to this type of material preparation. The Rapid Prototyping technology facilities use photopolymers, thermoplastics, specially treated paper or metal powders. The advantage is the direct production of metal parts from input data and the fact that there is no need for the production of special tools (moulds, press tools, etc.). Unused powder from sintering technologies is re-used for production 98% of the time, which means that the process is economical, as well as ecological.The present paper discusses the technology of Direct Metal Laser Sintering (DMLS), which falls into the group of additive technologies of Rapid Prototyping (RP). The major objective is a detailed description of DMLS, pointing out the benefits it offers and its application in practice. The practical part describes the production and provides an economic comparison of several prototype parts that were designed for testing in the automotive industry.</p>
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Ujjal, Chatterjee, Kumar Roy Sumit, Kumari Monika, and Dutta Surupa. "Onlay restoration with direct metal laser sintering technology: A digital approach to prosthetic repair." Journal of Orofacial Rehabilitation 5, no. 1 (2025): 35–39. https://doi.org/10.5281/zenodo.15549359.

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<strong>Abstract</strong> <strong>Introduction: </strong>Full-mouth rehabilitation aims to restore function, aesthetics, and occlusion in patients with extensive dental wear, damage, or previous prosthetic failure. The selection of materials and techniques significantly influences the long-term success of the prosthesis. <strong>Case characteristics: </strong>A patient reported to the department with chief complaints of a fractured porcelain-fused-to-metal (PFM) bridge. After evaluating the dislodged prosthesis, an intraoral scan of the existing condition was performed. A digital workflow was utilized to design a new onlay restoration. A Direct Metal Laser Sintering (DMLS) metal framework was fabricated and tried in the patient's mouth, followed by PFM layering. The final prosthesis was cemented using resin cement and occlusion was carefully adjusted. <strong>Conclusion: </strong>The integration of digital dentistry and DMLS technology provides a precise and efficient approach to rehabilitate prosthetic failures. This case highlights the importance of digital scanning, CAD-CAM designing, and metal laser sintering in achieving optimal prosthetic outcomes.
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Żaba, K., S. Puchlerska, M. Kwiatkowski, et al. "Comparative Analysis of Properties and Microstructure of the Plastically Deformed Alloy Inconel®718, Manufactured by Plastic Working and Direct Metal Laser Sintering." Archives of Metallurgy and Materials 61, no. 1 (2016): 143–48. http://dx.doi.org/10.1515/amm-2016-0026.

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Nickel superalloys as Inconel® are materials widely used in the aerospace industry among others for diffusers, combustion chamber, shells of gas generators and other. In most cases, manufacturing process of those parts are used metal strips, produced by conventional plastic processing techniques, and thus by hot or cold rolling. An alternative technology allowing for manufacturing components for jet engines is the technique of 3D printing (additive manufacturing), and most of all Direct Metal Laser Sintering, which is one of the latest achievement in field of additive technologies. The paper presents a comparative analysis of the microstructure and mechanical properties of the alloy Inconel®718 manufactured by plastic working and Direct Metal Laser Sintering technology, in the initial state, after deformation and after heat treatment.
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Renn, Michael J., Matthew Schrandt, Jaxon Renn, and James Q. Feng. "Localized Laser Sintering of Metal Nanoparticle Inks Printed with Aerosol Jet® Technology for Flexible Electronics." Journal of Microelectronics and Electronic Packaging 14, no. 4 (2017): 132–39. http://dx.doi.org/10.4071/imaps.521797.

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Direct-write methods, such as the Aerosol Jet® technology, have enabled fabrication of flexible multifunctional 3-D devices by printing electronic circuits on thermoplastic and thermoset polymer materials. Conductive traces printed by additive manufacturing typically start in the form of liquid metal nanoparticle inks. To produce functional circuits, the printed metal nanoparticle ink material must be postprocessed to form conductive metal by sintering at elevated temperature. Metal nanoparticles are widely used in conductive inks because they can be sintered at relatively low temperatures compared with the melting temperature of bulk metal. This is desirable for fabricating circuits on low-cost plastic substrates. To minimize thermal damage to the plastics, while effectively sintering the metal nanoparticle inks, we describe a laser sintering process that generates a localized heat-affected zone (HAZ) when scanning over a printed feature. For sintering metal nanoparticles that are reactive to oxygen, an inert or reducing gas shroud is applied around the laser spot to shield the HAZ from ambient oxygen. With the shroud gas-shielded laser, oxygen-sensitive nanoparticles, such as those made of copper and nickel, can be successfully sintered in open air. With very short heating time and small HAZ, the localized peak sintering temperature can be substantially higher than that of damage threshold for the underlying substrate, for effective metallization of nanoparticle inks. Here, we demonstrate capabilities for producing conductive tracks of silver, copper, and copper–nickel alloys on flexible films as well as fabricating functional thermocouples and strain gauge sensors, with printed metal nanoparticle inks sintered by shroud-gas-shielded laser.
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Penchev, Preslav. "In Vitro Comparative Study of Different Technologies for Metal Denture Frameworks Fabrication - Direct Metal Laser Sintering, Machine Milling and Hybrid Technology." International Journal of Science and Research (IJSR) 10, no. 12 (2021): 868–73. https://doi.org/10.21275/sr211216062212.

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Kotila, Juha, Tatu Syvänen, Jouni Hänninen, Maria Latikka, and Olli Nyrhilä. "Direct Metal Laser Sintering – New Possibilities in Biomedical Part Manufacturing." Materials Science Forum 534-536 (January 2007): 461–64. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.461.

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Direct Metal Laser Sintering (DMLS) has been utilized for prototype manufacturing of functional metal components for years now. During this period the surface quality, mechanical properties, detail resolution and easiness of the process have been improved to the level suitable for direct production of complex metallic components for various applications. The paper will present the latest DMLS technology utilizing EOSINT M270 laser sintering machine and EOSTYLE support generation software for direct and rapid production of complex shaped metallic components for various purposes. The focus of the presentation will be in rapid manufacturing of customized biomedical implants and surgical devices of the latest stainless steel, titanium and cobalt-chromium-molybdenum alloys. In addition to biomedical applications, other application areas where complex metallic parts with stringent requirements are being needed will be presented.
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Humnabad, Prashant S., R. Tarun, and Indraneel Das. "An Overview Of Direct Metal Laser Sintering (DMLS) Technology For Metal 3D Printing." Journal of Mines, Metals and Fuels 70, no. 3A (2022): 127. http://dx.doi.org/10.18311/jmmf/2022/30681.

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&lt;p&gt;Additive manufacturing is the process of building a component or a product layer-by-layer, as opposed to casting the component and then performing various subtractive machining processes like turning, drilling, milling which are the approach of subtractive manufacturing. The term 3D printing refers to the family of additive manufacturing processes, which utilize different mechanisms in order to build the product from a sliced computer aided design (CAD) model fed to the machine. direct metal laser sintering (DMLS) is the one method of 3D printing functional metal parts are suitable for engineering applications and has the potential to provide a viable alternative to conventional methods of manufacturing and produce superior quality components with great flexibility in design using a wide range of materials. This paper presents the overview of DMLS technology, process parameters, design considerations, case studies of parts manufactured by DMLS and its applications in metal casting and rapid tooling.&lt;/p&gt;
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Dissertations / Theses on the topic "Direct Metal Laser Sintering technology"

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Sekerka, Vít. "Výroba dílů technologií DMLS a jejich porovnání s jinými konvenčními technologiemi z hlediska ekonomické náročnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229969.

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This diploma thesis presents a technology based on the gradual smelting of fine layers of metal powder by using a laser beam. It explains and describes basic terminology related to the Rapid Prototyping technology, its division and practical usage. A part of the thesis is also the fabrication of several prototype parts by Direct Metal Laser Sintering including the economical comparison of their fabrication with other conventional technologies.
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Girardin, Emmanuelle. "Biomedical metal alloys produced by Direct Metal Laser Sintering." Doctoral thesis, Università Politecnica delle Marche, 2016. http://hdl.handle.net/11566/243150.

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La Sinterizzazione Diretta di Metalli mediante Laser (DMLS), basata su un processo strato-per-strato, è stata usata per ottenere provini in leghe Co–Cr–Mo–W e Ti-6Al-4V per applicazioni biomediche. La risposta meccanica e la microstruttura sono state studiate sia nello stato “tal quale” che dopo trattamento termico post-produzione per i campioni in Co–Cr–Mo–W, e dopo due diversi trattamenti termici per quelli in Ti-6Al-4V. Misure di rugosità e durezza, così come test di trazione e flessione, sono state eseguite per studiare la risposta meccanica, mentre la diffrazione di raggi X, la microscopia elettronica (SEM, TEM, STEM) e la microanalisi (EDX) sono state usate per investigare la microstruttura. Nella lega Ti-6Al-4V è stata studiata anche l’anisotropia. I risultati nella lega Co–Cr–Mo–W mostrano una rete di lamelle ε-Co (esagonale) nella matrice γ-Co (cubica a face centrate), responsabile della alta resistenza a trazione (UTS) e durezza nello stato “tal quale”. I trattamenti termici aumentano la frazione volumica dell’ε-Co, modificando leggermente la dimensione media della struttura lamellare. In ogni caso, i trattamenti termici danno origine ad un sensibile aumento di UTS e durezza e ad una forte riduzione della duttilità. Quest’ultima è attribuito ad una massiccia precipitazione di fase esagonale Co3(Mo,W)2Si e alla contemporanea formazione di inclusioni ricche in Si. I campioni di Ti-6Al-4V rivelano una bassa porosità ed alte proprietà meccaniche, in particolare una maggiore elongazione rispetto ai dati di letteratura. Non si evidenzia alcuna anisotropia fre le orientazioni. La microstruttura osservata è molto fine. Si rileva una fase martensitica α’-Ti dopo il primo trattamento di rilassamento degli sforzi, mentre il ciclo termico induce una fase stabile α+β-Ti, con la fase β che cresce al bordo-grano della α. Questi risultati suggeriscono possibili applicazioni innovative della tecnologia DMLS per la produzione di parti meccaniche in campo medico/odontoiatrico.<br>Direct Metal Laser Sintering (DMLS), based on a layer-by-layer production process, was used to produce specimens in Co–Cr–Mo–W and Ti-6Al-4V alloys, which are utilized in biomedical applications. The mechanical response and microstructure were investigated in the as-sintered state and after post-production thermal treatments for the Co-Cr-Mo-W samples, and after two post-production treatments for the Ti-6Al-4V ones. Roughness and hardness measurements, as well as tensile and flexural tests, were performed to study the mechanical response, while X-ray diffraction (XRD), electron microscopy (SEM, TEM, STEM) and microanalysis (EDX) were used to investigate the microstructure in different conditions. The anisotropy of the Ti-6Al-4V specimens was also investigated. Results on the Co-Cr-Mo-W samples showed an intricate network of ε-Co (hcp) lamellae in the γ-Co (fcc) matrix, responsible of the high UTS and hardness in the as-sintered state. Thermal treatments increase volume fraction of the ε-Co (hcp) martensite but slightly modify the average size of the lamellar structure. Nevertheless, thermal treatments are capable of producing a sensible increase in UTS and hardness and a strong reduction in ductility. These latter effects were mainly attributed to the massive precipitation of an hcp Co3(Mo,W)2Si phase and the contemporary formation of Si-rich inclusions. Ti-6Al-4V specimens reveal extremely low porosity, high mechanical properties, in particular an elongation higher than the literature data. The results do not evidence any anisotropy between the different orientations. The observed microstructure is very fine. A martensitic α’-Ti phase is detected after the first stress relieving treatment, while the firing cycle induces a phase transformation to a stable α+β-Ti phase with the β phase growing at the α grains boundaries. These results suggest possible innovative applications of the DMLS technique to the production of mechanical parts in the medical and dental fields.
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Pozzi, Francesco. "Direct metal laser sintering of steel with high vanadium content." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13548/.

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La definizione di "rapid prototyping" è ben nota. Ci si riferisce a quell'insieme di tecnologie utilizzate per la realizzazione di oggetti partendo da modelli geometrici molto complicati, realizzando protitipi direttamente dal disegno CAD 3D. Le tecnologie RP sono state poi sviluppate per l'industria artigianale, nell'obiettivo di accelerare la produzione senza perdita di precisione nella costruzione. Tra queste tecniche sono sorte quelle di selective laser sintering. La sinterizzazione è il processo termico e meccanico per produrre materiali compattando sostanze in polvere, sotto una certa pressione o temperatura; più precisamente, nella sinterizzazione laser le polveri sono riscaldate per un tempo brevissimo. La fisica che descrive questo processo è piuttosto articolata, dato che la descrizione parte dall'assorbimento di radiazione laser e che comprenderà conduzione termica nella polvere, trasformazione di fase di un materiale eterogeneo, formazione di fase solida con diversi meccanismi di condensazione e lo sviluppo delle diverse microstrutture dell'acciaio. Il lavoro sperimentale che è stato svolto è la produzione di una polvere di acciaio e vanadio utilizzabile in solid state sintering, ma dato quanto detto, lo studio ha incluso una descrizione più generale del processo della sinterizzazione metallica da polveri. Nel corso del lavoro si è contribuito alla messa a punto della stampante 3D per sinterizzazione di polveri metalliche realizzata alla 3d4mec, soffermandosi nella ricerca dei parametri ottimali per la stampa di polvere StainlessSteel CX by EOS.
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Říčan, Daniel. "Návrh výroby tělesa plynového analyzátoru s využitím metody Direct Metal Laser Sintering." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229527.

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This master’s thesis deals with the possibility of manufacturing gas analyzer by Rapid Prototyping Technology and it with the method Direct Metal Laser Sintering. The theoretical part describes the current production of component in the Frentech Aerospace LLC and innovation with the DMSL method in the company Innomia Furthermore JSC. Then an analysis of the principle of single methods Rapid Prototyping, especially the method of Direct Metal Laser Sintering, is implemented. The aim of the experimental part is to compare the mechanical properties and material structures, conventional metallurgy and powder metallurgy. The thesis also contains a technical-economic evaluation comparing the manufacture of mechanical part by conventional and advanced additive technology.
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Chen, Tiebing. "Analysis and modeling of direct selective laser sintering of two-component metal powders." Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/5818.

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Thesis (Ph.D.)--University of Missouri-Columbia, 2005.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (November 15, 2006) Vita. Includes bibliographical references.
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Xu, Yangzi. "Corrosion Behavior of Direct Metal Laser Sintered Ti-6Al-4V for Orthopedic Applications." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/282.

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Ti-6Al-4V alloy has been used as biomedical implants for decades because of its superior mechanical properties, good biocompatibility, lack of allergic problems and good corrosion resistance. It is widely used as the tibial components in total knee arthroplastry and hip cup in total hip replacement. However, the mechanical properties of Ti-6Al-4V implant can be deteriorated due to corrosion pits. In the past decades, the rapid developments in additive manufacturing have broadened their applications in biomedical area due to the high geometrical freedom in fabricating patient-friendly implants. However, the high-localized thermal input and fast cooling rate during laser processing usually result in non-equilibrium phase with high residual stress. Therefore, it is necessary to apply proper post-treatments on the as-printed parts to ensure better properties. In this work, various post-treatments (e.g. post-heat treatments, hot isostatic pressing) were applied aim to improve the corrosion behavior of direct metal laser sintered Ti-6Al-4V parts. The effect of post-treatment temperature on the mechanical properties and corrosion behavior were examined experimentally. A discussion on factors influencing corrosion rate was presented, and the corrosion mechanism on the Ti-6Al-4V part in simulated body fluid was proposed. Based on the electrochemical measurement results, enhanced corrosion resistance was observed in the samples after high temperature HIPing at the annealing temperature (α+β region) of 799°C.
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Das, Suman. "Direct selective laser sintering of high performance metals : machine design, process development and process control /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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Coffy, Kevin. "Microstructure and Chemistry Evaluation of Direct Metal Laser Sintered 15-5 PH Stainless Steel." Master's thesis, University of Central Florida, 2014. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/6256.

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15-5PH stainless steel is an important alloy in the aerospace, chemical, and nuclear industries for its high strength and corrosion resistance at high temperature. Thus, this material is a good candidate for processing development in the direct metal laser sintering (DMLS) branch of additive manufacturing. The chemistry and microstructure of this alloy processed via DMLS was compared to its conventionally cast counterpart through various heat treatments as part of a characterization effort. The investigation utilized optical microscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-Ray diffractometry (XRD), energy dispersive X-Ray spectroscopy (EDS) and glow discharge atomic emission spectrometry (GDS) techniques. DMLS processed samples contained a layered microstructure in which the prior austenite grain sizes were relatively smaller than the cast and annealed prior austenite grain size. The largest of the quantifiable DMLS prior austenite grains had an ASTM grain size of approximately 11.5-12 (6.7?m to 5.6?m, respectively) and the cast and annealed prior austenite grain size was approximately 7-7.5 (31.8?m to 26.7?m, respectively), giving insight to the elevated mechanical properties of the DMLS processed alloy. During investigation, significant amounts of retained austenite phase were found in the DMLS processed samples and quantified by XRD analysis. Causes of this phase included high nitrogen content, absorbed during nitrogen gas atomization of the DMLS metal powder and from the DMLS build chamber nitrogen atmosphere. Nitrogen content was quantified by GDS for three samples. DMLS powder produced by nitrogen gas atomization had a nitrogen content of 0.11 wt%. A DMLS processed sample contained 0.08 wt% nitrogen, and a conventionally cast and annealed sample contained only 0.019 wt% nitrogen. In iron based alloys, nitrogen is a significant austenite promoter and reduced the martensite start and finish temperatures, rendering the standard heat treatments for the alloy ineffective in producing full transformation to martensite. Process improvements are proposed along with suggested future research.<br>M.S.M.E.<br>Masters<br>Materials Science Engineering<br>Engineering and Computer Science<br>Materials Science and Engineering
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De, Beer N., and A. I. Odendaal. "The geometrical accuracy of a custom artificial intervertebral disc implant manufactured using Computed Tomography and Direct Metal Laser Sintering." Journal for New Generation Sciences, Vol 10, Issue 3: Central University of Technology, Free State, Bloemfontein, 2012. http://hdl.handle.net/11462/613.

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Published Article<br>Rapid Manufacturing (RM) has emerged over the past few years as a potential technology to successfully produce patient-specific implants for maxilla/facial and cranial reconstructive surgeries. However, in the area of spinal implants, customization has not yet come to the forefront and with growing capabilities in both software and manufacturing technologies, these opportunities need to be investigated and developed wherever possible. The possibility of using Computed Tomography (CT) and Rapid Manufacturing (RM) technologies to design and manufacture a customized, patient-specific intervertebral implant, is investigated. Customized implants could aid in the efforts to reduce the risk of implant subsidence, which is a concern with existing standard implants. This article investigates how accurately the geometry of a customized artificial intervertebral disc (CAID) can represent the inverse geometry of a patient's vertebral endplates. The results indicate that the endplates of a customized disc implant can be manufactured to a calculated average error of 0.01mm within a confidence interval of 0.022mm, with 95% confidence, when using Direct Metal Laser Sintering.
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Verma, Anoop P. "Minimizing Build Time and Surface Inaccuracy of Direct Metal Laser Sintered Parts: An Artificial Intelligence Based Optimization Approach." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1249840383.

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Book chapters on the topic "Direct Metal Laser Sintering technology"

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Cader, Maciej, and Dominik Wyszyński. "Application of Direct Metal Laser Sintering for Manufacturing of Robotic Parts." In Recent Advances in Systems, Control and Information Technology. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48923-0_36.

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Băilă, Diana-Irinel, Răzvan Păcurar, and Ancuța Păcurar. "Thin-Film Protective Coatings on Samples Manufactured by Direct Metal Laser Sintering Technology Used in Dentistry." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-99769-4_5.

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Vezzani, M., A. O. Andrisano, R. Groppetti, P. Onesti, A. Rossi, and A. Scrivani. "A Contribution to the Analysis, Characterization and Improvement of Surface Properties Generated by Direct Metal Laser Sintering (DMLS) for Rapid Tooling." In AMST’02 Advanced Manufacturing Systems and Technology. Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-2555-7_88.

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Zayed, Abdul Hasib Hasan, Mostofa Jawad Itmum, Niaz Mohammad Zahin, Mahatab Bin Rashid, and Md Enamul Hoque. "Direct Metal Laser Sintering of Aeroengine Materials." In Sustainable Aviation. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-64455-9_8.

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Xu, Yangzi, Kristin L. Sundberg, and Richard D. Sisson. "Corrosion Behavior of Ti6Al4V Fabricated by Direct Metal Laser Sintering." In Proceedings of the 13th World Conference on Titanium. John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119296126.ch252.

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Kotila, Juha, Tatu Syvänen, Jouni Hänninen, Maria Latikka, and Olli Nyrhilä. "Direct Metal Laser Sintering – New Possibilities in Biomedical Part Manufacturing." In Progress in Powder Metallurgy. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.461.

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Ye, Dongsen, Yingjie Zhang, Kunpeng Zhu, Geok Hong, and Jerry Ying. "Characterization of acoustic signals during a direct metal laser sintering process." In Advances in Energy Science and Equipment Engineering II. CRC Press, 2017. http://dx.doi.org/10.1201/9781315116174-89.

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Dolinsek, Slavko. "Direct Metal Laser Sintering Some Improvements of the Materials and Process." In THERMEC 2006. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.2681.

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Zhu, H. H., J. Y. H. Fuh, and L. Lu. "Direct Laser Sintering of Cu-based Metallic Powder for Injection Moulding." In AMST’02 Advanced Manufacturing Systems and Technology. Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-2555-7_90.

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Shakerin, Sajad, and Mohsen Mohammadi. "Hybrid Additive Manufacturing of MS1-H13 Steels via Direct Metal Laser Sintering." In TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36296-6_26.

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Conference papers on the topic "Direct Metal Laser Sintering technology"

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Prieto, C., D. Young, M. Singer, M. Clum, and T. J. Cyders. "Pitting Corrosion Resistance of a 316L Stainless Steel Manufactured by the Direct Metal Laser Sintering Process." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11569.

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Abstract Direct metal laser sintering (DMLS) is an additive manufacturing process that utilizes a laser to sinter powdered metal to make geometrically complex parts. However, DMLS generally produces material with lower mechanical performance and higher anisotropy as compared to conventional manufacturing approaches of the same material. Furthermore, components made by DMLS are believed to be more vulnerable to corrosion due to the presence of residual porosity, as well as laser induced microstructural deformations. This research focuses on the evaluation of the pitting corrosion resistance of 316L stainless steel manufactured using DMLS. Rolled 316L stainless steel specimens with similar chemical composition were used as a reference to compare their microstructural characteristics, porosity and pitting corrosion resistance. The microstructure of the DMLS samples was also compared to specimens annealed to eliminate laser induced scan tracks. Porosity of the DMLS specimens were determined per ASTM B311. Profilometry, compositional analysis and quantification of the corrosion resistance were performed, before and after the corrosion pitting resistance test, per ASTM G48 Method A (ferric chloride pitting test).
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Badrak, Robert, William Howie, Arturo Delacruz, and Sergey Kolesov. "Characterization of Direct Metal Laser Sintered Alloy 718 in the As-Fabricated and Heat Treated Condition." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11297.

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Abstract Additive manufacturing (AM) processes have been shifting from primarily prototyping products to the production of fully functional end parts and components. An understanding of the material characteristics necessitates an evaluation of the mechanical and corrosion behavior in order to determine and quantify the limitations of AM processes. This paper focuses on characterizing Alloy 718 produced via the Direct Metal Laser Sintering (DMLS) process in the as-fabricated and heat treated condition. The printed Alloy 718 material was produced on a single plate comprised of rectangular, cylindrical and round shapes of varying section thickness that were subjected to evaluation that included chemistry, microstructural, mechanical, fatigue and corrosion testing. Heat treated sections were solution annealed and precipitation hardened in accordance with API 6ACRA.
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Galon, Mark Anthony T., and Edward B. Ang. "Development, fabrication, and assessment of durian dehusking machine’s gripper by direct metal laser sintering-powder bed fusion using AlSi10Mg." In 7th International Conference on Mechanical Manufacturing and Industrial Engineering : Advancements in Precision Engineering: Innovation and the Future (MMIE 2024), edited by Hideaki Tsukamoto. SPIE, 2024. http://dx.doi.org/10.1117/12.3051363.

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Prieto, Claudia, Marc Singer, and David Young. "Pitting and Crevice Corrosion Resistance of a Direct Metal Laser Sintered (DMLS) 316L Stainless Steel in Artificial Seawater." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-17006.

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Abstract The use of 2%-Mo containing austenitic stainless steels is a common practice for marine applications, such as for the fabrication of fuel nozzles and impellers. Such geometrically complex parts can be manufactured more efficiently using additive manufacturing techniques, such as the direct metal laser sintering process (DMLS). However, research has revealed that 316-type stainless steels are not entirely exempt from undergoing localized attack. Environmental factors, such as chloride content, temperature and oxygen levels are key governing factors limiting the application of 2%-Mo containing austenitic stainless steels. Moreover, the susceptibility to localized attack for additively manufactured products, such as 316L DMLS, has been postulated to significantly increase due to residual porosity, surface asperity and microstructural defects inherent to the additive manufacturing process. Since the additive manufacturing of geometrically complex parts confers advantages in terms of design, it is essential to determine if their performance against corrosion would compromise their real-world applicability. By using aerated artificial seawater per ASTM D1141 and cyclic potentiodynamic polarization (CPP), the metastable pitting characteristics of a 316L stainless steel manufactured by the DMLS process was characterized. Moreover, the effect of an argon quenched heat treatment was explored. A cold-rolled 316L stainless steel, as-received and heat-treated, was used as a reference for this study. Results indicated that the heat treatment increased the resistance to pitting initiation of the 316L stainless steel made by DMLS as inherent microstructural defects were healed.
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Chandra Achinadka, Jagadish. "Study of Condensate Generated During Direct Metal Laser Sintering." In ASME 2017 Gas Turbine India Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gtindia2017-4900.

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DMLS (Direct Metal Laser Sintering), an additive manufacturing technology, is increasingly becoming popular to build intricate high quality functional parts &amp; rapid prototypes. DMLS technology uses a high intensity laser to build components layer by layer, directly from metal powder. CAD data is directly converted to part without the need for tooling. It is possible to build internal features and passages that are not possible in conventional manufacturing routes. The process generates significant amount of condensate due to vaporization and suction applied to build chamber. Typically as much as 30% of the weight of powder ends up as condensate. The condensate so generated cannot be directly recycled. This results in significant reduction in profitability and process efficiency. This study pertains to 18% Ni Maraging Steel grade C300, which commonly used in DMLS process. Maraging Steel is used extensively to build functional parts by DMLS process especially for Tool and Die applications. In the present study chemistry, particle size distribution &amp; morphology of the condensate was studied &amp; compared with the powder. Parts were built using condensate and chemical, physical, mechanical, microstructure and XRD studies were done. These properties were compared with properties of parts built using fresh powder. No difficulty was encountered in building parts using condensate. However, hardness and tensile properties were found to be inferior, thus it is not possible to recycle the condensate directly. Present research investigates the cause of difference in these properties.
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Matějka, Michal, Zdeněk Veselý, and Jiří Tesař. "Possibilities of non-contact temperature measurement in additive direct metal laser sintering technology." In INTELLIGENT BIOTECHNOLOGIES OF NATURAL AND SYNTHETIC BIOLOGICALLY ACTIVE SUBSTANCES: XIV Narochanskie Readings. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0147161.

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Baila, Diana-Irinel. "RECYCLING OF CO-CR POWDERS USED FOR MANUFACTURING BY DIRECT METAL LASER SINTERING TECHNOLOGY." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/6.2/s25.066.

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Shi-Gang Zhou, Guan-Long Huang, and Tan-Huat Chio. "Compact, lightweight and wideband directional waveguide coupler implemented with 3D direct-metal-laser-sintering technique." In 2016 IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT). IEEE, 2016. http://dx.doi.org/10.1109/icmmt.2016.7761732.

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Mazumder, Jyoti, and Lijun Song. "Advances in Direct Metal Deposition." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65042.

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Recently Additive Manufacturing (AM) has been hailed as the “third industrial revolution” by The Economist magazine [April-2012]. Precision of the product manufactured by AM largely depends on the on line process diagnostics and control. AM caters to the quest for a material to suit the service performance, which is almost as old as the human civilization. An enabling technology which can build, repair or reconfigure components layer by layer or even pixel by pixel with appropriate materials to match the performance will enhance the productivity and thus reduce energy consumption. With the globalization, “Economic Space” for an organization is now spreads all across the globe. The promise of AM for Global Platform for precision additive manufacturing largely depends on the speed and accuracy of in-situ optical diagnostics and its capability to integrate with the process control. The two main groups of AM are powder bed (e.g. Laser Sintering) and pneumatically delivered powder (e.g. Direct Metal Deposition [DMD]) to fabricate components. DMD has closed loop capability, which enables better dimension and thermal cycle control. This enables one to deposit different material at different pixels with a given height directly from a CAD drawing. The feed back loop also controls the thermal cycle. New optical Sensors are either developed or being developed to control geometry using imaging, cooling rate by monitoring temperature, microstructure, temperature and composition using optical spectra. Ultimately these sensors will enable one to “Certify as you Build”. Flexibility of the process is enormous and essentially it is an enabling technology to materialize many a design. Several cases will be discussed to demonstrate the additional capabilities possible with the new sensors. Conceptually one can seat in Singapore and fabricate in Shanghai. Such systems will be a natural choice for a Global “Economic Space”.
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Scott-Emuakpor, Onome, Casey Holycross, Tommy George, Kevin Knapp, and Jeffery Bruns. "Fatigue and Strength Studies of Titanium 6Al-4V Fabricated by Direct Metal Laser Sintering." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42891.

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Vibratory bending fatigue life behavior of Titanium (Ti) 6Al-4V plate specimens has been assessed. The plates were manufactured via direct metal laser sintering (DMLS), which is a powder bed, laser deposition additive manufacturing process. Motivation for this work is based on unprecedented performance demands for sixth generation gas turbine engine technology. For example, the inclusion of a third stream flow for improving engine performance may add complexity and weight that could offset anticipated thrust and fuel efficiency gains. Therefore, complex, lightweight components with improved functionalities are desired. Novel component design concepts have been cost, schedule, and feasibility limited when using conventional manufacturing methods. Additive manufacturing, however, can extend the thresholds of component concepts. Though additive manufacturing can be a promising addition to the turbine engine community, the manufacturing process controls required to achieve consistency in material properties have not been fully identified. The work presented in this manuscript investigates variability in vibration-based bending fatigue life of DMLS Ti 6Al-4V compared to cold-rolled Ti 6Al-4V. Results show discrepancies between the fatigue life variation of DMLS and cold-rolled data. Along with the support of fusion and post-fusion process parameters, the fatigue results are also supported by tensile property characterization, fractography, and microscopy.
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Reports on the topic "Direct Metal Laser Sintering technology"

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Bons, Jeffrey, Ali Ameri, James Gregory, and Arif Hossain. Revolutionizing Turbine Cooling with Micro-Architectures Enabled by Direct Metal Laser Sintering. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1630131.

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Tekalur, Arjun, Jacob Kallivayalil, Jason Carroll, et al. Additive manufacturing of metallic materials with controlled microstructures : multiscale modeling of direct metal laser sintering and directed energy deposition. Engineer Research and Development Center (U.S.), 2019. http://dx.doi.org/10.21079/11681/33481.

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