Searched for: subject%3A%22laser%255C%2Bpowder%255C%2Bbed%255C%2Bfusion%22
(1 - 20 of 20)
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Zhu, Jia-Ning (author)Shape memory alloys (SMAs), such as nickel-titanium (NiTi) alloys or Nitinol, possess remarkable properties, including superelasticity and shape memory effects, which are attributed to the reversible martensitic transformation. However, traditional manufacturing of NiTi SMAs is challenging due to its high ductility and reactivity, which limits...doctoral thesis 2023
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Arrieta Rodriguez, Ana (author)Laser Powder Bed Fusion (LPBF) is a metal additive manufacturing process in which a three-dimensional object is obtained by selectively melting and fusing a metallic powder with a heat source, such as a laser beam, in successive thin layers. This process allows to create lightweight parts with complex geometry. However, parts created by LPBF...master thesis 2023
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Mohandas, N.K. (author), Giorgini, Alex (author), Vanazzi, Matteo (author), Riemslag, A.C. (author), Scott, S.P. (author), Popovich, V. (author)This study investigated the in-situ gaseous (under 150 bar) hydrogen embrittlement behaviour of additively manufactured (AM) Inconel 718 produced from sustainable feedstock. Here, sustainable feedstock refers to the Inconel 718 powder produced by vacuum induction melting inert gas atomisation of failed printed parts or waste from CNC machining....journal article 2023
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Zhu, Jia-Ning (author), Liu, K. (author), Riemslag, A.C. (author), Tichelaar, F.D. (author), Borisov, Evgenii (author), Yao, Xiyu (author), Popovich, Anatoly (author), Huizenga, R.M. (author), Hermans, M.J.M. (author), Popovich, V. (author)Superelastic metallic materials possessing large recoverable strains are widely used in automotive, aerospace and energy conversion industries. Superelastic materials working at high temperatures and with a wide temperature range are increasingly required for demanding applications. Until recently, high-temperature superelasticity has only...journal article 2023
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Li, Erlei (author), Shen, Haopeng (author), Wang, L. (author), Wang, Geoff (author), Zhou, Zongyan (author)The shape variation of the laser beam is evidently observed in the laser powder bed fusion (LPBF) process because of changes in laser incidence angle and misalignment between the build plate and the laser focus plane. This issue is particularly relevant in large-scale LPBF systems where the laser beam needs to scan a large build area. However...journal article 2023
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Sun, Lingqi (author), Chen, K. (author), Geng, Peng (author), Zhou, Yan (author), Wen, Shifeng (author), Shi, Yusheng (author)Porous NiTi lattice structures are widely used in the manufacture of crucial components owing to their excellent shape memory effect, superelasticity, and high damping capacities. However, the specific strength and lightweight characteristics of porous NiTi lattice structures fabricated by conventional technologies are limited by...journal article 2023
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Zhu, Jia-Ning (author), Zhu, Weijia (author), Borisov, Evgenii (author), Yao, Xiyu (author), Riemslag, A.C. (author), Goulas, Constantinos (author), Popovich, Anatoly (author), Yan, Z. (author), Tichelaar, F.D. (author), Mainali, D.P. (author), Hermans, M.J.M. (author), Popovich, V. (author)Additive manufacturing of NiTi shape memory alloys has attracted attention in recent years, due to design flexibility and feasibility to achieve four-dimensional (4D) function response. To obtain customized 4D functional responses in NiTi structures, tailorable phase transformation temperatures and stress windows as well as one-way or two-way...journal article 2023
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Zhu, Jia-Ning (author), Ding, Z. (author), Borisov, Evgenii (author), Yao, Xiyu (author), Brouwer, J.C. (author), Popovich, Anatoly (author), Hermans, M.J.M. (author), Popovich, V. (author)The pursuit of enhancing NiTi superelasticity through laser powder bed fusion (L-PBF) and [001] texture creation poses a challenge due to increased susceptibility to hot cracking in the resulting microstructure with columnar grains. This limitation restricts NiTi's application and contributes to material waste. To overcome this, we introduce...journal article 2023
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Liu, M. (author), Zhu, Jia-Ning (author), Popovich, V. (author), Borisov, E. (author), Mol, J.M.C. (author), Gonzalez Garcia, Y. (author)Electrochemical tests and surface analysis were applied to study the corrosion behavior and passive film characteristics of three-dimensional-printed NiTi shape memory alloys fabricated by laser-powder bed fusion (L-PBF) in artificial saliva at 37 °C. The passivity of L-PBF NiTi shows to be influenced by the process parameters and resulting...journal article 2023
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Ranjan, R. (author), Langelaar, Matthijs (author), van Keulen, A. (author), Ayas, C. (author)Computational process modelling of metal additive manufacturing has gained significant research attention in recent past. The cornerstone of many process models is the transient thermal response during the AM process. Since deposition-scale modelling of the thermal conditions in AM is computationally expensive, spatial and temporal...journal article 2023
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Liu, M. (author), Zhu, Jia-Ning (author), Popovich, V. (author), Borisov, E. (author), Mol, J.M.C. (author), Gonzalez Garcia, Y. (author)Electrochemical tests and surface analysis measurements were performed to study the corrosion behavior in a 0.9 wt.% NaCl solution at 37 °C of three NiTi shape memory alloys fabricated by laser-powder bed fusion (L-PBF). The passive film characteristics and corrosion resistance of L-PBF NiTi showed different features as a function of their...journal article 2023
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Terol Sanchez, María (author)This study addresses the effects of additive manufacturing (AM) parameters and post-processing heat treatments on the microstructure and fracture toughness behavior of functionally graded and non-graded Inconel 718. Laser powers of 250W and 950W were used to fabricate non-graded and graded specimens. To study the effects of the microstructural...master thesis 2022
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Delissen, A.A.T.M. (author), Boots, Elwin (author), Laro, Dick (author), Kleijnen, Harry (author), van Keulen, A. (author), Langelaar, M. (author)The design of high-precision motion stages, which must exhibit high dynamic performance, is a challenging task. Manual design is difficult, time-consuming, and leads to sub-optimal designs that fail to fully exploit the extended geometric freedom that additive manufacturing offers. By using topology optimization and incorporating all...journal article 2022
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Ghorbanpour, S. (author), Deshmukh, Kaustubh (author), Sahu, Saswat (author), Riemslag, A.C. (author), Reinton, T.E. (author), Borisov, Evgenii (author), Jiang, Quanxin (author), Terol Sanchez, M. (author), Knezevic, Marko (author), Popovich, V. (author)This paper addresses the effect of the post-process heat treatments on the microstructure and fatigue crack growth behaviour of the functionally graded (FG) laser powder bed fusion (L-PBF) Inconel 718 (IN718) superalloy. Sets of samples were additively manufactured (AM) altering the process parameters, namely the laser power, the laser...journal article 2022
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Dehgahi, S. (author), Pirgazi, H. (author), Sanjari, M. (author), Seraj, P. (author), Odeshi, A. (author), Kestens, L.A.I. (author), Mohammadi, M. (author)The deformation performance of maraging steel samples fabricated using the laser powder bed fusion technique was evaluated using the split Hopkinson torsion bar (SHTB) test. Thin-walled tubular maraging steel samples were deformed under dynamic torsional loading at strain rates of 260 s<sup>−1</sup> to 720 s<sup>−1</sup> using twist angles...journal article 2022
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Zhu, WEIJIA (author)Nitinol shape memory alloys (SMAs) have a unique combination of shape memory capability, making it an attractive material for various engineering and biomedical applications. Additive manufacturing (AM) by laser powder bed fusion (L-PBF) allows to produce Nitinol net shape parts, which broadens its applications. Due to the high heating and...master thesis 2021
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Butrimavicius, Karolis (author)In a bid to increase additive manufacturing (AM) technology readiness, this study researched feasibility of AM technology application in the next generation secondary flight control systems. Taking a state-of-the-art certification framework and technology into account, a selection tool was created and used to survey the high lift and thrust...master thesis 2021
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Ghorbanpour, S. (author), Sahu, Saswat (author), Deshmukh, Kaustubh (author), Borisov, Evgenii (author), Riemslag, A.C. (author), Reinton, T.E. (author), Morete Barbosa Bertolo, V. (author), Jiang, Quanxin (author), Popovich, Anatolii (author), Shamshurin, Aleksey (author), Knezevic, Marko (author), Popovich, V. (author)In this paper, the effect of microstructural anisotropy on the fatigue crack growth behaviour of the functionally graded Inconel 718 fabricated through laser powder bed fusion (L-PBF) is investigated. Different manufacturing parameters, including low and high laser powers, were used to produce a variety of non-graded (NG) and functionally...journal article 2021
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Zhu, Jia-Ning (author), Borisov, Evgenii (author), Liang, X. (author), Farber, Eduard (author), Hermans, M.J.M. (author), Popovich, V. (author)Nitinol (NiTi) shape memory alloys fabricated by Laser Powder Bed Fusion (L-PBF) Additive Manufacturing (AM) have attracted much attention in recent years, as compared with conventional manufacturing processes it allows to produce Nitinol parts with high design complexity. Avoidance of defects during L-PBF is crucial for the production of...journal article 2021
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Ranjan, R. (author), Ayas, C. (author), Langelaar, M. (author), van Keulen, A. (author)The powder bed fusion (PBF) process is a type of Additive Manufacturing (AM) technique which enables fabrication of highly complex geometries with unprecedented design freedom. However, PBF still suffers from manufacturing constraints which, if overlooked, can cause various types of defects in the final part. One such constraint is the local...journal article 2020
Searched for: subject%3A%22laser%255C%2Bpowder%255C%2Bbed%255C%2Bfusion%22
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