Refining effect of electron beam melting on additive manufacturing of pure titanium products

Park, Hyung Ki; Ahn, Yong Keun; Lee, Byoung Soo; Jung, Kyung‐Hoon; Lee, Chang Woo

doi:10.1016/j.matlet.2016.10.065

Cited by 35 publications

(4 citation statements)

References 16 publications

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“…Several studies have been carried out for additive manufacturing technology, most of them focused on the creation of new software, development parameters for the additive manufacturing machines, creating materials and new manufacturing processes [6,30,[54][55][56][57][58][59]. However, the knowledge about the impacts and challenges that this technology causes in business models is still very incipient.…”

Section: Introductionmentioning

confidence: 99%

Impact Assessment of Additive Manufacturing on Sustainable Business Models in Industry 4.0 Context

et al. 2020

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Additive manufacturing has the potential to make a longstanding impact on the manufacturing world and is a core element of the Fourth Industrial Revolution. Additive manufacturing signifies a new disruptive path on how we will produce parts and products. Several studies suggest this technology could foster sustainability into manufacturing systems based on its potential of optimizing material consumption, creating new shapes, customizing designs and shortening production times that, all combined, will greatly transform some of the existing business models. Although it requires reaching a certain level of design maturity to completely insert this technology in an industrial setting, additive manufacturing has the potential to favorably impact the manufacturing sector by reducing costs in production, logistics, inventories, and in the development and industrialization of a new product. The transformation of the industry and the acceleration of the adopting rate of new technologies is driving organizational strategy. Thus, through the lenses of Industry 4.0 and its technological concepts, this paper aims to contribute to the knowledge about the impacts of additive manufacturing technology on sustainable business models. This aim is accomplished through a proposed framework, as well as the models and scales that can be used to determine these impacts. The effects are assessed by taking into account the social, environmental and economic impacts of additive manufacturing on business models and for all these three dimensions a balanced scorecard structure is proposed.

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Section: Introductionmentioning

confidence: 99%

Impact Assessment of Additive Manufacturing on Sustainable Business Models in Industry 4.0 Context

et al. 2020

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“…However, this process suffers from common problems, such as inhomogeneity of composition and structure, lower material quality, and possible retention of high-density and low-density inclusions in the metal ingot [9]. Electron beam melting technology exhibits extensive application prospects for undesired impurities removal, for solving the problem of inhomogeneity of ingot structure and composition at melting various materials, and also for breaking the length limitation of vacuum arc remelting ingots [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The microstructure of the obtained ingots after processing is important due to its influence on the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Electron Beam Method on Processing of Titanium Technogenic Material

Vutova

Vassileva

Stefanova

et al. 2019

Metals

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This study reveals the efficiency of the electron beam processing of titanium technogenic material with a high level of impurities and the quality of the obtained metal in correlation to process parameters which are discussed. The influence of the beam power and melting time on the composition variation, morphologies, hardness of metal samples and mass losses is investigated. Based on the different technological parameters, the removal efficiency of impurities is also discussed, and the corresponding experiments are carried out in order to make a comparison. Different thermal process conditions are realized during the single-melt operation. Chemical and metallographic analyses are performed, and the results are discussed. The hardness of the titanium decreases by prolonging the time of the electron beam processing. A maximal overall removal efficiency of 99.975% is seen at 5.5 kW beam power for a 40 min melting time and the best purification of Ti (99.996%) is achieved.

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“…Titanium is widely used in the aerospace and chemical plant industries due to its excellent corrosion resistance and specific strength [1]. Moreover, titanium has received tremendous attention as a material for in-vivo implants owing to its excellent biocompatibility [2,3]. However, titanium has a low thermal conductivity, high driving force for oxidation, and a limited number of slip systems [4].…”

Section: Introductionmentioning

confidence: 99%

Improvement of mechanical properties of cast pure titanium by repeated heat treatment

Jung

Choi

Lee

et al. 2019

Materials Science and Technology

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Pure titanium components fabricated by casting have a coarse grain microstructure. To improve the mechanical strength of pure titanium components by refining the grain size, the cast samples were repeatedly heat-treated. During the heat treatment, the titanium samples were repeatedly heated above the alpha-to-beta ( α– β) transition temperature and cooled to room temperature to undergo phase transformation. The heating cycle was performed 1, 3, 5, and 7 times. As the number of heating cycles increased, the grain size decreased. The tensile strength was 267.9 MPa in the as-cast sample and improved to 343.4 MPa after 7 heat-treatment cycles owing to the grain size refinement, while the elongation was maintained during the heat treatment. This paper is part of a thematic issue on Titanium.

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Refining effect of electron beam melting on additive manufacturing of pure titanium products

Cited by 35 publications

References 16 publications

Impact Assessment of Additive Manufacturing on Sustainable Business Models in Industry 4.0 Context

Impact Assessment of Additive Manufacturing on Sustainable Business Models in Industry 4.0 Context

Effect of Electron Beam Method on Processing of Titanium Technogenic Material

Improvement of mechanical properties of cast pure titanium by repeated heat treatment

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