Strengthening of ferrous binder jet 3D printed components through bronze infiltration

Cordero, Zachary C.; Siddel, Derek; Peter, William H.; Elliott, Amy M.

doi:10.1016/j.addma.2017.03.011

Cited by 37 publications

(16 citation statements)

References 14 publications

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“…For the stainless steel materials, a low melting material such as bronze is used as an infiltrant which can fill the open pores of the printed powder to improve the final density [4,26]. Cordero et al [105] manufactured ferrous powder via BJ using molten bronze as infiltrant and reported that infiltration could improve the strength of the sintered component by eliminating the stress concentration points at interparticle necks as shown in Figure 13…”

Section: Infiltrationmentioning

confidence: 99%

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A Review on Binder Jet Additive Manufacturing of 316L Stainless Steel

Mirzababaei

Pasebani

2019

JMMP

126

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Binder jet additive manufacturing enables the production of complex components for numerous applications. Binder jetting is the only powder bed additive manufacturing process that is not fusion-based, thus manufactured parts have no residual stresses as opposed to laser-based additive manufacturing processes. Binder jet technology can be adopted for the production of various small and large metallic parts for specific applications, including in the biomedical and energy sectors, at a lower cost and shorter lead time. One of the most well-known types of stainless steels for various industries is 316L, which has been extensively manufactured using binder jet technology. Binder jet manufactured 316L parts have obtained near full density and, in some cases, similar mechanical properties compared to conventionally manufactured parts. This article introduces methods, principles, and applications of binder jetting of SS 316L. Details of binder jetting processes, including powder characteristics (shape and size), binder properties (binder chemistry and droplet formation mechanism), printing process parameters (such as layer thickness, binder saturation, drying time), and post-processing sintering mechanism and densification processes, are carefully reviewed. Furthermore, critical factors in the selection of feedstock, printing parameters, sintering temperature, time, atmosphere, and heating rate of 316L binder jet manufactured parts are highlighted and summarized. Finally, the above-mentioned processing parameters are correlated with final density and mechanical properties of 316L components to establish a guideline on feedstock selection and process parameters optimization to achieve desired density, structure and properties for various applications.

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Section: Infiltrationmentioning

confidence: 99%

“…Process. 2019, 3, x FOR PEER REVIEW 16 of Backscatter electron micrograph of the infiltrated ferrous material with bronze infiltrant[105].…”

mentioning

confidence: 99%

A Review on Binder Jet Additive Manufacturing of 316L Stainless Steel

Mirzababaei

Pasebani

2019

JMMP

126

View full text Add to dashboard Cite

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“…No need to design nor use supports Limited success in producing metallic parts Unused powder can be reused Worse mechanical properties than powder bed fusion processes Wide range of materials Low density Fast process Large build size Requirement of post processing (sintering/infiltration) Although this technique is mainly used for ceramic materials, for example to obtain sand molds and cores in the sand casting process [27], it is also employed for metal matrices [28]. For example, iron parts with enhanced strength are obtained by means of bronze infiltration [29]. However, the high density of metals makes them less stable than other materials, and the fine particles can be prone to oxidation [26].…”

Section: Advantages Disadvantagesmentioning

confidence: 99%

Development of AM Technologies for Metals in the Sector of Medical Implants

Buj-Corral

Tejo-Otero

Fenollosa-Artés

2020

Metals

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Additive manufacturing (AM) processes have undergone significant progress in recent years, having been implemented in sectors as diverse as automotive, aerospace, electrical component manufacturing, etc. In the medical sector, different devices are printed, such as implants, surgical guides, scaffolds, tissue engineering, etc. Although nowadays some implants are made of plastics or ceramics, metals have been traditionally employed in their manufacture. However, metallic implants obtained by traditional methods such as machining have the drawbacks that they are manufactured in standard sizes, and that it is difficult to obtain porous structures that favor fixation of the prostheses by means of osseointegration. The present paper presents an overview of the use of AM technologies to manufacture metallic implants. First, the different technologies used for metals are presented, focusing on the main advantages and drawbacks of each one of them. Considered technologies are binder jetting (BJ), selective laser melting (SLM), electron beam melting (EBM), direct energy deposition (DED), and material extrusion by fused filament fabrication (FFF) with metal filled polymers. Then, different metals used in the medical sector are listed, and their properties are summarized, with the focus on Ti and CoCr alloys. They are divided into two groups, namely ferrous and non-ferrous alloys. Finally, the state-of-art about the manufacture of metallic implants with AM technologies is summarized. The present paper will help to explain the latest progress in the application of AM processes to the manufacture of implants.

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“…The binder is removed by burning it off and the part is sintered and later for most of the cases, a second sintering is done at around 80% of the melt temperature for a denser part. In some cases of ferrous alloys, to create a fully dense part, a liquid metal such as bronze is used as infiltrators [3]. The thermal stresses generated during the process are not so high leading to producibility of large metal parts.…”

Section: Fig 1 Schematic Of Materials Extrusion Printing Process 1) Hmentioning

confidence: 99%

Residual Stress Distributions in Additively Manufactured Parts : Effect of Build Orientation

Pant

2020

Linköping Studies in Science and Technology. Licentiate Thesis

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Additive manufacturing (AM) of parts using a layer by layer approach has seen a rapid increase in application for production of net shape or near-net shape complex parts, especially in the field of aerospace, automotive, etc. Due to the superiority of manufacturing complex shapes with ease in comparison to the conventional methods, interest in these kinds of processes has increased. Among various methods in AM, laser powder bed fusion (LPBF) is one of the most widely used techniques to produce metallic components.

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Strengthening of ferrous binder jet 3D printed components through bronze infiltration

Cited by 37 publications

References 14 publications

A Review on Binder Jet Additive Manufacturing of 316L Stainless Steel

A Review on Binder Jet Additive Manufacturing of 316L Stainless Steel

Development of AM Technologies for Metals in the Sector of Medical Implants

Residual Stress Distributions in Additively Manufactured Parts : Effect of Build Orientation

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