A New Approach for a Flexible Powder Production for Additive Manufacturing

Dietrich, Simone; Wunderer, M.; Huissel, A.; Zaeh, Michael F.

doi:10.1016/j.promfg.2016.11.012

Cited by 44 publications

(17 citation statements)

References 27 publications

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“…This may encourage consumers to stick with GA grades since plasma routes are relatively more expensive. Meanwhile, research and industry players are also studying various means to improve the yield of spherical particles through the WA process [52][53][54] as well as thermal spraying methods [55] to seek cost-effective feedstock production solutions and lower the costs of AM powders.…”

Section: Production Techniquesmentioning

confidence: 99%

An overview of powder granulometry on feedstock and part performance in the selective laser melting process

Tan

Wong

Dalgarno

2017

Additive Manufacturing

207

154

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Section: Production Techniquesmentioning

confidence: 99%

An overview of powder granulometry on feedstock and part performance in the selective laser melting process

Tan

Wong

Dalgarno

2017

Additive Manufacturing

207

154

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“…Another concern for further development of AM TiAl is the commercial availability of intermetallic alloys powders with properties suitable for their application in AM. Gas and plasma atomization are currently the most common processes used for the fabrication of spherical powders for L-PBF or SEBM technologies [20,21]. While atomization techniques allow manufacturing of spherical powders, these technologies are rather costly, especially considering the complex compositions of intermetallic alloys.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Ti-48Al-2Cr-2Nb Alloy Using Gas Atomized and Mechanically Alloyed Plasma Spheroidized Powders

et al. 2020

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In this paper, laser powder-bed fusion (L-PBF) additive manufacturing (AM) with a high-temperature inductive platform preheating was used to fabricate intermetallic TiAl-alloy samples. The gas atomized (GA) and mechanically alloyed plasma spheroidized (MAPS) powders of the Ti-48Al-2Cr-2Nb (at. %) alloy were used as the feedstock material. The effects of L-PBF process parameters—platform preheating temperature—on the relative density, microstructure, phase composition, and mechanical properties of printed material were evaluated. Crack-free intermetallic samples with a high relative density of 99.9% were fabricated using 900 °C preheating temperature. Scanning electron microscopy and X-Ray diffraction analyses revealed a very fine microstructure consisting of lamellar α2/γ colonies, equiaxed γ grains, and retained β phase. Compressive tests showed superior properties of AM material as compared to the conventional TiAl-alloy. However, increased oxygen content was detected in MAPS powder compared to GA powder (~1.1 wt. % and ~0.1 wt. %, respectively), which resulted in lower compressive strength and strain, but higher microhardness compared to the samples produced from GA powder.

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“…• New production methods, like small and flexible atomization plants where low amounts of completely new, often expensive, and high-quality powders may be produced [165][166][167]; • Powders with complex chemistry and controlled phase composition or even crystallinity, like amorphous metallic glasses [168][169][170], spinel powders [171], etc.…”

Section: Feedstock Used In Thermal Spray Processesmentioning

confidence: 99%

Review of Functionally Graded Thermal Sprayed Coatings

et al. 2020

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The paper briefly describes major thermal spray techniques used to spray functionally graded coatings such as atmospheric plasma spraying, high velocity oxy-fuel spraying, suspension and solution precursor plasma spraying, and finally low and high pressure cold gas spray method. The examples of combined spray processes as well as some examples of post spray treatment including laser and high temperature treatments or mechanical one, are described. Then, the solid and liquid feedstocks used to spray and their properties are shortly discussed. The reviewed properties of functional coatings include: (i) mechanical (adhesion, toughness, hardness); (ii) physical (porosity, thermal conductivity and diffusivity, thermal expansion, photo-catalytic activity), and; (iii) bioactivity and simulated body fluid (SBF) corrosion. These properties are useful in present applications of functionally graded coatings as thermal barriers, the bioactive coatings in prostheses, photo-catalytic coatings in water treatment, coatings used in printing industry (anilox and corona rolls). Finally, some of the future possible fields of functional thermal sprayed coatings applications are discussed, e.g., to coat polymer substrates or to use the cheap technology of low pressure cold gas spray method instead of expensive technology of vacuum plasma spraying to obtain bond coatings.

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A New Approach for a Flexible Powder Production for Additive Manufacturing

Cited by 44 publications

References 27 publications

An overview of powder granulometry on feedstock and part performance in the selective laser melting process

An overview of powder granulometry on feedstock and part performance in the selective laser melting process

Additive Manufacturing of Ti-48Al-2Cr-2Nb Alloy Using Gas Atomized and Mechanically Alloyed Plasma Spheroidized Powders

Review of Functionally Graded Thermal Sprayed Coatings

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