Fabrication of porous CoCrFeMnNi high entropy alloy using binder jetting additive manufacturing

Xu, Zhaowen; Zhu, Ze‐Lin; Wang, Pan; Meenashisundaram, Ganesh Kumar; Nai, Mui Ling Sharon; Wei, Jun

doi:10.1016/j.addma.2020.101441

Cited by 20 publications

(6 citation statements)

References 48 publications

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“… 42 The compressive strength of 3DPSS with a wire mesh diameter of 100 μm was comparable to that of a porous high entropy alloy. 43 Therefore, 3DPSS has wide application prospects due to its light weight, microporous structure, and excellent permeability and compressive mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of permeability and mechanical properties of three-dimensional porous stainless steel

Zhou

2022

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Preparation and characterization of permeability and mechanical properties of three-dimensional porous stainless steel

Zhou

2022

RSC Adv.

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“…The concept of using AM technologies to produce HEA components was initially introduced by Kunce et al in 2013 [16], and was later investigated by other researchers [17][18][19][20]. In general, the research relating to AM of HEA from pre-alloyed powder obtained mainly by gas atomization [21][22][23] can be divided into three main categories: (i) powder bed fusion, including laser powder bed fusion (LPBF) [24][25][26] and electron beam melting (EBM) [27,28]; (ii) direct energy deposition using blown powder deposition (BPD) [29][30][31]; and (iii) binder jetting [32].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Refractory High-Entropy Alloy WTaMoNbV by Powder Bed Fusion Process Using Mixed Elemental Alloying Powder

et al. 2022

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The growing interest in refractory high-entropy alloys (HEAs) in the last decade is mainly due to their thermal stability, outstanding mechanical properties, and excellent corrosion resistance. However, currently HEAs are still not considered for use as common structural materials due to their inherent drawbacks in terms of processing and machining operations. The recent progress witnessed in additive manufacturing (AM) technologies has raised the option of producing complex components made of HEAs with minimal machining processes. So far, this could be achieved by using pre-alloyed powders of HEAs that were mainly produced by a conventional arc melting furnace (AMF) in the form of small compounds that were transformed into powder via a gas atomization process. To significantly reduce the production cost, the present study aims to analyze the ability to synthesize HEA WTaMoNbV via a laser powder bed fusion (LPBF) process using mixed elemental alloying powder as the raw material. For comparison, a counterpart alloy with the same chemical composition was analyzed and produced by an AMF process. The microstructures of the tested alloys were examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) analyses. The physical properties were evaluated in terms of density and mechanical strength, while the electrochemical behavior was assessed by potentiodynamic polarization analysis. The results disclosed similarities in microstructure, physical properties and electrochemical behavior between HEA WTaMoNbV manufactured by the proposed LPBF process and its counterpart alloy produced by an AMF process.

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“…Zhang X. et al provided an approach of laser metal deposition of the CoCrFeMnNi HEA-based composites and observed nonporous, compact, and two-phase microstructure of FCC matrix and precipitates [13]. Binder jetting additive manufacturing was successfully applied to fabricate porous CoCrFeMnNi HEA [14]. The methods mentioned above are very accurate, but the sizes of the chamber typically limit the size of the parts that can be fabricated.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Co-Cr-Fe-Mn-Ni Non-Equiatomic High-Entropy Alloy Fabricated by Wire Arc Additive Manufacturing

Осинцев

Konovalov

Zagulyaev

et al. 2022

Metals

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Fabrication of high-entropy alloys (HEAs) is a crucial area of interest for materials scientists since these metallic materials may have many practical uses. Wire arc additive manufacturing (WAAM), unlike other additive technologies, has tangible benefits for making large-sized components, but manufacturing the wire from HEAs is still very limited. Recent studies suggested tackling this problem using a combined cable composed of wires consisting of pure elements as feeding material. However, not all compositions of HEAs can be obtained by the pure elements’ wires because the number of them is limited. This study aims to examine phase composition, chemical elements distribution, microstructure, and mechanical properties of a Co-Cr-Fe-Mn-Ni HEA, which was not previously obtained by the WAAM. The cable-type wire used in this study is composed of two wires which consist of Cr, Fe, Mn, and Ni, and one pure Co wire. The phase composition, chemical elements distribution, microstructure, and mechanical properties were investigated. The prepared high-entropy alloy has non-equiatomic chemical composition with a single-phase FCC crystal structure with homogeneously distributed elements inside the grains. The microstructure examinations showed dendrite structure which is typical for WAAM processes. The compressive yield strength of the alloy is ~279 MPa, the ultimate compressive strength is ~1689 MPa, the elongation is 63%, and the microhardness is ~150 HV, which was found to be similar to the previously fabricated Co-Cr-Fe-Mn-Ni alloys by other methods. Fracture analysis confirmed the ductile behavior of deformation by the presence of dimples.

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Fabrication of porous CoCrFeMnNi high entropy alloy using binder jetting additive manufacturing

Cited by 20 publications

References 48 publications

Preparation and characterization of permeability and mechanical properties of three-dimensional porous stainless steel

Preparation and characterization of permeability and mechanical properties of three-dimensional porous stainless steel

Synthesis of Refractory High-Entropy Alloy WTaMoNbV by Powder Bed Fusion Process Using Mixed Elemental Alloying Powder

Investigation of Co-Cr-Fe-Mn-Ni Non-Equiatomic High-Entropy Alloy Fabricated by Wire Arc Additive Manufacturing

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