On the development of pseudo-eutectic AlCoCrFeNi2.1 high entropy alloy using Powder-bed Arc Additive Manufacturing (PAAM) process

Dong, Bosheng; Wang, Zhiyang; Pan, Zengxi; Muránsky, Ondrej; Shen, Chen; Reid, Mark; Chen, Xizhang; Li, Huijun

doi:10.1016/j.msea.2020.140639

Cited by 50 publications

(9 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The local misorientation was extremely high at the fine-grain boundaries because the refined grains were hardly deformed. Dong et al [54] reported that the fine grains of the minor BCC phase formed by remelting at the boundaries of the relatively large columnar grains of the dominant FCC phase of AlCoCrFeNi HEA led to an increasing amount of local misorientation. Additionally, because the 0 • specimen bar lay along the base plate surface, the constraints by the base plate surface could cause thermal strain in the whole area of the cross-section in observing the microstructure (Figure 11).…”

Section: Results Of Tensile Testsmentioning

confidence: 99%

Influences of Process Parameters on the Microstructure and Mechanical Properties of CoCrFeNiTi Based High-Entropy Alloy in a Laser Powder Bed Fusion Process

et al. 2021

View full text Add to dashboard Cite

Recently, high-entropy alloys (HEAs) have attracted much attention because of their superior properties, such as high strength and corrosion resistance. This study aimed to investigate the influences of process parameters on the microstructure and mechanical properties of CoCrFe NiTiMo HEAs using a laser-based powder bed fusion (LPBF) process. In terms of laser power and scan speed, a process map was constructed by evaluating the density and surface roughness of the as-built specimen to optimize the process parameters of the products. The mechanical properties of the as-built specimens fabricated at the optimum fabrication condition derived from the process map were evaluated. Consequently, the optimum laser power and scan speed could be obtained using the process map evaluated by density and surface roughness. The as-built specimen fabricated at the optimum fabrication condition presented a relative density of more than 99.8%. The microstructure of the as-built specimen exhibited anisotropy along the build direction. The tensile strength and elongation of the as-built specimen were around 1150 MPa and more than 20%, respectively.

show abstract

Section: Results Of Tensile Testsmentioning

confidence: 99%

Influences of Process Parameters on the Microstructure and Mechanical Properties of CoCrFeNiTi Based High-Entropy Alloy in a Laser Powder Bed Fusion Process

et al. 2021

View full text Add to dashboard Cite

show abstract

“…CoCrFeNiNb x [242], Al x CoCrFeNi [243][244][245]259,264], AlCoCrFeNi 2.1 [246,264], AlCrFeMoV x [247], AlCoCrFeNiTi 0.5 [248], AlCrCuFeNi [249,263], AlCoCrFeNiCu/AlTiCrFeCoNi [250,251], NbMoTaW [252], TiZrNbMoV [253], NbMoTaTi x Ni x [260], CoCrFeNb 0.2 Ni 2.1 [265] and TiZrNbHfTa [254].…”

Section: Additive Manufacturing Of Heasmentioning

confidence: 99%

Recent Advances in Additive Manufacturing of High Entropy Alloys and Their Nuclear and Wear-Resistant Applications

Sonal

Lee

2021

Metals

View full text Add to dashboard Cite

Alloying has been very common practice in materials engineering to fabricate metals of desirable properties for specific applications. Traditionally, a small amount of the desired material is added to the principal metal. However, a new alloying technique emerged in 2004 with the concept of adding several principal elements in or near equi-atomic concentrations. These are popularly known as high entropy alloys (HEAs) which can have a wide composition range. A vast area of this composition range is still unexplored. The HEAs research community is still trying to identify and characterize the behaviors of these alloys under different scenarios to develop high-performance materials with desired properties and make the next class of advanced materials. Over the years, understanding of the thermodynamics theories, phase stability and manufacturing methods of HEAs has improved. Moreover, HEAs have also shown retention of strength and relevant properties under extreme tribological conditions and radiation. Recent progresses in these fields are surveyed and discussed in this review with a focus on HEAs for use under extreme environments (i.e., wear and irradiation) and their fabrication using additive manufacturing.

show abstract

“…Due to recent developments in the field of additive manufacturing, the combination of novel alloy concepts, such as complex concentrated alloys and additive manufacturing processes, is also becoming the focus of research. For example, studies have already been carried out on the use of CCAs for various powder-based additive manufacturing processes [7][8][9] and high throughput processes as well [10]. Besides the powder processes, CCAs are getting in the focus of other additive manufacturing, such as wire and arc additive manufacturing processes as well.…”

Section: Introductionmentioning

confidence: 99%

Wire and Arc Additive Manufacturing of a CoCrFeMoNiV Complex Concentrated Alloy Using Metal-Cored Wire—Process, Properties, and Wear Resistance

et al. 2022

View full text Add to dashboard Cite

The field of complex concentrated alloys offers a very large number of variations in alloy composition. The achievable range of properties varies greatly within these variants. The experimental determination of the properties is in many cases laborious. In this work, the possibility of using metal-cored wires to produce sufficient large samples for the determination of the properties using arc-based additive manufacturing or in detail wire and arc additive manufacturing (WAAM) is to be demonstrated by giving an example. In the example, a cored wire is used for the production of a CoCrFeNiMo alloy. In addition to the process parameters used for the additive manufacturing, the mechanical properties of the alloy produced in this way are presented and related to the properties of a cast sample with a similar chemical composition. The characterization of the resulting microstructure and wear resistance will complete this work. It will be shown that it is possible to create additively manufactured structures for a microstructure and a property determination by using metal-cored filler wires in arc-based additive manufacturing. In this case, the additively manufactured structure shows an FCC two-phased microstructure, a yield strength of 534 MPa, and a decent wear resistance.

show abstract

On the development of pseudo-eutectic AlCoCrFeNi2.1 high entropy alloy using Powder-bed Arc Additive Manufacturing (PAAM) process

Cited by 50 publications

References 51 publications

Influences of Process Parameters on the Microstructure and Mechanical Properties of CoCrFeNiTi Based High-Entropy Alloy in a Laser Powder Bed Fusion Process

Influences of Process Parameters on the Microstructure and Mechanical Properties of CoCrFeNiTi Based High-Entropy Alloy in a Laser Powder Bed Fusion Process

Recent Advances in Additive Manufacturing of High Entropy Alloys and Their Nuclear and Wear-Resistant Applications

Wire and Arc Additive Manufacturing of a CoCrFeMoNiV Complex Concentrated Alloy Using Metal-Cored Wire—Process, Properties, and Wear Resistance

Contact Info

Product

Resources

About