Chemical evolution-induced strengthening on AlCoCrNi dual-phase high-entropy alloy with high specific strength

Jumaev, Elyorjon; Hong, Seung Hyun; Kim, Jeong Tae; Park, Hae Jin; Kim, Young Seok; Mun, Sang Chul; Park, Jun-Young; Song, Gian; Lee, Jong Kook; Min, Byung Ho; Lee, Tae-Gyu; Kim, Ki Buem

doi:10.1016/j.jallcom.2018.11.057

Cited by 70 publications

(16 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this process, the content of Ni increases significantly, and Si remains unchanged in the precipitated phase, while the content of Co decreases continuously. To some extent, it is reasonable to believe that the atomic content of Ni and Co in the alloy represents the proportion of Ni 2 Si and Co 2 Si in the precipitated phase [24]. Moreover, the average Ni/Co and (Ni + Co)/Si atomic ratios of the three alloys are calculated in Figure 9d.…”

Section: Resultsmentioning

confidence: 99%

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Jiang

Huang²,

Mi³

et al. 2019

Materials

View full text Add to dashboard Cite

The properties and microstructural evolution of quaternary Cu-Ni-Co-Si alloys with different Ni/Co mass ratios are investigated systematically. These alloys exhibit higher mechanical properties when the Ni/Co mass ratio is 1.12-1.95 (NC-4-NC-5) and show excellent electrical conductivity when the Ni/Co mass ratio is 0.05-0.5 (NC-1-NC-3). With an increase in the Ni/Co ratio, the dimension of precipitated phase continues to increase and the grain size also visibly grows and coarsens. At the same time, the precipitation process of the NC-5 alloy is the most adequate, resulting in the highest mechanical properties. In addition, the precipitated phase in the alloys was confirmed to be the (Ni, Co)2Si composite phase. The number of Ni2Si phases in the precipitated phase gradually increased, and the Ni atoms exhibited the strongest co-segregation alongside the increasing Ni/Co ratio. Compared with the alloy without a Co element, the addition of Co helped refine the grain size and accelerate the precipitation of the particle phase and purify solute atoms in the matrix, thereby simultaneously improving mechanical properties and conductivity. The present work provides a new method for the development of multicomponent Cu-Ni-Si-Co-X alloys with outstanding comprehensive performance.

show abstract

Section: Resultsmentioning

confidence: 99%

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Jiang

Huang²,

Mi³

et al. 2019

Materials

View full text Add to dashboard Cite

show abstract

“…Step 3: The value with correct units was updated in place of the originally recorded value. Original source reproduced with data from Jumaev et al 26 .…”

Section: Usage Notesmentioning

confidence: 99%

Expanded dataset of mechanical properties and observed phases of multi-principal element alloys

et al. 2020

View full text Add to dashboard Cite

This data article presents a compilation of mechanical properties of 630 multi-principal element alloys (MPEAs). Built upon recently published MPEA databases, this article includes updated records from previous reviews (with minor error corrections) along with new data from articles that were published since 2019. The extracted properties include reported composition, processing method, microstructure, density, hardness, yield strength, ultimate tensile strength (or maximum compression strength), elongation (or maximum compression strain), and Young’s modulus. Additionally, descriptors (e.g. grain size) not included in previous reviews were also extracted for articles that reported them. The database is hosted and continually updated on an open data platform, Citrination. To promote interpretation, some data are graphically presented.

show abstract

“…Several studies on AlNiCoCrFe HEA have shown only BCC (ordered and disordered) solid solution in AlNiCoCrFe HEA, as shown in Table 1. Moreover, FeNiCoCr [10] and AlNiCoCr [15] (four component alloys, often termed as medium entropy alloys) do not show IMCs as well. No presence of intermetallic compounds in NiCoCr, FeNiCoCr, AlNiCoCr, and FeNiCoCrAl suggests that high-entropy effect can be used to suppress the formation of IMC in Al-steel joints using interlayer of these alloys.…”

Section: High-entropy Interlayer (Hei)-an Unorthodox Approachmentioning

confidence: 99%

Can High-Entropy Interlayers Develop Intermetallic-Free Welded Joints of Dissimilar Metals?

Waseem

2020

Eng

View full text Add to dashboard Cite

The joining of two chemically dissimilar metals is a challenge due to the formation of hard and brittle intermetallic compounds (IMCs) in the diffusion layer. The joining of steel/Fe with aluminum (Al) and zirconium (Zr) alloy is particularly important for the automobile and nuclear industries, respectively. The Al–steel and Zr–steel joints produced by conventional fusion welding exhibit IMCs. The IMCs can enhance brittleness and cause catastrophic failure. This concept paper presents a novel idea of suppressing IMCs in welded joints using a high-entropy interlayer (HEI). It also discusses the potential candidates for HEIs and inspires research to exploit this new and promising research area.

show abstract

Chemical evolution-induced strengthening on AlCoCrNi dual-phase high-entropy alloy with high specific strength

Cited by 70 publications

References 39 publications

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Expanded dataset of mechanical properties and observed phases of multi-principal element alloys

Can High-Entropy Interlayers Develop Intermetallic-Free Welded Joints of Dissimilar Metals?

Contact Info

Product

Resources

About