Structure and Properties of Some CoCrFeNi‐Based High Entropy Alloys

Cornide, J.; Dahlborg, U.; Leong, Zhaoyuan; Domínguez, L.; Jouen, Samuel; Hansen, T.; Wunderlich, R.; Chambreland, S.; Todd, Iain; Goodall, Russell; Dahlborg, M.

doi:10.1002/9781119093466.ch139

Cited by 8 publications

(29 citation statements)

References 13 publications

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“…However, recently it was reported that CCFN alloys homogenized for a long time at high temperature are not single-phase but a coherent mixture of two solid solutions [6]. This conforms to the present study as well as to the earlier findings in [9,35,36] where composition fluctuations as well as fluctuations in the lattice constants as a function of position were reported in an as-cast CCFN ingot produced by arc melting and subsequent casting.…”

Section: Introductionsupporting

confidence: 82%

“…The difference in absolute value of the derived lattice constants in the literature is due to different production techniques as well as to experimental resolution effects [36]. the main structure is of fcc type and that the unit cell increases in size with increasing Pd content [9,35,36]. The diffraction peak intensities vary with scattering angle in all sets of measurements in a way indicating a pronounced texture in the samples.…”

Section: Effect Of Heat Treatments On the Structure Of Ccf Y Nmentioning

confidence: 93%

“…The diffraction peak intensities vary with scattering angle in all sets of measurements in a way indicating a pronounced texture in the samples. However, it was also noted in [9,36] that all peaks are asymmetric and can be divided into components suggesting the existence of several coexisting phases in the alloys. The suggestion is fully confirmed by the HEXRD measurements in which the experimental resolution is of the order of 10 -4 .…”

Section: Effect Of Heat Treatments On the Structure Of Ccf Y Nmentioning

confidence: 99%

“…Other papers will deal with alloy microstructure as well as with physical and magnetic properties of alloys with similar compositions and will be published in close connection to the present work [39,40].…”

Section: Introductionmentioning

confidence: 99%

“…However, there are very few, if any, HEAs that are truly single phase. Many of the alloys taken to meet the current definition of a HEA alloy are in reality multiphase with in most cases one main phase and one or several minor phases [8,9]. Thus, the original definition of a HEA has to be reconsidered and several approaches to this have been made (see for example [10,11]).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Structure of some CoCrFeNi and CoCrFeNiPd multicomponent HEA alloys by diffraction techniques

Dahlborg

Cornide

Calvo-Dahlborg

et al. 2016

Journal of Alloys and Compounds

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Section: Introductionsupporting

confidence: 82%

Section: Effect Of Heat Treatments On the Structure Of Ccf Y Nmentioning

confidence: 93%

Section: Effect Of Heat Treatments On the Structure Of Ccf Y Nmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Structure of some CoCrFeNi and CoCrFeNiPd multicomponent HEA alloys by diffraction techniques

Dahlborg

Cornide

Calvo-Dahlborg

et al. 2016

Journal of Alloys and Compounds

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Pairwise dilatational strain as a parametric model describing potential secondary phase formation and high-angle grain misorientation in as-cast high-entropy alloys

Leong¹,

Huang

Wróbel

et al. 2022

Intermetallics

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Hume-Rothery for HEA classification and self-organizing map for phases and properties prediction

Calvo-Dahlborg

Brown

2017

Journal of Alloys and Compounds

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The Hume-Rothery approach applied in terms of e/a to classify and design quasicrystals and BMG is revisited for the case of HEAs. The results were compared with other parameters used in the literature, namely VEC and delta. The Self-Organizing Map tool is used to classify the experimental results and the experimental map is used to compare the predictions of phases and properties of compositions reported in the literature. According to the Hume-Rothery approach e/a and the average radius can give a precise rule of thumb to identify the domain of stability of HEAs and to estimate the phases that may occur in the alloy: i) e/a< 1.65: fcc, ii) 1.65< e/a < 2.05: mixed phases including in particular sigma, iii) e/a > 2.05: bcc. Moreover, e/a is to be preferred to VEC to classify phases in HEAs and the simple combination of e/a and r give more accurate estimation than complex approaches based on DOS and VEC. Self-organizing maps can be used to make interpolative predictions for new compositions of HEAs with suitable phases for specific properties.

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Structure and Properties of Some CoCrFeNi‐Based High Entropy Alloys

Cited by 8 publications

References 13 publications

Structure of some CoCrFeNi and CoCrFeNiPd multicomponent HEA alloys by diffraction techniques

Structure of some CoCrFeNi and CoCrFeNiPd multicomponent HEA alloys by diffraction techniques

Pairwise dilatational strain as a parametric model describing potential secondary phase formation and high-angle grain misorientation in as-cast high-entropy alloys

Hume-Rothery for HEA classification and self-organizing map for phases and properties prediction

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