Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures

doi:10.1016/j.actamat.2016.04.005

Title: Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures

Full Record
Other Related Research

Authors:: Otto, F.; Dlouhý, A.; Pradeep, K. G.; Kuběnová, M.; Raabe, D.; Eggeler, G.; George, E. P.

Publication Date:: 2016-06-01

Sponsoring Org.:: USDOE

OSTI Identifier:: 1351006

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Acta Materialia

Additional Journal Information:: Journal Name: Acta Materialia Journal Volume: 112 Journal Issue: C; Journal ID: ISSN 1359-6454

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Citation Formats


                    Otto, F., Dlouhý, A., Pradeep, K. G., Kuběnová, M., Raabe, D., Eggeler, G., and George, E. P. Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures.  United States: N. p., 2016. 
        Web.  doi:10.1016/j.actamat.2016.04.005.

Copy to clipboard


                    Otto, F., Dlouhý, A., Pradeep, K. G., Kuběnová, M., Raabe, D., Eggeler, G., & George, E. P. Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures.  United States.  doi:10.1016/j.actamat.2016.04.005.

Copy to clipboard


                    Otto, F., Dlouhý, A., Pradeep, K. G., Kuběnová, M., Raabe, D., Eggeler, G., and George, E. P. Wed .  
        "Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures".  United States.  doi:10.1016/j.actamat.2016.04.005.

Copy to clipboard


                    
@article{osti_1351006,

  title        = {Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures},

  author       = {Otto, F. and Dlouhý, A. and Pradeep, K. G. and Kuběnová, M. and Raabe, D. and Eggeler, G. and George, E. P.},

  abstractNote = {},

  doi          = {10.1016/j.actamat.2016.04.005},

  journal      = {Acta Materialia},

  number       = C,

  volume       = 112,

  place        = {United States},

  year         = {2016},

  month        = {6}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Publisher's Version of Record
DOI: 10.1016/j.actamat.2016.04.005

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 69 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Phase stability and kinetics of σ-phase precipitation in CrMnFeCoNi high-entropy alloys

Journal Article Laplanche, G. ; Berglund, S. ; Reinhart, C. ; ... - Acta Materialia

Although the phase stability of high-entropy alloys in the Cr-Mn-Fe-Co-Ni system has received considerable attention recently, knowledge of their thermodynamic equilibrium states and precipitation kinetics during high-temperature exposure is limited. In the present study, an off-equiatomic Cr₂₆Mn₂₀Fe₂₀Co₂₀Ni₁₄ high-entropy alloy was solutionized and isothermally aged at temperatures between 600 °C and 1000 °C for times to 1000 h. In the original single-phase fcc matrix, an intermetallic σ phase was found to form at all investigated temperatures. Its morphology and composition were determined and the precipitation kinetics analyzed using the Johnson-Mehl-Avrami-Kolmogorov equation and an Arrhenius type law. From these analyses, a time-temperature-transformationmore »« less
Cited by 14
DOI: 10.1016/j.actamat.2018.09.040
High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi

Journal Article Tracy, Cameron L. ; Park, Sulgiye ; Rittman, Dylan R. ; ... - Nature Communications

High pressure x-ray diffraction measurements reveal that the face-centered cubic (fcc) high-entropy alloy CrMnFeCoNi transforms martensitically to a hexagonal close-packed (hcp) phase at ~14 GPa. We attribute this to suppression of the local magnetic moments, destabilizing the fcc phase. Similar to fcc-to-hcp transformations in Al and the noble gases, this transformation is sluggish, occurring over a range of >40 GPa. But, the behavior of CrMnFeCoNi is unique in that the hcp phase is retained following decompression to ambient pressure, yielding metastable fcc-hcp mixtures.
Cited by 10
DOI: 10.1038/ncomms15634

Full Text Available
High pressure synthesis of a hexagonal close-packed phase of the high-entropy alloy CrMnFeCoNi

Journal Article Tracy, Cameron L. ; Park, Sulgiye ; Rittman, Dylan R. ; ... - Nature Communications

High-entropy alloys, near-equiatomic solid solutions of five or more elements, represent a new strategy for the design of materials with properties superior to those of conventional alloys. However, their phase space remains constrained, with transition metal high-entropy alloys exhibiting only face- or body-centered cubic structures. Here, we report the high-pressure synthesis of a hexagonal close-packed phase of the prototypical high-entropy alloy CrMnFeCoNi. This martensitic transformation begins at 14 GPa and is attributed to suppression of the local magnetic moments, destabilizing the initial fcc structure. Similar to fcc-to-hcp transformations in Al and the noble gases, the transformation is sluggish, occurring overmore »« less
DOI: 10.1038/ncomms15634
EFFECTS OF NICKEL ADMIXTURES ON THE PHASE TRANSFORMATIONS IN Al-Cu ALLOYS AT PROLONGED HIGH TEMPERATURE ANNEALING (in Russian)

Journal Article Zhmudskii, A Z ; Maksimyuk, P A - Metalloved. i Obrabotka Metal

The admixture of nickel retards the diffusion processes in Al - Cu - Ni alloys rt elevrted amperature and increases the heat resistance of aluminum alloys.. (R.V.J)
Real-time observations of TRIP-induced ultrahigh strain hardening in a dual-phase CrMnFeCoNi high-entropy alloy

Journal Article Chen, Sijing ; Oh, Hyun Seok ; Gludovatz, Bernd ; ... - Nature Communications

Strategies involving metastable phases have been the basis of the design of numerous alloys, yet research on metastable high-entropy alloys is still in its infancy. In dual-phase high-entropy alloys, the combination of local chemical environments and loading-induced crystal structure changes suggests a relationship between deformation mechanisms and chemical atomic distribution, which we examine in here in a Cantor-like Cr₂₀Mn₆Fe₃₄Co₃₄Ni₆ alloy, comprising both face-centered cubic (fcc) and hexagonal closed packed (hcp) phases. We observe that partial dislocation activities result in stable three-dimensional stacking-fault networks. Additionally, the fraction of the stronger hcp phase progressively increases during plastic deformation by forming at themore »« less
DOI: 10.1038/s41467-020-14641-1

Full Text Available

Similar Records