A promising CoFeNi                         2                         V                         0.5                         Mo                         0.2                          high entropy alloy with exceptional ductility

L. Jiang; Y. P. Lu; M. Song; C. Lu; K. Sun; Z. Q. Cao; T. M. Wang; F. Gao; L. M. Wang

doi:10.1016/j.scriptamat.2019.02.038

A promising CoFeNi ₂ V _0.5 Mo _0.2 high entropy alloy with exceptional ductility

L. Jiang
, Y. P. Lu
, M. Song
, C. Lu
, K. Sun
, Z. Q. Cao
, T. M. Wang
, F. Gao
, L. M. Wang

School of Energy and Power Engineering

University of Michigan, Ann Arbor
Dalian University of Technology

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

A novel high entropy alloy with the composition of CoFeNi ₂ V _0.5 Mo _0.2 , shows unusual strain hardening ability and an excellent combination of ductility and strength. Especially at 873 K, the elongation can reach 189.2%, almost three times that of the common high temperature alloys. Microstructural characterization suggests a coexistence of planar slip and cross slip. The resistance of planar slip serves to strengthen the alloy, while the cross slip effectively relieves strain concentration, substantially contributing to the uniform elongation. Also, the interaction of planar slip and cross slip will lead to the formation of two kinds of dislocation loops.

Original language	English
Pages (from-to)	128-133
Number of pages	6
Journal	Scripta Materialia
Volume	165
DOIs	https://doi.org/10.1016/j.scriptamat.2019.02.038
State	Published - May 2019

Keywords

High entropy alloys
High temperature properties
Strain hardening
Synchrotron X-ray diffraction
Transmission electron microscopy

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10.1016/j.scriptamat.2019.02.038

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Jiang, L., Lu, Y. P., Song, M., Lu, C., Sun, K., Cao, Z. Q., Wang, T. M., Gao, F., & Wang, L. M. (2019). A promising CoFeNi ₂ V _0.5 Mo _0.2 high entropy alloy with exceptional ductility Scripta Materialia, 165, 128-133. https://doi.org/10.1016/j.scriptamat.2019.02.038

@article{dc67a9f00d604d608021591ee2e9a420,

title = " A promising CoFeNi 2 V 0.5 Mo 0.2 high entropy alloy with exceptional ductility ",

abstract = " A novel high entropy alloy with the composition of CoFeNi 2 V 0.5 Mo 0.2 , shows unusual strain hardening ability and an excellent combination of ductility and strength. Especially at 873 K, the elongation can reach 189.2\%, almost three times that of the common high temperature alloys. Microstructural characterization suggests a coexistence of planar slip and cross slip. The resistance of planar slip serves to strengthen the alloy, while the cross slip effectively relieves strain concentration, substantially contributing to the uniform elongation. Also, the interaction of planar slip and cross slip will lead to the formation of two kinds of dislocation loops.",

keywords = "High entropy alloys, High temperature properties, Strain hardening, Synchrotron X-ray diffraction, Transmission electron microscopy",

author = "L. Jiang and Lu, \{Y. P.\} and M. Song and C. Lu and K. Sun and Cao, \{Z. Q.\} and Wang, \{T. M.\} and F. Gao and Wang, \{L. M.\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = may,

doi = "10.1016/j.scriptamat.2019.02.038",

language = "英语",

volume = "165",

pages = "128--133",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

}

Jiang, L, Lu, YP, Song, M, Lu, C, Sun, K, Cao, ZQ, Wang, TM, Gao, F & Wang, LM 2019, ' A promising CoFeNi ₂ V _0.5 Mo _0.2 high entropy alloy with exceptional ductility ', Scripta Materialia, vol. 165, pp. 128-133. https://doi.org/10.1016/j.scriptamat.2019.02.038

A promising CoFeNi ₂ V _0.5 Mo _0.2 high entropy alloy with exceptional ductility . / Jiang, L.; Lu, Y. P.; Song, M. et al.
In: Scripta Materialia, Vol. 165, 05.2019, p. 128-133.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - A promising CoFeNi 2 V 0.5 Mo 0.2 high entropy alloy with exceptional ductility

AU - Jiang, L.

AU - Lu, Y. P.

AU - Song, M.

AU - Lu, C.

AU - Sun, K.

AU - Cao, Z. Q.

AU - Wang, T. M.

AU - Gao, F.

AU - Wang, L. M.

PY - 2019/5

Y1 - 2019/5

N2 - A novel high entropy alloy with the composition of CoFeNi 2 V 0.5 Mo 0.2 , shows unusual strain hardening ability and an excellent combination of ductility and strength. Especially at 873 K, the elongation can reach 189.2%, almost three times that of the common high temperature alloys. Microstructural characterization suggests a coexistence of planar slip and cross slip. The resistance of planar slip serves to strengthen the alloy, while the cross slip effectively relieves strain concentration, substantially contributing to the uniform elongation. Also, the interaction of planar slip and cross slip will lead to the formation of two kinds of dislocation loops.

AB - A novel high entropy alloy with the composition of CoFeNi 2 V 0.5 Mo 0.2 , shows unusual strain hardening ability and an excellent combination of ductility and strength. Especially at 873 K, the elongation can reach 189.2%, almost three times that of the common high temperature alloys. Microstructural characterization suggests a coexistence of planar slip and cross slip. The resistance of planar slip serves to strengthen the alloy, while the cross slip effectively relieves strain concentration, substantially contributing to the uniform elongation. Also, the interaction of planar slip and cross slip will lead to the formation of two kinds of dislocation loops.

KW - High entropy alloys

KW - High temperature properties

KW - Strain hardening

KW - Synchrotron X-ray diffraction

KW - Transmission electron microscopy

UR - https://www.scopus.com/pages/publications/85062189508

U2 - 10.1016/j.scriptamat.2019.02.038

DO - 10.1016/j.scriptamat.2019.02.038

M3 - 文章

AN - SCOPUS:85062189508

SN - 1359-6462

VL - 165

SP - 128

EP - 133

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Jiang L, Lu YP, Song M, Lu C, Sun K, Cao ZQ et al. A promising CoFeNi ₂ V _0.5 Mo _0.2 high entropy alloy with exceptional ductility Scripta Materialia. 2019 May;165:128-133. doi: 10.1016/j.scriptamat.2019.02.038

A promising CoFeNi ₂ V _0.5 Mo _0.2 high entropy alloy with exceptional ductility

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