Self-ion irradiation response of (CoCrFeNi)94Ti2Al4 alloy containing coherent nanoprecipitates

Y. Zheng; W. Lu; F. Qian; N. Jia; Y. Dou; X. He; W. Yang; J. Wang; Y. Xue; K. Jin

doi:10.1016/j.jnucmat.2021.152889

Self-ion irradiation response of (CoCrFeNi)₉₄Ti₂Al₄ alloy containing coherent nanoprecipitates

Y. Zheng, W. Lu^*, F. Qian, N. Jia, Y. Dou, X. He, W. Yang, J. Wang, Y. Xue, K. Jin

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

In order to investigate the impact of coherent nanoprecipitates on the irradiation-induced microstructural change in high-entropy alloys and the stability of nanoprecipitates under irradiation, the single-phase CoCrFeNi and the coherent nanoprecipitate-containing (CoCrFeNi)₉₄Ti₂Al₄ alloys were irradiated with 2.7 MeV Fe ions at 823 K. With the introduction of L1₂ coherent nanoprecipitates, the size of irradiation-induced dislocation loops is significantly reduced and the unfaulting of faulted loops is delayed. Unlike that both Ni and Co are segregated towards the loops in CoCrFeNi, the enrichment of Ni at loops is suppressed in (CoCrFeNi)₉₄Ti₂Al₄ with the co-existence of nanoprecipitates. Furthermore, although minor coarsening and dissolution of nanoprecipitates are observed after irradiation, the stability is enhanced compared with some conventional Ni-based alloys.

Original language	English
Article number	152889
Journal	Journal of Nuclear Materials
Volume	549
DOIs	https://doi.org/10.1016/j.jnucmat.2021.152889
Publication status	Published - Jun 2021

Keywords

Ion irradiation effect
L1 coherent nanoprecipitate
high-entropy alloys
irradiation stability

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10.1016/j.jnucmat.2021.152889

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@article{88f31bc6fb184d77ac51060961ad5caf,

title = "Self-ion irradiation response of (CoCrFeNi)94Ti2Al4 alloy containing coherent nanoprecipitates",

abstract = "In order to investigate the impact of coherent nanoprecipitates on the irradiation-induced microstructural change in high-entropy alloys and the stability of nanoprecipitates under irradiation, the single-phase CoCrFeNi and the coherent nanoprecipitate-containing (CoCrFeNi)94Ti2Al4 alloys were irradiated with 2.7 MeV Fe ions at 823 K. With the introduction of L12 coherent nanoprecipitates, the size of irradiation-induced dislocation loops is significantly reduced and the unfaulting of faulted loops is delayed. Unlike that both Ni and Co are segregated towards the loops in CoCrFeNi, the enrichment of Ni at loops is suppressed in (CoCrFeNi)94Ti2Al4 with the co-existence of nanoprecipitates. Furthermore, although minor coarsening and dissolution of nanoprecipitates are observed after irradiation, the stability is enhanced compared with some conventional Ni-based alloys.",

keywords = "Ion irradiation effect, L1 coherent nanoprecipitate, high-entropy alloys, irradiation stability",

author = "Y. Zheng and W. Lu and F. Qian and N. Jia and Y. Dou and X. He and W. Yang and J. Wang and Y. Xue and K. Jin",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = jun,

doi = "10.1016/j.jnucmat.2021.152889",

language = "English",

volume = "549",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Self-ion irradiation response of (CoCrFeNi)94Ti2Al4 alloy containing coherent nanoprecipitates

AU - Zheng, Y.

AU - Lu, W.

AU - Qian, F.

AU - Jia, N.

AU - Dou, Y.

AU - He, X.

AU - Yang, W.

AU - Wang, J.

AU - Xue, Y.

AU - Jin, K.

PY - 2021/6

Y1 - 2021/6

N2 - In order to investigate the impact of coherent nanoprecipitates on the irradiation-induced microstructural change in high-entropy alloys and the stability of nanoprecipitates under irradiation, the single-phase CoCrFeNi and the coherent nanoprecipitate-containing (CoCrFeNi)94Ti2Al4 alloys were irradiated with 2.7 MeV Fe ions at 823 K. With the introduction of L12 coherent nanoprecipitates, the size of irradiation-induced dislocation loops is significantly reduced and the unfaulting of faulted loops is delayed. Unlike that both Ni and Co are segregated towards the loops in CoCrFeNi, the enrichment of Ni at loops is suppressed in (CoCrFeNi)94Ti2Al4 with the co-existence of nanoprecipitates. Furthermore, although minor coarsening and dissolution of nanoprecipitates are observed after irradiation, the stability is enhanced compared with some conventional Ni-based alloys.

AB - In order to investigate the impact of coherent nanoprecipitates on the irradiation-induced microstructural change in high-entropy alloys and the stability of nanoprecipitates under irradiation, the single-phase CoCrFeNi and the coherent nanoprecipitate-containing (CoCrFeNi)94Ti2Al4 alloys were irradiated with 2.7 MeV Fe ions at 823 K. With the introduction of L12 coherent nanoprecipitates, the size of irradiation-induced dislocation loops is significantly reduced and the unfaulting of faulted loops is delayed. Unlike that both Ni and Co are segregated towards the loops in CoCrFeNi, the enrichment of Ni at loops is suppressed in (CoCrFeNi)94Ti2Al4 with the co-existence of nanoprecipitates. Furthermore, although minor coarsening and dissolution of nanoprecipitates are observed after irradiation, the stability is enhanced compared with some conventional Ni-based alloys.

KW - Ion irradiation effect

KW - L1 coherent nanoprecipitate

KW - high-entropy alloys

KW - irradiation stability

UR - http://www.scopus.com/inward/record.url?scp=85102280039&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2021.152889

DO - 10.1016/j.jnucmat.2021.152889

M3 - Article

AN - SCOPUS:85102280039

SN - 0022-3115

VL - 549

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

M1 - 152889

ER -

Self-ion irradiation response of (CoCrFeNi)₉₄Ti₂Al₄ alloy containing coherent nanoprecipitates

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Keywords

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