Irradiation-induced grain growth in nanocrystalline reduced activation ferrite/martensite steel

W. B. Liu; C. Zhang; Y. Z. Ji; Z. G. Yang; H. Zang; T. L. Shen; L. Q. Chen

doi:10.1063/1.4896677

Irradiation-induced grain growth in nanocrystalline reduced activation ferrite/martensite steel

W. B. Liu, C. Zhang, Y. Z. Ji, Z. G. Yang, H. Zang, T. L. Shen, L. Q. Chen

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22 Scopus citations

Abstract

In this work, we investigate the microstructure evolution of surface-nanocrystallized reduced activation ferrite/martensite steels upon high-dose helium ion irradiation (24.3 dpa). We report a significant irradiation-induced grain growth in the irradiated buried layer at a depth of 300-500 nm, rather than at the peak damage region (at a depth of ∼840 nm). This phenomenon can be explained by the thermal spike model: minimization of the grain boundary (GB) curvature resulting from atomic diffusion in the cascade center near GBs.

Original language	English (US)
Article number	121905
Journal	Applied Physics Letters
Volume	105
Issue number	12
DOIs	https://doi.org/10.1063/1.4896677
State	Published - Sep 22 2014

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4896677

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title = "Irradiation-induced grain growth in nanocrystalline reduced activation ferrite/martensite steel",

abstract = "In this work, we investigate the microstructure evolution of surface-nanocrystallized reduced activation ferrite/martensite steels upon high-dose helium ion irradiation (24.3 dpa). We report a significant irradiation-induced grain growth in the irradiated buried layer at a depth of 300-500 nm, rather than at the peak damage region (at a depth of ∼840 nm). This phenomenon can be explained by the thermal spike model: minimization of the grain boundary (GB) curvature resulting from atomic diffusion in the cascade center near GBs.",

author = "Liu, {W. B.} and C. Zhang and Ji, {Y. Z.} and Yang, {Z. G.} and H. Zang and Shen, {T. L.} and Chen, {L. Q.}",

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T1 - Irradiation-induced grain growth in nanocrystalline reduced activation ferrite/martensite steel

AU - Liu, W. B.

AU - Zhang, C.

AU - Ji, Y. Z.

AU - Yang, Z. G.

AU - Zang, H.

AU - Shen, T. L.

AU - Chen, L. Q.

PY - 2014/9/22

Y1 - 2014/9/22

N2 - In this work, we investigate the microstructure evolution of surface-nanocrystallized reduced activation ferrite/martensite steels upon high-dose helium ion irradiation (24.3 dpa). We report a significant irradiation-induced grain growth in the irradiated buried layer at a depth of 300-500 nm, rather than at the peak damage region (at a depth of ∼840 nm). This phenomenon can be explained by the thermal spike model: minimization of the grain boundary (GB) curvature resulting from atomic diffusion in the cascade center near GBs.

AB - In this work, we investigate the microstructure evolution of surface-nanocrystallized reduced activation ferrite/martensite steels upon high-dose helium ion irradiation (24.3 dpa). We report a significant irradiation-induced grain growth in the irradiated buried layer at a depth of 300-500 nm, rather than at the peak damage region (at a depth of ∼840 nm). This phenomenon can be explained by the thermal spike model: minimization of the grain boundary (GB) curvature resulting from atomic diffusion in the cascade center near GBs.

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Irradiation-induced grain growth in nanocrystalline reduced activation ferrite/martensite steel

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