Deformation localisation in ion-irradiated Fe and Fe10Cr

被引：1

作者：

Song, Kay ^{[1
]}

Sheyfer, Dina ^{[2
]}

Liu, Wenjun ^{[2
]}

Tischler, Jonathan Z. ^{[2
]}

Das, Suchandrima ^{[3
]}

Mizohata, Kenichiro ^{[4
]}

Yu, Hongbing ^{[6
]}

Armstrong, David E. J. ^{[5
]}

Hofmann, Felix ^{[1
]}

机构：

[1] Univ Oxford, Dept Engn Sci, Parks Rd, Oxford OX1 3PJ, England

[2] Argonne Natl Lab, X Ray Sci Div, 9700 South Cass Ave, Argonne, IL 60439 USA

[3] Univ Bristol, Dept Mech Engn, Queens Bldg, Bristol BS8 1TR, England

[4] Univ Helsinki, Dept Phys, POB 43, Helsinki 00014, Finland

[5] Univ Oxford, Dept Mat, Parks Rd, Oxford OX1 3PH, England

[6] Canadian Nucl Labs, Chalk River, ON K0J 1J0, Canada

来源：

JOURNAL OF NUCLEAR MATERIALS | 2024年 / 596卷

基金：

英国工程与自然科学研究理事会; 欧洲研究理事会;

关键词：

Ferritic steels; Ion-irradiation; Plastic deformation; Atomic force microscopy; Synchrotron radiation; MECHANICAL-PROPERTIES; HELIUM-IMPLANTATION; MICROSTRUCTURE; CR; NANOINDENTATION; INDENTATION; IRON; MICROSCOPE; BEHAVIOR; HARDNESS;

D O I：

10.1016/j.jnucmat.2024.155104

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Determining the mechanisms for irradiation-induced ductility loss is crucial for the design of reactor structural components. Here, the deformation characteristics around nanoindents in Fe and Fe10Cr irradiated with Fe ions to similar to 1 displacement-per-atom at 313 K are non-destructively studied. Slip steps surrounding the nanoindents indicate that deformation is localised in the irradiated materials. Lattice rotation and strain fields near the indent site show over 87% confinement of plasticity in the irradiated material. Cr has little effect on the irradiationinduced changes in pile -up topography and deformation fields, suggesting it has limited impact on retaining strain hardening capacity and reducing irradiation-induced embrittlement.

引用

页数：7

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