Radiation Damage Suppression in AISI-316 Steel Nanoparticles: Implications for the Design of Future Nuclear Materials

被引:4
作者
Aradi, Emily [2 ,3 ]
Tunes, Matheus A. [1 ]
Lewis-Fell, Jacob [2 ]
Greaves, Graeme [2 ]
Antrekowitsch, Helmut [1 ]
Pogatscher, Stefan [1 ]
Donnelly, Stephen E. [2 ]
Hinks, Jonathan A. [2 ]
机构
[1] Univ Leoben, Chair Nonferrous Met, A-8700 Leoben, Austria
[2] Univ Huddersfield, Sch Comp & Engn, Huddersfield HD1 3DH, W Yorkshire, England
[3] Univ Manchester, Sch Mech Aeronaut & Chem Engn, Manchester M13 9PL, Lancs, England
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
nanoporous materials; nanoparticles; radiation damage; ion irradiation; transmission electron microscopy; AUSTENITIC STAINLESS-STEELS; INDUCED SEGREGATION; MICROSTRUCTURAL EVOLUTION; MATERIALS CHALLENGES; NEUTRON-IRRADIATION; SINK STRENGTHS; IN-SITU; PRECIPITATION; RECOVERY; BEHAVIOR;
D O I
10.1021/acsanm.0c01611
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The self-healing capability of point and extended defects that are introduced by energetic particle irradiation is a desired behavior to be attained in the design and selection in potential materials for application in extreme environments. Nanoporous materials have a potential for achieving higher radiation tolerance due to the presence of many active unsaturable surfaces to which defects may diffuse and thus be effectively annihilated. The effects of heavy ion collisions in the lattice of functional AISI-316 steel nanoparticles (NPs).which serve as a model for the ligaments in a nanoporous.are herein investigated in situ within a transmission electron microscope. Comparisons are made directly with AISI-316 steel in the form of foils, and the results show that the fewer radiation-induced defect clusters form in the NPs and that small NPs (r < 50 nm) were observed to accumulate fewer defects when compared to larger NPs. Post-irradiation analytical characterization within a scanning transmission electron microscope revealed that the AISI-316 steel NPs may develop a radiation-induced self-passivation driven by a solute-drag mechanism: an effect that can potentially enhance their radiation corrosion resistance in the expected extreme conditions of a reactor. The capability of an NP to self-heal irradiation-induced point defects is investigated using the cellular model for active internal and surface sinks. The design of functional nanoscale materials for extreme environments is discussed.
引用
收藏
页码:9652 / 9662
页数:11
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