1
|
Evaluation of irradiation hardening in ODS-Cu and non ODS-Cu by nanoindentation hardness test and micro-pillar compression test after self-ion irradiation. NUCLEAR MATERIALS AND ENERGY 2021. [DOI: 10.1016/j.nme.2021.100903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
2
|
Martínez E, Senninger O, Caro A, Soisson F, Nastar M, Uberuaga BP. Role of Sink Density in Nonequilibrium Chemical Redistribution in Alloys. PHYSICAL REVIEW LETTERS 2018; 120:106101. [PMID: 29570319 DOI: 10.1103/physrevlett.120.106101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 12/13/2017] [Indexed: 06/08/2023]
Abstract
Nonequilibrium chemical redistribution in open systems submitted to external forces, such as particle irradiation, leads to changes in the structural properties of the material, potentially driving the system to failure. Such redistribution is controlled by the complex interplay between the production of point defects, atomic transport rates, and the sink character of the microstructure. In this work, we analyze this interplay by means of a kinetic Monte Carlo (KMC) framework with an underlying atomistic model for the Fe-Cr model alloy to study the effect of ideal defect sinks on Cr concentration profiles, with a particular focus on the role of interface density. We observe that the amount of segregation decreases linearly with decreasing interface spacing. Within the framework of the thermodynamics of irreversible processes, a general analytical model is derived and assessed against the KMC simulations to elucidate the structure-property relationship of this system. Interestingly, in the kinetic regime where elimination of point defects at sinks is dominant over bulk recombination, the solute segregation does not directly depend on the dose rate but only on the density of sinks. This model provides new insight into the design of microstructures that mitigate chemical redistribution and improve radiation tolerance.
Collapse
Affiliation(s)
- Enrique Martínez
- Material Science and Technology Division, MST-8, Los Alamos National Laboratory, Los Alamos, 87545 New Mexico, USA
| | - Oriane Senninger
- DEN-Service de Recherches de Métallurgie Physique, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Alfredo Caro
- Material Science and Technology Division, MST-8, Los Alamos National Laboratory, Los Alamos, 87545 New Mexico, USA
| | - Frédéric Soisson
- DEN-Service de Recherches de Métallurgie Physique, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Maylise Nastar
- DEN-Service de Recherches de Métallurgie Physique, CEA, Université Paris-Saclay, F-91191, Gif-sur-Yvette, France
| | - Blas P Uberuaga
- Material Science and Technology Division, MST-8, Los Alamos National Laboratory, Los Alamos, 87545 New Mexico, USA
| |
Collapse
|
3
|
Patra A, Tomé CN. Finite element simulation of gap opening between cladding tube and spacer grid in a fuel rod assembly using crystallographic models of irradiation growth and creep. NUCLEAR ENGINEERING AND DESIGN 2017. [DOI: 10.1016/j.nucengdes.2017.02.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
4
|
Abe Y, Suzudo T, Jitsukawa S, Tsuru T, Tsukada T. Effects of Carbon Impurity on Microstructural Evolution in Irradiated α-Iron. FUSION SCIENCE AND TECHNOLOGY 2017. [DOI: 10.13182/fst12-a14126] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yosuke Abe
- Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-Mura, Ibaraki 319-1106, Japan
| | - Tomoaki Suzudo
- Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-Mura, Ibaraki 319-1106, Japan
| | - Shiro Jitsukawa
- Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-Mura, Ibaraki 319-1106, Japan
| | - Tomohito Tsuru
- Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-Mura, Ibaraki 319-1106, Japan
| | - Takashi Tsukada
- Japan Atomic Energy Agency, 2-4 Shirakatashirane, Tokai-Mura, Ibaraki 319-1106, Japan
| |
Collapse
|
5
|
Yu KY, Chen Y, Li J, Liu Y, Wang H, Kirk MA, Li M, Zhang X. Measurement of Heavy Ion Irradiation Induced In-Plane Strain in Patterned Face-Centered-Cubic Metal Films: An in Situ Study. NANO LETTERS 2016; 16:7481-7489. [PMID: 27960484 DOI: 10.1021/acs.nanolett.6b03195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanocrystalline Ag, Cu, and Ni thin films and their coarse grained counterparts are patterned using focused ion beam and then irradiated by Kr ions within an electron microscope at room temperature. Irradiation induced in-plane strain of the films is measured by tracking the location of nanosized holes. The magnitude of the strain in all specimens is linearly dose-dependent and the strain rates of nanocrystalline metals are significantly greater as compared to that of the coarse grained metals. Real-time microscopic observation suggests that substantial grain boundary migration and grain rotation are responsible for the significant in-plane strain.
Collapse
Affiliation(s)
- K Y Yu
- State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum-Beijing , Beijing 102249, China
| | - Y Chen
- Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843-3123, United States
- MPA-CINT, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
| | - J Li
- Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843-3123, United States
| | - Y Liu
- Department of Materials Science and Engineering, Texas A&M University , College Station, Texas 77843-3123, United States
| | - H Wang
- School of Materials Engineering, Purdue University , West Lafayette, Indiana 47907 United States
- Department of Electrical Engineering, Purdue University , West Lafayette, Indiana 47907 United States
| | - M A Kirk
- Nuclear Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - M Li
- Nuclear Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - X Zhang
- School of Materials Engineering, Purdue University , West Lafayette, Indiana 47907 United States
| |
Collapse
|
6
|
Li J, Yu KY, Chen Y, Song M, Wang H, Kirk MA, Li M, Zhang X. In situ study of defect migration kinetics and self-healing of twin boundaries in heavy ion irradiated nanotwinned metals. NANO LETTERS 2015; 15:2922-2927. [PMID: 25768722 DOI: 10.1021/nl504677z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
High energy particles introduce severe radiation damage in metallic materials, such as Ag. Here we report on the study on twin boundary (TB) affected zone in irradiated nanotwinned Ag wherein time accumulative defect density and defect diffusivity are substantially different from those in twin interior. In situ studies also reveal surprising resilience and self-healing of TBs in response to radiation. This study provides further support for the design of radiation-tolerant nanotwinned metallic materials.
Collapse
Affiliation(s)
| | - K Y Yu
- ‡Department of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing 102249, China
| | | | | | | | - M A Kirk
- ⊥Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - M Li
- ⊥Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | | |
Collapse
|
7
|
Chen Y, Yu KY, Liu Y, Shao S, Wang H, Kirk MA, Wang J, Zhang X. Damage-tolerant nanotwinned metals with nanovoids under radiation environments. Nat Commun 2015; 6:7036. [PMID: 25906997 PMCID: PMC4421808 DOI: 10.1038/ncomms8036] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 03/24/2015] [Indexed: 11/11/2022] Open
Abstract
Material performance in extreme radiation environments is central to the design of future nuclear reactors. Radiation induces significant damage in the form of dislocation loops and voids in irradiated materials, and continuous radiation often leads to void growth and subsequent void swelling in metals with low stacking fault energy. Here we show that by using in situ heavy ion irradiation in a transmission electron microscope, pre-introduced nanovoids in nanotwinned Cu efficiently absorb radiation-induced defects accompanied by gradual elimination of nanovoids, enhancing radiation tolerance of Cu. In situ studies and atomistic simulations reveal that such remarkable self-healing capability stems from high density of coherent and incoherent twin boundaries that rapidly capture and transport point defects and dislocation loops to nanovoids, which act as storage bins for interstitial loops. This study describes a counterintuitive yet significant concept: deliberate introduction of nanovoids in conjunction with nanotwins enables unprecedented damage tolerance in metallic materials.
Collapse
Affiliation(s)
- Y. Chen
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
| | - K Y. Yu
- Department of Materials Science and Engineering, China University of Petroleum-Beijing, Beijing 102246, China
| | - Y. Liu
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
| | - S. Shao
- MST-8, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - H. Wang
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
- Department of Electrical and Computer Engineering, Texas A&M University, College Station, Texas 77843, USA
| | - M. A. Kirk
- Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J. Wang
- MST-8, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
| | - X. Zhang
- Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77843, USA
- Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843-3123, USA
| |
Collapse
|