Materials aging at the mesoscale: Kinetics of thermal, stress, radiation activations

Short, Michael P.; Yip, Sidney

doi:10.1016/j.cossms.2014.12.005

Cited by 18 publications

(5 citation statements)

References 49 publications

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“…Since it is not the purpose of this paper to discuss the origin and evolution of swelling with respect to irradiation, a Gaussian type swelling profile has been assumed. A Gaussian is a reasonable approximation to swelling profiles observed in some ion irradiation experiments [3,7,11,45] where swelling was suppressed from injected ions at the back of the ion range and from free-surface effects at the front of the range.…”

Section: Resultsmentioning

confidence: 75%

Modification of SRIM-calculated dose and injected ion profiles due to sputtering, injected ion buildup and void swelling

Wang

Toloczko

Bailey

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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In radiation effects on materials utilizing self-ion irradiations, it is necessary to calculate the local displacement damage level and ion injection profile because of the short distance that self-ions travel in a material and because of the strong variation of displacement rate with depth in a specimen. The most frequently used tool for this is the software package called Stopping and Range of Ions in Matter (SRIM). A SRIM-calculated depth-dependent dose level is usually determined under the implicit assumption that the target does not undergo any significant changes in volume during the process, in particular SRIM ignores the effect of sputtering, injected ions, and void swelling on the redistribution of the dose and injected ion profiles. This approach become increasingly invalid as the ion fluence reaches ever higher levels, especially for low energy ion irradiations. The original surface is not maintained due to sputterinduced erosion, while within the irradiated region of the specimen, injected ions are adding material, and if void swelling is occurring, it is creating empty space. An iterative mathematical treatment of SRIM outputs to produce corrected dose and injected ion profiles based on these phenomenon and without regard to diffusion is presented along with examples of differences between SRIM-calculated values and corrected values over a range of typical ion energies. The intent is to provide the reader with a convenient tool for more accurately calculating dose and injected ion profiles for heavy-ion irradiations.

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Section: Resultsmentioning

confidence: 75%

Modification of SRIM-calculated dose and injected ion profiles due to sputtering, injected ion buildup and void swelling

Wang

Toloczko

Bailey

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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“…This leads to the emergence of numerous mesoscale phenomena, offering ample opportunities for exploration and discovery. [ 87 ] Moreover, given that the formation of HoMS through STA has been established as the manifestation of concentration waves, it is important to note that the properties of building blocks, including their electronic structure, crystal structure, and morphology, are significantly influenced by the guiding concentration waves. [ 88 ] As a consequence, the multi‐objective variations in the formation of HoMS give rise to nontrivial properties in building blocks.…”

Section: Mesoscience In the Structure Of Homsmentioning

confidence: 99%

Mesoscience in Hollow Multi‐Shelled Structures

Wei,

Zhao,

Wang

2023

Advanced Science

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The prevalence of mesoscale complexity in materials science underscores the significance of the compromise in competition principle, which gives rise to the emergence of mesoscience. This principle offers valuable insights into understanding the formation process, characteristics, and performance of complex material systems, ultimately guiding the future design of such intricate materials. Hollow multi‐shelled structures (HoMS) represent a groundbreaking multifunctional structural system that encompasses several spatial regimes. A plethora of mesoscale cases within HoMS present remarkable opportunities for exploring, understanding, and utilizing mesoscience, varying from the formation process of HoMS, to the mesoscale structural parameters, and finally the distinctive mass/energy transfer behaviors exhibited by HoMS. The compromise in competition between the diffusion and reaction contributes to the successful formation of multi‐shells of HoMS, allowing for precise regulation of the structural parameters by dynamically varying the interplay between two dominances. Moreover, the distinct roles played by the shells and cavities within HoMS significantly influence the energy/mass transfer processes with the unique temporal‐spatial resolution, providing guidance for customizing the application performance. Hopefully, the empirical and theoretical anatomy of HoMS following mesoscience would fuel new discoveries within this promising and complex multifunctional material system.

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“…Radiation damage effects such as voids have been proposed as self-organizing into superlattices, 57 and have more recently been identified as hallmarks of mesoscale science 58 due to their potential self-organizing qualities. 59 Polycrystalline, anisotropic materials in particular may be studied to pinpoint the onset of anisotropic void swelling. While void swelling is an isotropic phenomenon, the resultant irradiation creep that relaxes stresses induced by void swelling will follow the anisotropy of the material, and its microstructure.…”

Section: Using Tg Spectroscopy In Situ To Identify Mechanisms Of Radimentioning

confidence: 99%

Applications of Transient Grating Spectroscopy to Radiation Materials Science

Short

Dennett

Ferry

et al. 2015

JOM

Self Cite

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The ability to study radiation damage in situ will directly enable the rapid innovation and qualification of materials for nuclear applications by allowing direct observation of the effects of radiation damage accumulation. This is a challenging task, as the measurement technique must be noncontact, nondestructive, rapid, and still allow for online irradiation without interference. Applicable methods of mechanical spectroscopy are surveyed, noting their potential usefulness for characterizing radiation-induced microstructural changes in situ. The transient grating (TG) spectroscopy technique appears most suited for these studies, due to its noncontact, nondestructive nature, its ability to rapidly probe materials to the depth of ion irradiation, and the large number of deconvolvable components extractable from its signal. Work is proposed to separate the individual mechanisms of irradiation damage using in situ and ex situ TG spectroscopy, through a suite of single-effect and integrated experiments.

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Materials aging at the mesoscale: Kinetics of thermal, stress, radiation activations

Cited by 18 publications

References 49 publications

Modification of SRIM-calculated dose and injected ion profiles due to sputtering, injected ion buildup and void swelling

Modification of SRIM-calculated dose and injected ion profiles due to sputtering, injected ion buildup and void swelling

Mesoscience in Hollow Multi‐Shelled Structures

Applications of Transient Grating Spectroscopy to Radiation Materials Science

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