Title: The dynamic evolution of swelling in nickel concentrated solid solution alloys through in situ property monitoring

Abstract

Defects and microstructural features spanning the atomic level to the microscale play deterministic roles in the expressed properties of materials. Yet studies of material evolution in response to environmental stimuli most often correlate resulting performance with one dominant microstructural feature only. In this work, the dynamic evolution of swelling in a series of Ni-based concentrated solid solution alloys under high-temperature irradiation exposure is observed using continuous, in situ measurements of thermoelastic properties in bulk specimens. Unlike traditional evaluation techniques which account only for volumetric porosity identified using electron microscopy, direct property evaluation provides an integrated response across all defect length scales. In particular, the evolution in elastic properties during swelling is found to depend significantly on the entire size spectrum of defects, from the nano- to meso-scales, some of which are not resolvable in imaging. Observed changes in thermal transport properties depend sensitively on the partitioning of electronic and lattice thermal conductivity. This emerging class of in situ experiments, which directly measure integrated performance in relevant conditions, provides unique insight into material dynamics otherwise unavailable using traditional methods.

Authors:

Dennett, Cody A.  ^[1];

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Dacus, Benjamin R. ^[2]; Barr, Christopher M. ^[3]; Clark, Trevor ^[3]; Bei, Hongbin ^[4]; Zhang, Yanwen ^[4]; Short, Michael P. ^[5]; Hattar, Khalid ^[3]

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+ Show Author Affiliations

1. Idaho National Lab. (INL), Idaho Falls, ID (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Idaho National Lab. (INL), Idaho Falls, ID (United States)

Publication Date:

Sat Nov 06 00:00:00 EDT 2021

Research Org.:

Idaho National Laboratory (INL), Idaho Falls, ID (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies

Sponsoring Org.:

USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE); USNRC; USDOE Laboratory Directed Research and Development (LDRD) Program

OSTI Identifier:

1888556

Alternate Identifier(s):

OSTI ID: 1867927; OSTI ID: 1872863

Report Number(s):

SAND2021-11711J
Journal ID: ISSN 2352-9407; 699475

Grant/Contract Number:  

NA0003525; AC07-05ID14517; NA0002135; NRC-HQ-84-15-G-0045; AC05-00OR22725; NA-0003525

Resource Type:

Accepted Manuscript

Journal Name:

Applied Materials Today

Additional Journal Information:

Journal Volume: 25; Journal ID: ISSN 2352-9407

Publisher:

Elsevier

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; concentrated solid solution alloys; in situ dynamics; ion irradiation; swelling; thermophysical properties