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Title: Dissipation of radiation energy in concentrated solid-solution alloys: Unique defect properties and microstructural evolution

Abstract

The effort to develop metallic alloys with increased structural strength and improved radiation performance has focused on the incorporation of either solute elements or microstructural inhomogeneities to mitigate damage. The recent discovery and development of single-phase concentrated solid-solution alloys (SP-CSAs) has prompted fundamental questions that challenge established theories and models currently applicable to conventional alloys. Here, the current understanding of electronic and atomic effects, defect evolution, and microstructure progression suggests that radiation energy dissipates in SP-CSAs at different interaction strengths via energy carriers (electrons, phonons, and magnons). Modification of electronic- and atomic-level heterogeneities and tailoring of atomic transport processes can be realized through tuning of the chemical complexity of SP-CSAs by the selection of appropriate elements and their concentrations. Fundamental understanding of controlling energy dissipation via site-to-site chemical complexity reveals new design principles for predictive discovery and guided synthesis of new alloys with targeted functionalities, including radiation tolerance.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [2]
+ Show Author Affiliations
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  2. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1606905
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
MRS Bulletin
Additional Journal Information:
Journal Volume: 44; Journal Issue: 10; Journal ID: ISSN 0883-7694
Publisher:
Materials Research Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhang, Yanwen, Egami, Takeshi, and Weber, William J. Dissipation of radiation energy in concentrated solid-solution alloys: Unique defect properties and microstructural evolution. United States: N. p., 2019. Web. doi:10.1557/mrs.2019.233.
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Zhang, Yanwen, Egami, Takeshi, & Weber, William J. Dissipation of radiation energy in concentrated solid-solution alloys: Unique defect properties and microstructural evolution. United States. https://doi.org/10.1557/mrs.2019.233
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Zhang, Yanwen, Egami, Takeshi, and Weber, William J. Thu . "Dissipation of radiation energy in concentrated solid-solution alloys: Unique defect properties and microstructural evolution". United States. https://doi.org/10.1557/mrs.2019.233. https://www.osti.gov/servlets/purl/1606905.
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@article{osti_1606905,
title = {Dissipation of radiation energy in concentrated solid-solution alloys: Unique defect properties and microstructural evolution},
author = {Zhang, Yanwen and Egami, Takeshi and Weber, William J.},
abstractNote = {The effort to develop metallic alloys with increased structural strength and improved radiation performance has focused on the incorporation of either solute elements or microstructural inhomogeneities to mitigate damage. The recent discovery and development of single-phase concentrated solid-solution alloys (SP-CSAs) has prompted fundamental questions that challenge established theories and models currently applicable to conventional alloys. Here, the current understanding of electronic and atomic effects, defect evolution, and microstructure progression suggests that radiation energy dissipates in SP-CSAs at different interaction strengths via energy carriers (electrons, phonons, and magnons). Modification of electronic- and atomic-level heterogeneities and tailoring of atomic transport processes can be realized through tuning of the chemical complexity of SP-CSAs by the selection of appropriate elements and their concentrations. Fundamental understanding of controlling energy dissipation via site-to-site chemical complexity reveals new design principles for predictive discovery and guided synthesis of new alloys with targeted functionalities, including radiation tolerance.},
doi = {10.1557/mrs.2019.233},
journal = {MRS Bulletin},
number = 10,
volume = 44,
place = {United States},
year = {Thu Oct 10 00:00:00 EDT 2019},
month = {Thu Oct 10 00:00:00 EDT 2019}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1557/mrs.2019.233
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Citation Metrics:
Cited by: 32 works
Citation information provided by
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Figures / Tables:

Figure 1 Figure 1: Single-phase concentrated solid-solution alloys (SP-CSAs) are alloys with tailored chemical complexity tunable via the intrinsic elemental disorder. The chemical complexity may be tuned by increasing the number of multiple principal elements (from 1 to 5, shown from the lower left to the upper right corner in the backgroundmore » arrow), by replacing the principal elements (e.g., in the ternaries of NiCrCo and NiFeCo by replacing Cr with Fe), and by modifying the concentration in the alloys (e.g., from Ni0.5Fe0.5 to Ni0.3Fe0.7 or Ni0.9Fe0.1, or varying concentration of all elements of 20±5% in quinternaries of NiCoFeCrMn and NiCoFeCrPd). The tunable chemical complexity (e.g., left: a subset of SP-CSAs) represents a powerful tool for dramatically modifying properties at the level of electrons and atoms (middle: electronic structure and energy landscapes in pure nickel and CSAs) and ultimately enhancing radiation tolerance (right: schematic drawing of an atomic collision and the radiation-induced swelling from step-height measurements).« less
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