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Title: Microstructural evolution and transmutation in tungsten under ion and neutron irradiation

Journal Article · · Materialia
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4];  [5];  [6]; ORCiD logo [7];  [4];  [3]; ORCiD logo [3]; ORCiD logo [3]
  1. Univ. of Oxford (United Kingdom); UK Atomic Energy Authority (UKAEA), Culham (United Kingdom); Univ. of Birmingham (United Kingdom)
  2. Univ. of Oxford (United Kingdom); UK Atomic Energy Authority (UKAEA), Culham (United Kingdom)
  3. Univ. of Oxford (United Kingdom)
  4. UK Atomic Energy Authority (UKAEA), Culham (United Kingdom); Univ. of Oxford (United Kingdom)
  5. Clemson Univ., SC (United States)
  6. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Univ. of Tennessee, Knoxville, TN (United States)
  7. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

This study aims to compare the effects of neutron and self-ion irradiation on the mechanical properties and microstructural evolution in W. Neutron irradiation at the HFR reactor to 1.67 dpa at 800 °C resulted in the formation of large Re and Os rich clusters and voids. The post-irradiation composition was measured using APT and verfified against FISPACT modelling. The measured Re and Os concentration was used to create alloys with equivalent concentrations of Re and Os. These alloys were exposed to self-ion irradiation to a peak dose of 1.7 dpa at 800 °C. APT showed that self-ion irradiation leads to the formation of small Os clusters, wheras under neutron irradiation large Re/Os clusters form. Voids are formed by both ion and neutron irradiation, but the voids formed by neutron irradiation are larger. By comparing the behaviour of W-1.4Re and W-1.4Re-0.1Os, suppression of Re cluster formation was observed. Irradiation hardening was measured using nanoindentation and was found to be 2.7 GPa, after neutron irradiation and 1.6 GPa and 0.6 GPa for the self-ion irradiated W-1.4Re and W-1.4Re-0.1Os. The higher hardening is attributed to the barrier strength of large voids and Re/Os clusters that are observed after neutron irradiation.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC05-76RL01830; NA0003525
OSTI ID:
2405116
Report Number(s):
PNNL-SA--195039
Journal Information:
Materialia, Journal Name: Materialia Vol. 33; ISSN 2589-1529
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (68)

EELS log-ratio technique for specimen-thickness measurement in the TEM journal February 1988
Quantifying the mechanical effects of He, W and He + W ion irradiation on tungsten with spherical nanoindentation journal December 2017
Yielding and fracture in tungsten and tungsten-rhenium alloys journal February 1969
A review of chromium, molybdenum, and tungsten alloys journal October 1975
Swelling in neutron irradiated tungsten and tungsten-25 percent rhenium journal July 1974
Operating temperature windows for fusion reactor structural materials journal November 2000
Ion-irradiation-induced clustering in W–Re and W–Re–Os alloys: A comparative study using atom probe tomography and nanoindentation measurements journal April 2015
High temperature annealing of ion irradiated tungsten journal May 2015
Ion-irradiation induced clustering in W-Re-Ta, W-Re and W-Ta alloys: An atom probe tomography and nanoindentation study journal February 2017
Transmutation-induced precipitation in tungsten irradiated with a mixed energy neutron spectrum journal February 2019
Trends in vacancy distribution and hardness of high temperature neutron irradiated single crystal tungsten journal October 2020
The effect of rhenium on the diffusion of small interstitial clusters in tungsten journal May 2020
TEM observation of bubbles induced by single and sequential He/H irradiation in tungsten journal December 2017
Tensile and impact properties of tungsten-rhenium alloy for plasma-facing components in fusion reactor journal November 2019
Defect evolution of neutron irradiated ITER grade tungsten after annealing journal April 2023
Microstructure and hardening induced by neutron irradiation in single crystal, ITER specification and cold rolled tungsten journal August 2021
Hardening mechanisms of “cold” rolled tungsten after neutron irradiation: Indentation and finite elements modelling journal February 2023
He-enhanced heterogeneity of radiation-induced segregation in FeNiCoCr high-entropy alloy journal February 2022
Temperature-dependent synergistic evolution mechanism of rhenium and irradiation defects in tungsten-rhenium alloys journal May 2023
Helium bubble distributions in a nanostructured ferritic alloy journal March 2013
Migration of rhenium and osmium interstitials in tungsten journal December 2015
Neutron irradiation effects on the microstructural development of tungsten and tungsten alloys journal April 2016
Irradiation hardening of pure tungsten exposed to neutron irradiation journal November 2016
Effect of neutron irradiation on rhenium cluster formation in tungsten and tungsten-rhenium alloys journal August 2018
Intermetallic Re phases formed in ion irradiated WRe alloy journal February 2019
Mechanical properties of single-crystal tungsten irradiated in a mixed spectrum fission reactor journal May 2019
Response of unalloyed tungsten to mixed spectrum neutrons journal July 2019
Effects of neutron irradiation on the brittle to ductile transition in single crystal tungsten journal December 2019
Thermal diffusivity of irradiated tungsten and tungsten-rhenium alloys journal January 2021
Fracture-mechanical properties of neutron irradiated ITER specification tungsten journal April 2021
Neutron irradiation tolerance of potassium-doped and rhenium-alloyed tungsten journal September 2021
The influence of rhenium addition on the distribution of vacancy-type defects in tungsten journal September 2021
Effect of irradiation temperature on the fracture-mechanical behaviour of tungsten irradiated to 1 dpa journal December 2021
Recent progress in experimental investigation of neutron irradiation response of tungsten journal September 2022
Microstructural analysis of W irradiated at different temperatures journal December 2022
Interaction of transmutation products with precipitates, dislocations and grain boundaries in neutron irradiated W journal May 2022
On the use of SRIM for calculating vacancy production: Quick calculation and full-cascade options journal September 2021
Effect of self-ion irradiation on hardening and microstructure of tungsten journal December 2016
Effect of neutron irradiation on the microstructure of tungsten journal December 2016
Opportunities and limitations for ion beams in radiation effects studies: Bridging critical gaps between charged particle and neutron irradiations journal January 2018
Dose rate dependence of Cr precipitation in an ion-irradiated Fe 18Cr alloy journal March 2018
Decoration of voids with rhenium and osmium transmutation products in neutron irradiated single crystal tungsten journal December 2019
On the use of ion beams to emulate the neutron irradiation behaviour of tungsten journal February 2019
Focused Ion Beam Milling for Site Specific Scanning and Transmission Electron Microscopy Specimen Preparation journal August 1997
Investigating Effects of Alloy Chemical Complexity on Helium Bubble Formation by Accurate Segregation Measurements Using Atom Probe Tomography journal August 2019
The Nanostructure of the Oxide Formed on Fe–10Cr–4Al Exposed in Liquid Pb journal August 2022
New insights into microstructure of neutron-irradiated tungsten journal April 2021
Suppression of radiation-induced point defects by rhenium and osmium interstitials in tungsten journal November 2016
Strain-rate dependence of the brittle-to-ductile transition temperature in tungsten journal June 2007
Effect of temperature on the neutron irradiation-induced cavities in tungsten journal May 2022
PHENIX U.S.-Japan Collaboration Investigation of Thermal and Mechanical Properties of Thermal Neutron–Shielded Irradiated Tungsten journal May 2019
A generalized Ising model for studying alloy evolution under irradiation and its use in kinetic Monte Carlo simulations journal August 2016
Stability and mobility of rhenium and osmium in tungsten: first principles study journal September 2014
Towards model-driven reconstruction in atom probe tomography journal September 2020
Automated calibration of model-driven reconstructions in atom probe tomography journal July 2022
A first-principles model for anomalous segregation in dilute ternary tungsten-rhenium-vacancy alloys journal March 2017
Development of a solute and defect concentration dependant Ising model for the study of transmutation induced segregation in neutron irradiated W–(Re, Os) systems journal September 2021
Neutron irradiation effects in different tungsten microstructures journal October 2021
Recent advances in modeling and simulation of the exposure and response of tungsten to fusion energy conditions journal June 2017
An atom probe tomography and inventory calculation examination of second phase precipitates in neutron irradiated single crystal tungsten journal September 2020
Recent progress in the assessment of irradiation effects for in-vessel fusion materials: tungsten and copper alloys journal January 2022
Self-interstitial atom defects in bcc transition metals: Group-specific trends journal January 2006
Mechanism of nucleation and incipient growth of Re clusters in irradiated W-Re alloys from kinetic Monte Carlo simulations journal September 2017
A pyramid approach to subpixel registration based on intensity journal January 1998
Radiation-induced segregation in W-Re: from kinetic Monte Carlo simulations to atom probe tomography experiments journal October 2019
The Preparation and some Properties of Tungsten-Rhenium-Osmium Alloys journal September 1967
An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments journal June 1992
The Effect of Rhenium Content on Microstructural Changes and Irradiated Hardening in W-Re Alloy under High-Dose Ion Irradiation journal January 2023