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Title: Effect of sink strength on coherency loss of precipitates in dilute Cu-base alloys during in situ ion irradiation

Journal Article · · Acta Materialia
 [1];  [2];  [3];  [4];  [4];  [5];  [6]
  1. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Div.
  2. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Nuclear Science and Engineering Div.
  4. Argonne National Lab. (ANL), Argonne, IL (United States). Experimental Operations and Facilities Div.
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Div.; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering
  6. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Div.; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering

In situ irradiations with 1 MeV Kr ions at 50~613 K up to a fluence of 6.25 × 1014 ions/cm2 (~1.25 displacements per atom, dpa) have been performed on pre-aged dilute Cu-0.9%Co, Cu-0.9%Fe and Cu-0.8%Cr alloys containing uniform matrix dispersions of coherent precipitates in order to study the effects of initial precipitate sink strength, damage dose and irradiation temperature on radiation-induced coherency loss of precipitates. Coherent precipitates with different point defect sink strengths (2πNd, where N and d are the precipitate density and diameter) were used in this work to examine potential differences in atomic relaxation during absorption of point defects. In all cases, irradiation to low doses (<~1 dpa) was very effective at inducing loss of precipitate coherency. At low sink strengths (~1013 m-2), loss of precipitate coherency could be induced for doses ~0.01 dpa. This suggests there might be an efficient preferential medium-range strain-induced bias for absorption of interstitial defects due to tensile strains emanating from the undersized precipitates, which induces relatively rapid loss of coherency at low precipitate sink strengths. High precipitate sink strength (~1014 m-2) conditions were relatively resistant to the radiation-induced loss of coherency (requiring higher doses approaching ~1 dpa) and this might be due to nearly equal numbers of interstitial and vacancy defects arriving at the precipitate interface for such high sink strength conditions. The precipitate coherency loss was observed to have a weak dependence on irradiation temperature. Molecular dynamics simulations confirm a strong effect of precipitate sink strength on the probability of interstitial absorption at precipitates.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-00OR22725; SC0006661; AC07-051D14517
OSTI ID:
1779127
Alternate ID(s):
OSTI ID: 1782881
Journal Information:
Acta Materialia, Vol. 210; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (69)

Microstructural evolution of Alloy 718 at high helium and hydrogen generation rates during irradiation with 600–800 MeV protons journal December 2000
Microstructural analysis of ion-irradiation-induced hardening in inconel 718 journal May 2003
Phase transformation of cobalt induced by ball milling journal January 1995
Crystallography and morphology of nanosized Cr particles in a Cu–0.2% Cr alloy journal March 2000
Loss of Precipitate Coherency by Electron Irradiation in the High Voltage Electron Microscope journal November 1968
Analysis of displacement damage and defect production under cascade damage conditions journal February 1993
Recent Developments in Irradiation-Resistant Steels journal August 2008
The Cr-Cu (Chromium-Copper) system journal February 1984
Development of Al added high-Cr ODS steels for fuel cladding of next generation nuclear systems journal October 2011
Corrosion properties of oxide dispersion strengthened steels in super-critical water environment journal August 2004
Effects of proton irradiation on nanocluster precipitation in ferritic steel containing fcc alloying additions journal April 2012
Fine particle strengthening in Cu-0.35 wt% Cr journal October 1974
Microstructure of copper following high dose 14-MeV Cu ion irradiation journal March 1986
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Atomic scale investigation of Cr precipitation in copper journal June 2012
Precipitation hardening in metals journal January 1999
Enhanced Radiation-tolerant Oxide Dispersion Strengthened Steel and its Microstructure Evolution under Helium-implantation and Heavy-ion Irradiation journal January 2017
Amorphization of oxides in ODS materials under low and high energy ion irradiations journal October 2011
Dynamic self-organization in Cu alloys under ion irradiation journal July 2010
Materials needs for fusion, Generation IV fission reactors and spallation neutron sources – similarities and differences journal August 2004
Tensile yield behavior and precipitation strengthening mechanism in Super304H steel journal April 2014
Interfaces under ion irradiation: growth and taming of nanostructures journal June 2003
Loss in coherency and coarsening behavior of Al3Sc precipitates journal February 2004
The diffusion and solubility of copper in iron journal May 1977
Phase stability under irradiation journal January 1984
Diffraction contrast from spherically symmetrical coherency strains journal July 1963
TEM and PAS study of neutron irradiated VVER-type RPV steels journal May 2002
A new method for fast statistical measurement of interfacial misfit strain around nano-scale semi-coherent particles journal January 2017
Unified theoretical analysis of experimental swelling data for irradiated austenitic and ferritic/martensitic alloys journal April 1990
Radiation stability of nanoclusters in nano-structured oxide dispersion strengthened (ODS) steels journal March 2013
Flux effects in precipitation under irradiation – Simulation of Fe-Cr alloys journal February 2019
Development of next generation tempered and ODS reduced activation ferritic/martensitic steels for fusion energy applications journal June 2017
Characterisation of critical nucleus/matrix interface: application to Cu–Co alloys and microalloyed austenite journal January 1989
Inverse Kirkendall mixing in collision cascades journal January 1999
A comparison of the structure of solute clusters formed during thermal ageing and irradiation journal May 2011
Ballistic effects on the copper precipitation and re-dissolution kinetics in an ion irradiated and thermally annealed Fe–Cu alloy journal September 2016
Nanoscale analysis of ion irradiated ODS 14YWT ferritic alloy journal January 2020
Creep constitutive equation of dual phase 9Cr-ODS steel journal February 2008
Precipitates in zircaloy: Identification and the effects of irradiation and thermal treatment journal April 1986
Effect of coherency on coarsening of second-phase precipitates in Cu-base alloys journal June 2008
Embedded-atom-method functions for the fcc metals Cu, Ag, Au, Ni, Pd, Pt, and their alloys journal June 1986
Sink strengths for thin film surfaces and grain boundaries journal May 1980
Helium effects on creep properties of Fe–14CrWTi ODS steel at 650 °C journal October 2014
The stability of precipitates in an irradiation environment journal September 1972
Automated identification and indexing of dislocations in crystal interfaces journal October 2012
Atom probe characterization of nano-scaled features in irradiated ODS Eurofer steel journal February 2011
Particle stability with recoil resolution journal May 1982
Ultrastrong steel via minimal lattice misfit and high-density nanoprecipitation journal April 2017
The effect of precipitate-matrix interface sinks on the growth of voids in the matrix journal January 1981
Systematic analysis of local atomic structure combined with 3D computer graphics journal March 1994
Nucleation and growth of γ-Fe precipitate in Cu-2%Fe alloy aged under high magnetic field journal March 2016
Allotropic phase transformations in HCP, FCC and BCC metastable structures in Co-nanoparticles journal May 2001
Tensile properties of Inconel 718 after low temperature neutron irradiation journal May 2003
Stacking fault and partial dislocation dominated strengthening mechanisms in highly textured Cu/Co multilayers journal October 2013
Detection of point defects upon ion irradiation by means of precipitate coherency journal May 2007
The Co−Cu (Cobalt-Copper) system journal April 1984
Synchrotron radiation investigations of microstructural evolutions of ODS steels and Zr-based alloys irradiated in nuclear reactors journal April 2015
I. Energy calculations for pure metals journal January 1987
Dissolution of nitride precipitates in iron by low-dose neutron irradiation journal February 1987
Temperature dependent dispersoid stability in ion-irradiated ferritic-martensitic dual-phase oxide-dispersion-strengthened alloy: Coherent interfaces vs. incoherent interfaces journal September 2016
Characterization of High Temperature Creep Properties in Recrystallized 12Cr-ODS Ferritic Steel Claddings journal August 2002
A dispersion strengthening model based on differing elastic moduli applied to the iron-copper system journal July 1972
Embedded-atom-method interatomic potentials for hcp metals journal June 1992
Opportunities and limitations for ion beams in radiation effects studies: Bridging critical gaps between charged particle and neutron irradiations journal January 2018
Designing Radiation Resistance in Materials for Fusion Energy journal July 2014
Stability of MX-type strengthening nanoprecipitates in ferritic steels under thermal aging, stress and ion irradiation journal June 2014
High-resolution electron microscopy observation and dislocation reaction mechanism of fivefold twinning in a Cu-rich precipitate in a cold rolled ferritic steel containing copper journal September 2014
Development of novel Cu-Cr-Nb-Zr alloys with the aid of computational thermodynamics journal October 2018
Phase stability under irradiation: Ballistic effects journal August 1984