skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: In situ study on radiation response of a nanotwinned steel

Journal Article · · Scripta Materialia
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [1];  [1]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Argonne National Laboratory (ANL), Argonne, IL (United States)

Recent radiation studies on nanotwinned pure metals suggest that twin boundaries are appealing defect sinks, as they can transport and eliminate radiation-generated defects. However, radiation response of twin boundaries in nanotwinned steels is less well understood. Here, we investigate the microstructural evolution of a nanotwinned steel using in situ Kr++ irradiation to 4 dpa at ambient temperature. In this study, the in situ results show that nanoscale deformation twins in steels can effectively suppress the formation of ordered dislocation loop rafts. Furthermore, the formation of dislocation loop rafts and Frank loops depends prominently on twin spacing. The underlying mechanisms of the enhanced radiation resistance are discussed. The present study makes a positive step forward for the potential application of nanotwinned structural steels to nuclear reactors.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); US Department of the Navy, Office of Naval Research (ONR); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357; N00014-16-1-2778; 1728419; 20-4180
OSTI ID:
1902156
Journal Information:
Scripta Materialia, Vol. 220; ISSN 1359-6462
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (47)

Radiation damage in nanostructured materials journal July 2018
Effect of grain boundary character on sink efficiency journal October 2012
Strengthening Materials by Engineering Coherent Internal Boundaries at the Nanoscale journal April 2009
Damage-tolerant nanotwinned metals with nanovoids under radiation environments journal April 2015
Dislocation loops at twin boundaries in an ion-irradiated austenitic alloy journal October 1982
Alignment of dislocation loops in irradiated metals journal June 1974
Microstructural evolution of NF709 austenitic stainless steel under in-situ ion irradiations at room temperature, 300, 400, 500 and 600 °C journal October 2018
On the formation of stacking fault tetrahedra in irradiated austenitic stainless steels – A literature review journal November 2013
Epitaxial nanotwinned Cu films with high strength and high conductivity journal August 2008
Size effect on deformation twinning in face-centred cubic single crystals: Experiments and modelling journal May 2017
Grain size effect on radiation tolerance of nanocrystalline Mo journal October 2016
Ultrahigh Strength and High Electrical Conductivity in Copper journal April 2004
In Situ Studies on Twin-Thickness-Dependent Distribution of Defect Clusters in Heavy Ion-Irradiated Nanotwinned Ag journal January 2017
Radiation-resistant nanotwinned austenitic stainless steel journal January 2019
Spatial ordering of nano-dislocation loops in ion-irradiated materials journal December 2014
High strength, epitaxial nanotwinned Ag films journal January 2011
“Rafting” in neutron irradiated tungsten journal March 1973
Dislocation decoration and raft formation in irradiated materials journal August 2005
9R phase enabled superior radiation stability of nanotwinned Cu alloys via in situ radiation at elevated temperature journal April 2019
In situ Evidence of Defect Cluster Absorption by Grain Boundaries in Kr Ion Irradiated Nanocrystalline Ni journal February 2013
Ultrastrong nanocrystalline steel with exceptional thermal stability and radiation tolerance journal December 2018
Removal of stacking-fault tetrahedra by twin boundaries in nanotwinned metals journal January 2013
Helium irradiation induced ultra-high strength nanotwinned Cu with nanovoids journal September 2019
In Situ Study of Defect Migration Kinetics and Self-Healing of Twin Boundaries in Heavy Ion Irradiated Nanotwinned Metals journal April 2015
Defective twin boundaries in nanotwinned metals journal May 2013
Molecular dynamic studies of the interaction of a/6⟨112⟩ Shockley dislocations with stacking fault tetrahedra in copper. Part II: Intersection of stacking fault tetrahedra by moving twin boundaries journal March 2009
In Situ Studies on the Irradiation-Induced Twin Boundary-Defect Interactions in Cu journal August 2017
Recent Studies on the Microstructural Response of Nanotwinned Metals to In Situ Heavy Ion Irradiation journal November 2019
In situ study of defect accumulation in zirconium under heavy ion irradiation journal February 2013
Microstructure of neutron-irradiated iron before and after tensile deformation journal June 2006
Evolution of fine-scale defects in stainless steels neutron-irradiated at 275 °C journal April 2003
Self-ordered defect structures in two model F/M steels under in situ ion irradiation journal May 2014
In situ studies of irradiation-induced twin boundary migration in nanotwinned Ag journal September 2013
High temperature thermal and mechanical stability of high-strength nanotwinned Al alloys journal February 2019
Neutron irradiated molybdenum-relationship of microstructure to irradiation temperature journal January 1970
Twinning effects on strength and plasticity of metallic materials journal April 2016
Stability of nanoscale twins in copper under electric current stressing journal September 2010
In situ studies on radiation tolerance of nanotwinned Cu journal June 2016
Defect microstructures in neutron-irradiated copper and stainless steel journal July 1988
Radiation Damage in Austenitic Steels book January 2012
Designing Radiation Resistance in Materials for Fusion Energy journal July 2014
The influence of ∑3 twin boundaries on the formation of radiation-induced defect clusters in nanotwinned Cu journal June 2011
Thermal stability of sputtered Cu films with nanoscale growth twins journal May 2008
In-situ TEM studies of 150 keV W+ ion irradiated W and W-alloys: Damage production and microstructural evolution journal June 2016
Superior twin stability and radiation resistance of nanotwinned Ag solid solution alloy journal June 2018
Detailed transmission electron microscopy study on the mechanism of dislocation loop rafting in tungsten journal April 2018
In situ probing of the evolution of irradiation-induced defects in copper journal August 2013