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Title: Detwinning through migration of twin boundaries in nanotwinned Cu films under in situ ion irradiation

Journal Article · · Science and Technology of Advanced Materials
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [4]
  1. Peking Univ., Beijing (People's Republic of China)
  2. China Univ. of Petroleum, Beijing (People's Republic of China)
  3. Xi’an Jiaotong Univ. Xi’an (People's Republic of China)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)

The mechanism of radiation-induced detwinning is different from that of deformation detwinning as the former is dominated by supersaturated radiation-induced defects while the latter is usually triggered by global stress. In situ Kr ion irradiation was performed to study the detwinning mechanism of nanotwinned Cu films with various twin thicknesses. Two types of incoherent twin boundaries (ITBs), so-called fixed ITBs and free ITBs, are characterized based on their structural features, and the difference in their migration behavior is investigated. It is observed that detwinning during radiation is attributed to the frequent migration of free ITBs, while the migration of fixed ITBs is absent. Statistics shows that the migration distance of free ITBs is thickness and dose dependent. Here, potential migration mechanisms are discussed.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Ministry of Science and Technology of the People's Republic of China; National Natural Science Foundation of China (NSFC); China University of Petroleum; USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1483413
Journal Information:
Science and Technology of Advanced Materials, Vol. 19, Issue 1; ISSN 1468-6996
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

References (34)

Grain Boundary Strengthening in Alumina by Rare Earth Impurities journal January 2006
Molecular dynamics studies of the interaction of a /6 ⟨112⟩ Shockley dislocations with stacking fault tetrahedra in copper. Part I: Intersection of SFT by an isolated Shockley journal March 2009
Strengthening Materials by Engineering Coherent Internal Boundaries at the Nanoscale journal April 2009
Influence of slip transmission on the migration of incoherent twin boundaries in epitaxial nanotwinned Cu journal January 2011
Damage-tolerant nanotwinned metals with nanovoids under radiation environments journal April 2015
Plasticity and ultra-low stress induced twin boundary migration in nanotwinned Cu by in situ nanoindentation studies journal June 2014
Shear response of Σ 3 { 112 } twin boundaries in face-centered-cubic metals journal February 2011
Epitaxial nanotwinned Cu films with high strength and high conductivity journal August 2008
Dislocation structures of Σ3 {112} twin boundaries in face centered cubic metals journal July 2009
Radiation damage in helium ion irradiated nanocrystalline Fe journal June 2012
Radiation hardening in neutron-irradiated polycrystalline copper: Barrier strength of defect clusters journal March 1991
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 induced detwinning in nanotwinned Cu journal March 2017
Revealing the Maximum Strength in Nanotwinned Copper journal January 2009
What determines the interfacial configuration of Nb/Al2O3 and Nb/MgO interface journal October 2016
Plastic flow stability of nanotwinned Cu foils journal June 2010
Removal of stacking-fault tetrahedra by twin boundaries in nanotwinned metals journal January 2013
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
De-twinning via secondary twinning in face-centered cubic alloys journal August 2013
Movement of interstitial clusters in stress gradients of grain boundaries journal December 2003
Twinning dislocation multiplication at a coherent twin boundary journal September 2011
Comparison of interface structure of BCC metallic (Fe, V and Nb) films on MgO (100) substrate journal July 2017
In situ studies of irradiation-induced twin boundary migration in nanotwinned Ag journal September 2013
In situ studies on radiation tolerance of nanotwinned Cu journal June 2016
In situ nanoindentation study on plasticity and work hardening in aluminium with incoherent twin boundaries journal September 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
Nucleation and thickening of shear bands in nano-scale twin/matrix lamellae of a Cu–Al alloy processed by dynamic plastic deformation journal May 2010
Temperature and dose dependencies of microstructure and hardness of neutron irradiated OFHC copper journal August 1995
Detwinning mechanisms for growth twins in face-centered cubic metals journal April 2010
Significant enhancement of the strength-to-resistivity ratio by nanotwins in epitaxial Cu films journal July 2009

Cited By (1)



Figures / Tables (7)