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Identifying the microstructural features associated with void nucleation during elevated–temperature deformation of copper

Journal Article · · Fatigue and Fracture of Engineering Materials and Structures
DOI:https://doi.org/10.1111/ffe.13707· OSTI ID:1877126
 [1];  [2];  [2];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Rutgers Univ., Piscataway, NJ (United States)

The microstructural-scale mechanisms that produce cracks in metals during deformation at elevated temperatures are relevant to applications that involve thermal exposure. Prior studies of cavitation during high-temperature deformation, for example, creep, suffered from an inability to directly observe the microstructural evolution that occurs during deformation and leads to void nucleation. Here the current study takes advantage of modern high-speed electron backscatter diffraction (EBSD) detectors to observe cavitation in oxygen-free, high-conductivity copper in situ during deformation at 300°C. Most voids formed at the triple junction between a twin boundary and a high-angle grain boundary (HAGB). This finding does not contradict previous studies that suggested that twins are resistant to cracking—it reveals that cracks in HAGBs originate at twin/HAGB triple junctions and that cracks preferentially grow along HAGBs rather than the accompanying twins. Atomistic simulations explored the origins of this observation and suggest that twin/HAGB triple junctions are microstructural weak points.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
NA0003525
OSTI ID:
1877126
Alternate ID(s):
OSTI ID: 1996436
Report Number(s):
SAND2022-8382J; 707484
Journal Information:
Fatigue and Fracture of Engineering Materials and Structures, Journal Name: Fatigue and Fracture of Engineering Materials and Structures Journal Issue: 7 Vol. 45; ISSN 8756-758X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (67)

Cavity formation at grain boundary-subboundary intersections in pure ?-iron and an iron 0.14 wt % phosphorus alloy journal September 1977
Continuous creep cavity nucleation by stochastic grain-boundary sliding journal November 1990
The inter-relationship between grain boundary sliding and cavitation during creep of polycrystalline copper journal April 1996
Compatibility of deformation in two-phase Ti-Al alloys: Dependence on microstructure and orientation relationships journal July 1995
Creep-Rupture by Vacancy Condensation journal February 1956
The effectiveness of coincidence site lattice criteria in predicting creep cavitation resistance journal November 2011
Low-temperature creep in pure metals and alloys journal July 2015
The onset and evolution of fatigue-induced abnormal grain growth in nanocrystalline Ni–Fe journal October 2016
Grain Boundary Sliding and Slip Transmission in High Purity Aluminum journal May 2019
Influence of Grain Boundary Character on Creep Void Formation in Alloy 617 journal September 2009
Dynamic Abnormal Grain Growth in Molybdenum journal July 2013
Subgrains, Texture Evolution, and Dynamic Abnormal Grain Growth in a Mo Rod Material journal July 2019
Suppression of Void Nucleation in High-Purity Aluminum via Dynamic Recrystallization journal October 2019
Grain boundary cracking journal June 1998
Dynamic Abnormal Grain Growth in Refractory Metals journal August 2015
Grain boundary sliding and intercrystalline cracking journal February 1959
Intergranular fracture at elevated temperature journal June 1975
An investigation of the nucleation of creep cavities by 1 MV electron microscopy journal April 1975
Twin-slip interaction in f.c.c. crystals journal June 1977
Intergranular fracture in bicrystals journal February 1978
HVEM observations of grain boundary voids in high purity copper journal March 1981
Intergranular fracture in bicrystals—II journal February 1982
Cavity nucleation at high temperatures involving pile-ups of grain boundary dislocations journal July 1987
Continuous cavity nucleation and creep fracture journal January 1983
Cavity growth and grain boundary sliding in polycrystalline solids journal December 1986
Effect of substructure on intergranular cavitation at high temperature journal September 1994
Creep cavitation in metals journal October 2003
On the creep behaviour of grain boundary engineered nickel 1 journal September 1997
Interactions between non-screw lattice dislocations and coherent twin boundaries in face-centered cubic metals journal March 2008
Dislocation–twin interactions in nanocrystalline fcc metals journal January 2011
On the effect of grain boundary segregation on creep and creep rupture journal April 2012
Free surface effects on stress-driven grain boundary sliding and migration processes in nanocrystalline materials journal December 2016
Do voids nucleate at grain boundaries during ductile rupture? journal September 2017
Nanoscale conditions for ductile void nucleation in copper: Vacancy condensation and the growth-limited microstructural state journal February 2020
Grain boundaries and interfaces in slip transfer journal August 2014
Dislocation interactions with grain boundaries journal August 2014
Atomsk: A tool for manipulating and converting atomic data files journal December 2015
Effect of loading conditions on nucleation of nano void and failure of nanocrystalline aluminum: An atomistic investigation journal May 2017
In-situ SEM investigation on fracture behavior of GTD222 superalloy during tensile process at 760 °C journal November 2020
Atomic-scale modeling of the void nucleation, growth, and coalescence in Al at high strain rates journal August 2019
Dynamic abnormal grain growth in tantalum journal July 2014
Grain boundary sliding in copper and its relation to cavity formation during creep journal January 2016
Growth of preexisting abnormal grains in molybdenum under static and dynamic conditions journal April 2017
The interaction mechanism of screw dislocations with coherent twin boundaries in different face-centred cubic metals journal March 2006
Crystallographic orientation dependent fracture behavior in tantalum single crystals journal January 2021
Imperfections in Crystalline Solids book January 2018
The Microstructure and Creep Behavior of Cold Rolled Udimet 188 Sheet journal December 2010
A Review of Strain Analysis Using Electron Backscatter Diffraction journal March 2011
Evaluating Deformation-Induced Grain Orientation Change in a Polycrystal During In Situ Tensile Deformation using EBSD journal July 2015
The Benefits and Applications of a CMOS-based EBSD Detector journal August 2018
Sequential slip transfer of mixed-character dislocations across Σ3 coherent twin boundary in FCC metals: a concurrent atomistic-continuum study journal January 2016
Grain boundary sliding and intergranular fracture behaviour of copper bicrystals journal May 1978
Effect of thermomechanical processing on the creep behaviour of Udimet alloy 188 journal February 2008
In situ and tomographic analysis of dislocation/grain boundary interactions in α-titanium journal January 2014
Cavity nucleation in the early stages of creep journal February 1969
Void growth by dislocation adsorption journal December 2019
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
Structural stability and lattice defects in copper: Ab initio , tight-binding, and embedded-atom calculations journal May 2001
The Role of Grain Boundaries in Creep Deformation journal January 1972
The Nucleation and Growth of Cavities in Iron during Deformation at Elevated Temperatures journal January 1975
Three-dimensional analysis of creep voids in copper by serial sectioning combined with large field EBSD journal May 2014
The Role of Interfacial Dislocations in the Nucleation of Intergranular Creep Cavities journal January 1979
Strain-Induced Cavity Development during Creep journal January 1969
Prestrain, Cavitation, and Creep Ductility journal January 1974
Grain Boundary Migration in Metals book January 2009
The evolution of grain-boundary cracking evaluated through in situ tensile-creep testing of Udimet alloy 188 journal February 2008
Microstructural Study of Grain Boundary Cavitation during High Temperature Deformation of Al-4.5%Mg Alloy journal January 1991