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Nanotwinned alloys under high pressure

Journal Article · · Acta Materialia
 [1];  [2];  [3];  [1];  [4];  [5];  [5];  [1];  [4];  [6];  [2];  [1]
  1. Stanford Univ., CA (United States)
  2. Nanyang Technological Univ. (Singapore); Agency for Science, Technology and Research (A*STAR) (Singapore)
  3. Stanford Univ., CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  4. Agency for Science, Technology and Research (A*STAR) (Singapore)
  5. Univ. of Chicago, IL (United States)
  6. Univ. of Southern California, Los Angeles, CA (United States)
Nanotwinned alloys are of interest due to their high strength and ductility, but twin boundaries may not be stable under shear. Computational studies indicate that high hydrostatic pressure may suppress detwinning mechanisms. Here, in this study, we investigate the microstructural changes of nanotwinned-nanocrystalline copper-nickel and Inconel 725 alloys under quasi-hydrostatic pressures up to 50 gigapascals (GPa). The alloys are compressed in a diamond anvil cell. In-situ x-ray diffraction (XRD) and ex-situ transmission electron microscopy (TEM) were employed to monitor microstructural changes. Twin boundary deformation and grain growth occur at 11.4 GPa quasi-hydrostatic pressure in the copper-nickel alloy. Molecular dynamics (MD) simulations reveal that hydrostatic pressure causes elevated local shear stress at grain boundaries, which leads to atomic rearrangements. A superposition of hydrostatic and deviatoric pressures lead to partial dislocation mediated twin boundary migration. In contrast, the Inconel 725 alloy showed stable twin and grain boundaries up to a quasi-hydrostatic pressure of 12.7 GPa. Texture, high solid solution strengthening, and low stacking fault energy are hypothesized to the enhanced microstructural stability in Inconel 725.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
A*STAR Merit Award Fellowship; National Science Foundation (NSF); US Army Research Office (ARO); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-06CH11357; AC52-07NA27344; FG02-94ER14466
OSTI ID:
2516796
Report Number(s):
LLNL--JRNL-863235; 1096221
Journal Information:
Acta Materialia, Journal Name: Acta Materialia Vol. 285; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (76)

Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Low cycle fatigue behavior of inconel 718 at 298 K and 823 K journal July 1977
Calculation of GB Energies and Grain-Boundary Self-diffusion in Nickel and Verification of Borisov Relations for Various Symmetric Tilt Grain Boundaries journal February 2024
Stacking-fault anomalies and the measurement of stacking-fault free energy in f.c.c. thin films journal December 1969
Systematic analysis of local atomic structure combined with 3D computer graphics journal March 1994
An atomistic dislocation mechanism of pressure-dependent plastic flow in aluminum journal September 1999
Direct observation of deformation-induced grain growth during the nanoindentation of ultrafine-grained Al at room temperature journal October 2004
Strength, strain-rate sensitivity and ductility of copper with nanoscale twins journal December 2006
In situ TEM observations of fast grain-boundary motion in stressed nanocrystalline aluminum films journal August 2008
Grain-boundary shear-migration coupling. II. Geometrical model for general boundaries journal May 2009
Plastic anisotropy and associated deformation mechanisms in nanotwinned metals journal January 2013
The mobility of growth twins synthesized by sputtering: Tailoring the twin thickness journal May 2016
Experimental quantification of mechanically induced boundary migration in nanocrystalline copper films journal November 2017
A systematic study of grain boundary segregation and grain boundary formation energy using a new copper–nickel embedded-atom potential journal September 2019
Development of a heterogeneous nanostructure through abnormal recrystallization of a nanotwinned Ni superalloy journal August 2020
Hydrostatic pressure effects on deformation mechanisms of nanocrystalline fcc metals journal April 2014
Atomsk: A tool for manipulating and converting atomic data files journal December 2015
The effect of hydrostatic pressure on the shear deformation of Cu symmetric tilt interfaces journal July 2019
Evolution of microscopic strains, stresses, and dislocation density during in-situ tensile loading of additively manufactured AlSi10Mg alloy journal April 2021
Correlation between lattice distortion and friction stress in Ni-based equiatomic alloys journal July 2017
Grain-size dependent elastic-plastic deformation behaviour of inconel 625 alloy studied by in-situ neutron diffraction journal November 2021
Compression of silver in a diamond anvil cell: Pressure dependences of strength and grain size from X-ray diffraction data journal August 2010
Quantitative XRD analysis of {110} twin density in biotic aragonites journal December 2012
Twinning/detwinning-mediated grain growth and mechanical properties of free-standing nanotwinned Ni foils: Grain size and strain rate effects journal March 2015
Diffraction and single-crystal elastic constants of Inconel 625 at room and elevated temperatures determined by neutron diffraction journal September 2016
Hydrostatic pressure effect on mechanical behavior and texture evolution of Al and Brass journal January 2017
Competitive effect of stacking fault energy and short-range clustering on the plastic deformation behavior of Cu-Ni alloys journal January 2017
High pressure deformation induced precipitation in Al–Zn–Mg–Cu alloy (Al7075) journal September 2022
Tensile properties of copper with nano-scale twins journal May 2005
Grain size dependence of the bulk modulus of nanocrystalline nickel journal September 2006
Rapid and mass growth of stress-induced nanowhiskers on the surfaces of evaporated polycrystalline Cu films journal June 2007
Grain coarsening during compression of bulk nanocrystalline nickel and copper journal January 2008
Influence of slip transmission on the migration of incoherent twin boundaries in epitaxial nanotwinned Cu journal January 2011
High-pressure torsion of copper samples containing columns of highly aligned nanotwins journal November 2011
In situ observation of stress induced grain boundary migration in nanocrystalline gold journal June 2017
Strengthening-softening transition in yield strength of nanotwinned Cu journal March 2019
In-situ observation of cooperative grain boundary sliding and migration in the nano-twinned nanocrystalline-Au thin-films journal April 2020
Grain boundary evolution of highly nanotwinned alloys: Effect of initial twinned microstructure journal January 2021
High pressure suppressing grain boundary migration in a nanograined nickel journal June 2022
Stress-Induced Structural Transformations in Au Nanocrystals journal October 2020
Dislocation nucleation governed softening and maximum strength in nano-twinned metals journal April 2010
Transition of dislocation nucleation induced by local stress concentration in nanotwinned copper journal July 2015
Defective twin boundaries in nanotwinned metals journal May 2013
Deformation mechanisms in nanotwinned metal nanopillars journal July 2012
Twinning-assisted dynamic adjustment of grain boundary mobility journal November 2021
High-pressure strengthening in ultrafine-grained metals journal February 2020
Nanocrystalline iron at high pressure journal May 2001
Measurement and analysis of nonhydrostatic lattice strain component in niobium to 145 GPa under various fluid pressure-transmitting media journal October 2001
X‐Ray Measurement of Stacking Fault Widths in fcc Metals journal November 1961
Calibration of the pressure dependence of the R 1 ruby fluorescence line to 195 kbar journal June 1975
Elastic Properties of Metals and Alloys. II. Copper journal October 1974
Topological view of the thermal stability of nanotwinned copper journal January 2013
Atomic-scale studies on the effect of boundary coherency on stability in twinned Cu journal January 2014
Elastic anisotropy of crystals journal September 2016
DIOPTAS : a program for reduction of two-dimensional X-ray diffraction data and data exploration journal May 2015
Hydrostaticity in high pressure experiments: some general observations and guidelines for high pressure experimenters journal March 2021
High-pressure torsion-induced grain growth and detwinning in cryomilled Cu powders journal November 2010
Effects of solutes on the thermal stability of nanotwinned materials journal July 2014
Hydrostatic limits of 11 pressure transmitting media journal March 2009
Nonhydrostatic compression of gold powder to 60 GPa in a diamond anvil cell: estimation of compressive strength from x-ray diffraction data journal June 2006
Visualization and analysis of atomistic simulation data with OVITO–the Open Visualization Tool journal December 2009
Nonhydrostatic compression of elastically anisotropic polycrystals. I. Hydrostatic limits of 4:1 methanol-ethanol and paraffin oil journal February 1998
Nucleation of Dislocations in 3.9 nm Nanocrystals at High Pressure journal March 2020
Diamond anvil cell and high-pressure physical investigations journal January 1983
Effective hydrostatic limits of pressure media for high-pressure crystallographic studies journal January 2007
The lattice parameter of the α copper–titanium solid solution journal December 1970
Compression Behaviour of Elastically Anisotropic Polycrystals Using Energy-Dispersive X-ray Diffraction journal May 1997
Effect of texture and elastic anisotropy of copper microstructure on reliability conference January 2016
Shear Deformation Behavior of Copper Nanocrystals Under Imposed Hydrostatic Stress journal September 2015
Ultrastrong nanotwinned pure nickel with extremely fine twin thickness journal July 2021
Plastic Deformation with Reversible Peak Broadening in Nanocrystalline Nickel journal April 2004
Strengthening Materials by Engineering Coherent Internal Boundaries at the Nanoscale journal April 2009
Observation of Atomic Diffusion at Twin-Modified Grain Boundaries in Copper journal August 2008
Revealing the Maximum Strength in Nanotwinned Copper journal January 2009
Cryoforged nanotwinned titanium with ultrahigh strength and ductility journal September 2021
Thermal stability of highly nanotwinned copper: The role of grain boundaries and texture journal November 2012

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