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In Situ High-Cycle Fatigue Reveals Importance of Grain Boundary Structure in Nanocrystalline Cu-Zr

Journal Article · · JOM. Journal of the Minerals, Metals & Materials Society
 [1];  [2];  [2];  [2];  [2];  [2];  [3]
  1. Univ. of California, Irvine, CA (United States); Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  3. Univ. of California, Irvine, CA (United States)

The radiation tolerance of metals can be improved through the incorporation of surfacesand interfaces within the material. Nanocrystalline metals are especially attractive due to theirlarge interfacial volume fraction in the form of grain boundaries, but grain growth duringirradiation usually degrades any improvement in radiation tolerance. Therefore, methods to limitgrain growth and simultaneously improve the radiation tolerance of nanocrystalline metals areneeded. Amorphous intergranular films are unique grain boundary structures that are predicted tohave improved sink efficiencies compared to traditional ordered grain boundaries due to theirincreased thickness and amorphous structure. In addition, amorphous intergranular films havebeen shown to improve the grain size stability of nanocrystalline alloys since they arethermodynamically-preferred at very high temperatures and also can kinetically slow migrationdue to the interface being heavily doped. In this study, ball milled nanocrystalline Cu-Zr alloysare heat treated to either have only ordered grain boundaries or to contain amorphous intergranularfilms distributed throughout the grain boundary network, and are then subjected to in situtransmission electron microscopy irradiation and ex situ bulk irradiation. Differences in defectdensity and grain growth due to grain boundary structural transitions are then investigated. Whenamorphous intergranular films are incorporated within the material, not only is the net sinkefficiency of the entire grain boundary network increased, but grain growth is also limited, leadingto nanocrystalline alloys with improved radiation tolerance.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1650169
Report Number(s):
SAND2020--8425J; 689935
Journal Information:
JOM. Journal of the Minerals, Metals & Materials Society, Journal Name: JOM. Journal of the Minerals, Metals & Materials Society Journal Issue: 4 Vol. 71; ISSN 1047-4838
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (60)

Breakthroughs in Optimization of Mechanical Properties of Nanostructured Metals and Alloys journal September 2005
A new MEMS-based system for ultra-high-resolution imaging at elevated temperatures journal March 2009
Crack bridging by uncracked ligaments during fatigue-crack growth in SiC-reinforced aluminum-alloy composites journal May 1989
Crack deflection: Implications for the growth of long and short fatigue cracks journal November 1983
Fatigue limit and crack growth in ultra-fine grain metals produced by severe plastic deformation journal December 2006
The onset and evolution of fatigue-induced abnormal grain growth in nanocrystalline Ni–Fe journal October 2016
A Review of Fatigue Behavior in Nanocrystalline Metals journal October 2009
Fatigue and Fracture of a Bulk Nanocrystalline NiFe Alloy journal March 2008
High-Temperature Stability and Grain Boundary Complexion Formation in a Nanocrystalline Cu-Zr Alloy journal September 2015
Mechanisms of fatigue crack propagation in metals, ceramics and composites: Role of crack tip shielding journal August 1988
On the contribution of triple junctions to the structure and properties of nanocrystalline materials journal July 1990
Evaluation of the staircase and the accelerated test methods for fatigue limit distributions journal January 2001
Determination of Grain-Boundary Film Thickness by the Fresnel Fringe Imaging Technique journal December 1998
Deformation of electrodeposited nanocrystalline nickel journal January 2003
In-situ TEM tensile testing of DC magnetron sputtered and pulsed laser deposited Ni thin films journal April 2003
Grain size effects on the fatigue response of nanocrystalline metals journal October 2003
Mechanical behavior of nanocrystalline metals and alloys11The Golden Jubilee Issue—Selected topics in Materials Science and Engineering: Past, Present and Future, edited by S. Suresh journal November 2003
Complexion: A new concept for kinetic engineering in materials science journal October 2007
Sliding wear of nanocrystalline Ni–W: Structural evolution and the apparent breakdown of Archard scaling journal July 2010
Fatigue-induced grain coarsening in nanocrystalline platinum films journal February 2011
Fracture toughness and fatigue crack growth characteristics of nanotwinned copper journal April 2011
Superior fatigue crack growth resistance, irreversibility, and fatigue crack growth–microstructure relationship of nanocrystalline alloys journal November 2011
Inter- and intragranular plasticity mechanisms in ultrafine-grained Al thin films: An in situ TEM study journal January 2013
Anatomy of nanomaterial deformation: Grain boundary sliding, plasticity and cavitation in nanocrystalline Ni journal September 2013
Amorphous intergranular films as toughening structural features journal May 2015
Stress-assisted grain growth in nanocrystalline metals: Grain boundary mediated mechanisms and stabilization through alloying journal June 2017
Materials selection rules for amorphous complexion formation in binary metallic alloys journal November 2017
Grain boundary complexions and the strength of nanocrystalline metals: Dislocation emission and propagation journal June 2018
A study of the influence of grain boundaries on short crack growth during varying load using a dislocation technique journal October 2004
Fatigue behavior of nanocrystalline metals and alloys journal October 2005
The physics of fatigue crack initiation journal December 2013
The role of heterogeneous deformation on damage nucleation at grain boundaries in single phase metals journal September 2009
Progress in development of fracture toughness test methods for SENT specimens journal September 2017
Stress intensity factor and T-stress solutions for three-dimensional clamped single edge notched tension (SENT) specimens journal December 2018
Quantitative in-situ TEM nanotensile testing of single crystal Ni facilitated by a new sample preparation approach journal March 2017
Grain-size stabilization by impurities and effect on stress-coupled grain growth in nanocrystalline Al thin films journal June 2008
Revisiting fatigue crack growth in various grain size regimes of Ni journal October 2015
Concurrent in situ ion irradiation transmission electron microscope journal November 2014
Shear bands at the fatigue crack tip of nanocrystalline nickel journal July 2007
Direct dynamic atomic mechanisms of strain-induced grain rotation in nanocrystalline, textured, columnar-structured thin gold films journal February 2011
In situ observation of stress induced grain boundary migration in nanocrystalline gold journal June 2017
Evidence that abnormal grain growth precedes fatigue crack initiation in nanocrystalline Ni-Fe journal January 2018
Amorphous complexions enable a new region of high temperature stability in nanocrystalline Ni-W journal September 2018
High Cycle Fatigue in the Transmission Electron Microscope journal July 2016
Pushing the Envelope of In Situ Transmission Electron Microscopy journal May 2015
Mechanisms of fatigue-crack propagation in ductile and brittle solids journal January 1999
Formation of monatomic metallic glasses through ultrafast liquid quenching journal August 2014
Manipulating the interfacial structure of nanomaterials to achieve a unique combination of strength and ductility journal February 2016
Atomistic observation of a crack tip approaching coherent twin boundaries journal March 2014
Exceptional high fatigue strength in Cu-15at.%Al alloy with moderate grain size journal June 2016
Focused-ion-beam induced grain growth in magnetic materials for recording heads journal January 2002
Ultrahigh strength and high ductility of bulk nanocrystalline copper journal August 2005
Nanocracks at grain boundaries in nanocrystalline materials journal October 2004
Crack propagation in high stress fatigue journal May 1962
Intergranular fracture in nanocrystalline metals journal August 2002
Healing of Nanocracks by Disclinations journal October 2013
Atomistic Mechanisms of Fatigue in Nanocrystalline Metals journal April 2005
Fatigue crack closure: a review of the physical phenomena: Fatigue Crack Closure journal February 2017
Bridging and Damage Zones in Crack Growth journal June 1988
Grain Growth in Thin Films journal August 1990

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