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Title: Microyielding of core-shell crystal dendrites in a bulk-metallic-glass matrix composite

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep04394· OSTI ID:1224522
 [1];  [2];  [3];  [4];  [5];  [6];  [6];  [7];  [8];  [5]
  1. National Central Univ., Jongli (Taiwan)
  2. Taiyuan Univ. of Technology, Taiyuan (China)
  3. Univ. of Manchester, Manchester (United Kingdom); National Physics Lab., London (United Kingdom)
  4. National Center for High-Performance Computing, Taichung (Taiwan)
  5. European Synchrotron Radiation Facility Beamline, Grenoble (France)
  6. Univ. of Tennessee, Knoxville, TN (United States)
  7. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  8. Univ. of Science and Technology of China, Beijing (China)

In-situ synchrotron x-ray experiments have been used to follow the evolution of the diffraction peaks for crystalline dendrites embedded in a bulk metallic glass matrix subjected to a compressive loading-unloading cycle. We observe irreversible diffraction-peak splitting even though the load does not go beyond half of the bulk yield strength. The chemical analysis coupled with the transmission electron microscopy mapping suggests that the observed peak splitting originates from the chemical heterogeneity between the core (major peak) and the stiffer shell (minor peak) of the dendrites. A molecular dynamics model has been developed to compare the hkl-dependent microyielding of the bulk metallic-glass matrix composite. As a result, the complementary diffraction measurements and the simulation results suggest that the interfaces between the amorphous matrix and the (211) crystalline planes relax under prolonged load that causes a delay in the reload curve which ultimately catches up with the original path.

Research Organization:
Univ. of Tennessee, Knoxville, TN (United States); Univ. of Illinois Urbana-Champaign, IL (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0011194
OSTI ID:
1224522
Journal Information:
Scientific Reports, Vol. 4; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

References (50)

Transition from a strong-yet-brittle to a stronger-and-ductile state by size reduction of metallic glasses journal February 2010
Extraordinary Plasticity of Ductile Bulk Metallic Glasses journal June 2006
Transformation-mediated ductility in CuZr-based bulk metallic glasses journal May 2010
Microstructure and tensile properties of high-strength high-ductility Ti-based amorphous matrix composites containing ductile dendrites journal November 2011
In situ high-energy X-ray diffraction studies of deformation-induced phase transformation in Ti-based amorphous alloy composites containing ductile dendrites journal August 2013
Innovative approach to the design of low-cost Zr-based BMG composites with good glass formation journal June 2013
A micromechanical model of toughening behavior in the dual-phase composite journal October 2010
Microstructure Controlled Shear Band Pattern Formation and Enhanced Plasticity of Bulk Metallic Glasses Containing in situ Formed Ductile Phase Dendrite Dispersions journal March 2000
Continuum Modeling of Bulk Metallic Glasses and Composites journal September 2010
Tensile deformation micromechanisms for bulk metallic glass matrix composites: From work-hardening to softening journal June 2011
An atomistic investigation of structural evolution in metallic glass matrix composites journal May 2013
Assessing the interfacial strength of an amorphous–crystalline interface journal May 2013
Evaluation of compressive deformation behavior of Zr55Al10Ni5Cu30 bulk metallic glass containing ZrC particles by synchrotron X-ray diffraction journal May 2012
The deformation units in metallic glasses revealed by stress-induced localized glass transition journal June 2012
Approaching the ideal elastic limit of metallic glasses journal January 2012
Enhanced mechanical properties of multilayered micropillars of amorphous ZrCuTi and nanocrystalline Ta layers journal July 2011
Effects of characteristics of Mo dispersions on the plasticity of Mg-based bulk metallic glass composites journal May 2011
A Tensile Deformation Model for In-situ Dendrite/Metallic Glass Matrix Composites journal October 2013
Roles of minor additions in formation and properties of bulk metallic glasses journal May 2007
Designing metallic glass matrix composites with high toughness and tensile ductility journal February 2008
A damage-tolerant glass journal January 2011
Micromechanics of deformation of metallic-glass–matrix composites from in situ synchrotron strain measurements and finite element modeling journal April 2005
Compressive yielding of tungsten fiber reinforced bulk metallic glass composites journal July 2003
Compressive deformation of in situ formed bulk metallic glass composites journal February 2006
Inhomogeneous flow and fracture of glassy materials journal June 2009
Micromechanisms of plastic deformation of a dendrite/Zr-based bulk-metallic-glass composite journal December 2009
White microbeam diffraction from distorted crystals journal August 2001
Two-glassy-phase bulk metallic glass with remarkable plasticity journal September 2007
Structural rejuvenation in a bulk metallic glass induced by severe plastic deformation journal January 2010
Microstructure of Fragile Metallic Glasses Inferred from Ultrasound-Accelerated Crystallization in Pd-Based Metallic Glasses journal December 2005
Structural anisotropy of amorphous alloys with creep-induced magnetic anisotropy journal February 2012
Signature of viscous flow units in apparent elastic regime of metallic glasses journal September 2012
The application of the eshelby method of internal stress determination to short fibre metal matrix composites journal November 1989
ZrNbCuNiAl bulk metallic glass matrix composites containing dendritic bcc phase precipitates journal April 2002
Interface structure and properties of a brass-reinforced Ni59Zr20Ti16Si2Sn3 bulk metallic glass composite journal August 2008
Spatiotemporally inhomogeneous plastic flow of a bulk-metallic glass journal January 2008
Yielding and intrinsic plasticity of Ti–Zr–Ni–Cu–Be bulk metallic glass journal August 2009
Heterogeneously randomized STZ model of metallic glasses: Softening and extreme value statistics during deformation journal January 2013
A two-phase model of large-strain plasticity in covalent nanostructures journal October 2012
Effects of size on the strength and deformation mechanism in Zr-based metallic glasses journal June 2011
Large scale molecular dynamics simulation of self-assembly processes in short and long chain cationic surfactants journal January 1999
Ideal strength of bcc molybdenum and niobium journal September 2002
Insight into the deformation behavior of niobium single crystals under uniaxial compression and tension at the nanoscale journal August 2009
Microscopic Constitutive Equation Theory for the Nonlinear Mechanical Response of Polymer Glasses journal August 2008
An elastic–plastic cohesive zone model for metal–ceramic interfaces at finite deformations journal February 2013
Ductile crystalline-amorphous nanolaminates journal June 2007
Atomistic free-volume zones and inelastic deformation of metallic glasses journal August 2010
High resolution X-ray tomography of short fatigue crack nucleation in austempered ductile cast iron journal July 2004
Tight-binding potentials for transition metals and alloys journal July 1993
Microscopic origin of slow dynamics at the good glass forming composition range in Zr1−xCux metallic liquids journal March 2010

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