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Title: Structural rejuvenation in bulk metallic glasses

Journal Article · · Acta Materialia
 [1];  [1];  [1];  [2];  [3];  [4]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Tohoku Univ., Sendai (Japan)
  4. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Using high-energy X-ray diffraction we study structural changes in bulk metallic glasses after uniaxial compressive homogeneous deformation at temperatures slightly below the glass transition. We observe that deformation results in structural disordering corresponding to an increase in the fictive, or effective, temperature. However, the structural disordering saturates after yielding. Lastly, examination of the experimental structure and molecular dynamics simulation suggests that local changes in the atomic connectivity network are the main driving force of the structural rejuvenation.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1185837
Alternate ID(s):
OSTI ID: 1318774
Journal Information:
Acta Materialia, Vol. 86; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 81 works
Citation information provided by
Web of Science

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Cited By (18)

Ultrafast extreme rejuvenation of metallic glasses by shock compression journal August 2019
Spatial correlation of elastic heterogeneity tunes the deformation behavior of metallic glasses journal April 2018
Two-way tuning of structural order in metallic glasses journal January 2020
Thermomechanical processing of metallic glasses: extending the range of the glassy state journal June 2016
Mechanical Relaxation-to-Rejuvenation Transition in a Zr-based Bulk Metallic Glass journal April 2017
Restoration of the structure of amorphous and partially crystalline alloys using cryogenic thermocycling journal November 2019
Glass transition memorized by the enthalpy-entropy compensation in the shear thinning of supercooled metallic liquids journal May 2018
Strategies to tailor serrated flows in metallic glasses journal January 2019
Key role of excess atomic volume in structural rearrangements at the front of moving partial dislocations in copper nanocrystals journal March 2019
Thermal Rejuvenation of an Mg-Based Metallic Glass journal January 2019
Revealing anelasticity and structural rearrangements in nanoscale metallic glass films using in situ TEM diffraction journal September 2016
Stress breaks universal aging behavior in a metallic glass journal November 2019
Thermal expansion of Pd-based metallic glasses by ab initio methods and high energy X-ray diffraction journal November 2017
Thermal expansion of Pd-based metallic glasses by ab initio methods and high energy X-ray diffraction text January 2017
Thermal expansion of Pd-based metallic glasses by ab initio methods and high energy X-ray diffraction text January 2017
Thermal expansion of Pd-based metallic glasses by ab initio methods and high energy X-ray diffraction text January 2017
Revealing anelasticity and structural rearrangements in nanoscale metallic glass films using in situ TEM diffraction text January 2016
Thermally induced failure mechanism transition and its correlation with short-range order evolution in metallic glasses journal December 2016

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