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Title: Inherent structure length in metallic glasses: Simplicity behind complexity

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep12137· OSTI ID:1259700
 [1];  [1];  [2];  [1];  [1];  [3];  [1];  [1]
  1. Univ. of Science and Technology Beijing, Beijing (China). State Key Lab. for Advanced Metals and Materials
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States)

One of the central themes in materials science is the structure-property relationship. In conventional crystalline metals, their mechanical behaviour is often dictated by well-defined structural defects such as dislocations, impurities, and twins. However, the structure-property relationship in amorphous alloys is far from being understood, due to great difficulties in characterizing and describing the disordered atomic-level structure. Here, we report a universal, yet simple, correlation between the macroscopic mechanical properties (i.e., yield strength and shear modulus) and a unique characteristic structural length in metallic glasses (MGs). Lastly, our analysis indicates that this characteristic length can incorporate effects of both the inter-atomic distance and valence electron density in MGs, and result in the observed universal correlation. The current findings shed lights on the basic understanding of mechanical properties of MGs from their disordered atomic structures.

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:
51371003; 51422101; 51271212
OSTI ID:
1259700
Journal Information:
Scientific Reports, Vol. 5; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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Cited By (5)

Revealing the Microstates of Body-Centered-Cubic (BCC) Equiatomic High Entropy Alloys journal June 2017
Universal structural parameter to quantitatively predict metallic glass properties journal December 2016
Atomic and electronic basis for the serrations of refractory high-entropy alloys journal June 2017
Atomic arrangement in CuZr-based metallic glass composites under tensile deformation journal January 2020
Auxetic crystals under stress: Peering into their mechanics using x-rays journal January 2019

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