Journal
SCIENTIFIC REPORTS
Volume 5, Issue -, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/srep12137
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Funding
- National Natural Science Foundation of China [51371003, 51422101, 51271212]
- International Science AMP
- Technology Cooperation Program of China, 111 Project [B07003]
- Program for Changjiang Scholars and Innovative Research Team in University
- Fundamental Research Funds for the Central Universities
- Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy
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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. Herein, 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). 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.
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