Inherent structure length in metallic glasses: Simplicity behind complexity

Yuan Wu; Hui Wang; Yongqiang Cheng; Xiongjun Liu; Xidong Hui; Taigang Nieh; Yandong Wang; Zhaoping Lu

doi:10.1038/srep12137

Inherent structure length in metallic glasses: Simplicity behind complexity

Yuan Wu, Hui Wang, Yongqiang Cheng, Xiongjun Liu, Xidong Hui, Taigang Nieh, Yandong Wang, Zhaoping Lu

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

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.

Original language	English
Article number	12137
Journal	Scientific Reports
Volume	5
DOIs	https://doi.org/10.1038/srep12137
State	Published - Aug 6 2015

Funding

This research was supported in part by National Natural Science Foundation of China (Nos. 51371003, 51422101, 51271212), International Science & Technology Cooperation Program of China, 111 Project (B07003) and Program for Changjiang Scholars and Innovative Research Team in University. Y.W. and X.J.L. acknowledge the financial support from “the Fundamental Research Funds for the Central Universities”. Y.Q.C was supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy. Fruitful discussion with Profs. E. Ma at Johns Hopkins University, U. Ramamurty at Indian Institute of Science and Y.M. Wang at Dalian University of Technology are gratefully acknowledged.

Funders	Funder number
Scientific User Facilities Division
U.S. Department of Energy
Basic Energy Sciences
National Natural Science Foundation of China	51271212, 51371003, 51422101
Fundamental Research Funds for the Central Universities
International Science and Technology Cooperation Programme
Higher Education Discipline Innovation Project	B07003
Program for Changjiang Scholars and Innovative Research Team in University

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AU - Wu, Yuan

AU - Wang, Hui

AU - Cheng, Yongqiang

AU - Liu, Xiongjun

AU - Hui, Xidong

AU - Nieh, Taigang

AU - Wang, Yandong

AU - Lu, Zhaoping

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Inherent structure length in metallic glasses: Simplicity behind complexity

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