Universal percolation threshold for ductile-brittle transition of amorphous alloys

Ping, Zhihai; Ming, Zhong; Long, Zhilin; Xu, Xiaojin; Liao, Guangkai; Chen, Heng

doi:10.1016/j.jnoncrysol.2018.03.012

Cited by 5 publications

(1 citation statement)

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“…The atomic structure of amorphous alloy is loosely arranged and there are many excess pores, i.e., free volume, between atoms and atoms or atom clusters and atom clusters ( Figure 12 f) [ 176 , 179 ]. Supra-nano-glass (type 2) is a new type of amorphous alloy with heterogeneous microstructure; the heterogeneity is manifested in the difference in the densities of glassy grains and GGIs, which leads to a heterogeneous distribution of free volume.…”

Section: Supra-nano-dual-phase Nanostructurementioning

confidence: 99%

Nanostructured Metals with an Excellent Synergy of Strength and Ductility: A Review

Chen

2022

Materials

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Nanocrystalline metals developed based on fine grain strengthening always have an excellent strength, but are accompanied by a drop in ductility. In the past 20 years, substantial efforts have been dedicated to design new microstructures and develop the corresponding processing technologies in order to solve this problem. In this article, the novel nanostructures designed for simultaneously achieving high strength and high ductility developed in recent years, including bimodal grain size distribution nanostructure, nanotwinned structure, hierarchical nanotwinned structure, gradient nanostructure, and supra-nano-dual-phase nanostructure, are reviewed. Based on a comprehensive understanding of the simultaneously strengthening and toughening mechanisms, the microstructures and corresponding processing techniques are mainly discussed, and the related prospects that may be emphasized in the future are proposed.

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Section: Supra-nano-dual-phase Nanostructurementioning

confidence: 99%