Microstructures and properties of high-entropy alloys

Y Zhang, TT Zuo, Z Tang, MC Gao, KA Dahmen… - Progress in materials …, 2014 - Elsevier
This paper reviews the recent research and development of high-entropy alloys (HEAs).
HEAs are loosely defined as solid solution alloys that contain more than five principal …

Serration and noise behaviors in materials

Y Zhang, JP Liu, SY Chen, X Xie, PK Liaw… - Progress in Materials …, 2017 - Elsevier
Serration and noise behaviors in plastically deforming solids are related to avalanches of
deformation processes. In the stress-strain curves, the serration characteristics are visible as …

Towards a greater understanding of serrated flows in an Al-containing high-entropy-based alloy

J Brechtl, SY Chen, X Xie, Y Ren, JW Qiao… - International Journal of …, 2019 - Elsevier
A serrated flow, which occurs in a material undergoing mechanical deformation, is a
complex process of great engineering significance. Here statistical, dynamical, and …

Multiscale strain measurements of plastically deforming polycrystalline titanium: Role of deformation heterogeneities

C Efstathiou, H Sehitoglu, J Lambros - International Journal of Plasticity, 2010 - Elsevier
The purpose of this work was to characterize the spatial distribution of residual deformation
at the mesoscale (a few grains) and at the macroscale (hundreds of grains) in titanium …

Self-affine surface morphology of plastically deformed metals

M Zaiser, FM Grasset, V Koutsos, EC Aifantis - Physical review letters, 2004 - APS
We analyze the surface morphology of metals after plastic deformation over a range of
scales from 10 nm to 2 mm using atomic force microscopy and scanning white-light …

Mechanical properties of high-entropy alloys

H Diao, X Xie, F Sun, KA Dahmen, PK Liaw - High-entropy alloys …, 2016 - Springer
This chapter reviews mechanical properties of high-entropy alloys (HEAs) in the fields of
hardness, compression, tension, serration behavior, fatigue, and nanoindentation. It shows …

Obstacles and sources in dislocation dynamics: Strengthening and statistics of abrupt plastic events in nanopillar compression

S Papanikolaou, H Song, E Van der Giessen - Journal of the Mechanics …, 2017 - Elsevier
Mechanical deformation of nanopillars displays features that are distinctly different from the
bulk behavior of single crystals: Yield strength increases with decreasing size and plastic …

Universality class of nanocrystal plasticity: localization and self-organization in discrete dislocation dynamics

H Song, D Dimiduk, S Papanikolaou - Physical review letters, 2019 - APS
The universality class of the avalanche behavior in plastically deforming crystalline and
amorphous systems has been commonly discussed, despite the fact that the microscopic …

Statistics of dislocation avalanches in FCC and BCC metals: dislocation mechanisms and mean swept distances across microsample sizes and temperatures

J Alcalá, J Očenášek, J Varillas, J A. El-Awady… - Scientific reports, 2020 - nature.com
Plastic deformation in crystalline materials consists of an ensemble of collective dislocation
glide processes, which lead to strain burst emissions in micro-scale samples. To unravel the …

Four-stage model of earthquake generation in terms of fracture-induced electromagnetic emissions: a review

K Eftaxias, SM Potirakis, Y Contoyiannis - Complexity of seismic time series, 2018 - Elsevier
Based on a multidisciplinary analysis, the following four-stage model of earthquake (EQ)
dynamics by means of precursory electromagnetic (EM) emissions (EMEs) has been …