Investigation of grain size and geometrically necessary dislocation density dependence of flow stress in Mg-4Al by using nanoindentation

E Song, MT Andani, A Misra - Acta Materialia, 2024 - Elsevier
Abstract Models for grain size dependence of flow stress typically ignore contributions from
geometrically necessary dislocations (GNDs) in the grain boundary regions. Ashby had …

Strong resistance to shear instability in multilayered metallic composites by nanoscale amorphous-BCC crystalline interfaces

F Qin, F Chen, J Hou, W Lu, S Chen, J Li - Materials Science and …, 2024 - Elsevier
Experiments have shown that high strength and high plastic stability are difficult to be
simultaneously obtained in crystalline-amorphous layered composites. Here we report a …

Revealing the strengthening contribution of stacking faults, dislocations and grain boundaries in severely deformed LPBF AlSi10Mg alloy

P Snopiński, M Kotoul, J Petruška, S Rusz, K Żaba… - Scientific Reports, 2023 - nature.com
In this study, microstructural features direct metal laser melted (DMLM) aluminium–silicon-
magnesium (AlSi10Mg) are investigated using advanced transmission electron microscopy …

Crystalline–Amorphous Nanostructures: Microstructure, Property and Modelling

B Wei, L Li, L Shao, J Wang - Materials, 2023 - mdpi.com
Crystalline metals generally exhibit good deformability but low strength and poor irradiation
tolerance. Amorphous materials in general display poor deformability but high strength and …

TEM Study of a Layered Composite Structure Produced by Ion-Plasma Treatment of Aluminum Coating on the Ti-6Al-4V Alloy

A Nikolaev, K Ramazanov, A Nazarov… - Journal of Composites …, 2023 - mdpi.com
Using the methods of transmission electron microscopy and energy-dispersive
spectroscopy, we study the microstructure and phase composition of the coating and …

Revealing multiple strengthening transitions in crystalline-amorphous nanolaminates through molecular dynamics

F Shuang, B Wang, K Aifantis - Materials Today Communications, 2023 - Elsevier
Crystalline-amorphous nanolaminates allow for a unique combination of high strength and
good ductility. This promising mechanical behavior is attributed to the different deformation …

Effects of Oxygen Pressure on the Microstructures and Nanomechanical Properties of Samarium-Doped BiFeO3 Thin Films

CS Gao, SR Jian, PH Le, WC Chou, JY Juang… - Micromachines, 2023 - mdpi.com
In this study, samarium (Sm-10at%)-doped BiFeO3 (SmBFO) thin films were grown on
platinum-coated glass substrates using pulsed laser deposition (PLD) to unveil the …

In‐Situ Observation of Atomic Diffusion at Epitaxial Al–Si Interface

J Wang, Q Liu, R Feng, H Ye, X Xu, R Wang… - physica status solidi … - Wiley Online Library
High‐quality aluminum (Al)/silicon (Si) heterojunction is crucial in a wide range of
applications, such as superconductivity, interfacial heat exchanging, interconnection of Si …