A5017838173- Microstructure and mechanical properties
- Magnesium Alloys: Properties and Applications
- Aluminum Alloys Composites Properties
- Metal and Thin Film Mechanics
- Titanium Alloys Microstructure and Properties
- MXene and MAX Phase Materials
- Aluminum Alloy Microstructure Properties
- Ferroelectric and Piezoelectric Materials
- Boron and Carbon Nanomaterials Research
- Hydrogen Storage and Materials
- Nuclear Materials and Properties
- Cancer-related molecular mechanisms research
- Neuroinflammation and Neurodegeneration Mechanisms
- Calcium Carbonate Crystallization and Inhibition
- Ion-surface interactions and analysis
- Traditional Chinese Medicine Analysis
- Acoustic Wave Resonator Technologies
- Cervical Cancer and HPV Research
- Superconductivity in MgB2 and Alloys
- Immune Response and Inflammation
- Geological and Geochemical Analysis
- Electromagnetic Effects on Materials
- Cancer, Lipids, and Metabolism
- Multiferroics and related materials
- Copper Interconnects and Reliability
Shanghai Jiao Tong University
2021-2024
Chengde Medical University
2024
Guangzhou University of Chinese Medicine
2023-2024
University of Nebraska–Lincoln
2016-2023
Ocean University of China
2022
Los Alamos National Laboratory
2019-2020
Shenzhen University
2019
National University of Singapore
2008
A controversy concerning the description of twinning, whether it is shear-shuffle or pure glide-shuffle shuffle, has developed. There disagreement about interpretation transmission electron microscopic observations, atomistic simulations and theories for twin growth. In this article, we highlight atomic-level, characteristic, equilibrium non-equilibrium boundaries corresponding boundary defects associated with three-dimensional 'normal', 'forward' 'lateral' propagation growth/annealing...
Abstract The three-dimensional nature of twins, especially the atomic structures and motion mechanisms boundary lateral to shear direction twin, has never been characterized at level, because such is, in principle, crystallographically unobservable. We thus refer it here as dark side twin. Here, using high-resolution transmission electron microscopy atomistic simulations, we characterize "Equation missing" deformation twins magnesium. It is found that serrated comprised coherent twin...
The abrupt occurrence of twinning when Mg is deformed leads to a highly anisotropic response, making it too unreliable for structural use and unpredictable observation. Here, we describe an in-situ transmission electron microscopy experiment on crystals with strategically designed geometries visualization long-proposed but unverified mechanism. Combining atomistic simulations topological analysis, conclude that twin nucleation occurs through pure-shuffle mechanism requires prismatic-basal...
Abstract Deformation twins are three-dimensional domains, traditionally viewed as ellipsoids because of their two-dimensional lenticular sections. In this work, we performed statistical analysis twin shapes viewing along three orthogonal directions: the ‘dark side’ (DS) view shear direction ( η 1 ), twinning plane normal (TPN) k ) and ‘bright (BS) λ (= × ). Our electron back-scatter diffraction results show that in DS BS views normally exhibit a shape, whereas they an irregular shape TPN...
Grain boundary (GB) plasticity dominates the mechanical behaviours of nanocrystalline materials. Under loading, GB configuration and its local deformation geometry change dynamically with deformation; dynamic variation deformability, however, remains largely elusive, especially regarding relation frequently-observed GB-associated twins in Attention here is focused on dynamics metallic nanocrystals, by means well-designed situ nanomechanical testing integrated molecular simulations. GBs low...
Twinning is a critically important deformation mode in hexagonal close-packed metals. Twins are three-dimensional (3D) domains, whose growth mediated by the motion of facets bounding 3D twin domains and influences work hardening An understanding transformations therefore necessitates that atomic-scale structure intrinsic mobilities be known characterized. The present addresses former point systematically characterizing boundary structures {1¯012} twins magnesium using high-resolution...
Knowledge of deformation mechanisms in aragonite, one the three crystalline polymorphs CaCO3, is essential to understand overall excellent mechanical performance nacres. Dislocation slip and twinning were claimed previously as plasticity carriers but crystallographic features dislocations twins have been poorly understood. Here, utilizing various transmission electron microscopy techniques, we reveal atomic structures twins, partial dislocations, associated stacking faults. Combining a...