Serration and noise behaviors in materials
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 …
deformation processes. In the stress-strain curves, the serration characteristics are visible as …
Micro-plasticity and recent insights from intermittent and small-scale plasticity
Prior to macroscopic yielding, most materials undergo a regime of plastic activity that cannot
be resolved in conventional bulk deformation experiments. In this pre-yield, or micro-plastic …
be resolved in conventional bulk deformation experiments. In this pre-yield, or micro-plastic …
Avalanches and plastic flow in crystal plasticity: an overview
Crystal plasticity is mediated through dislocations, which form knotted configurations in a
complex energy landscape. Once they disentangle and move, they may also be impeded by …
complex energy landscape. Once they disentangle and move, they may also be impeded by …
Taming intermittent plasticity at small scales
The extreme miniaturization in modern technology calls for deeper insights into the non-
conventional, fluctuation dominated mechanics of materials operating at microscale. For …
conventional, fluctuation dominated mechanics of materials operating at microscale. For …
Dislocation dynamics in a nickel-based superalloy via in-situ transmission scanning electron microscopy
Micro-tensile specimens of nickel-based superalloy oligocrystals were tested in-situ in an
scanning electron microscope in transmission mode (TSEM) enabling observation of …
scanning electron microscope in transmission mode (TSEM) enabling observation of …
[HTML][HTML] The duration-energy-size enigma for acoustic emission
Acoustic emission (AE) measurements of avalanches in different systems, such as domain
movements in ferroics or the collapse of voids in porous materials, cannot be compared with …
movements in ferroics or the collapse of voids in porous materials, cannot be compared with …
Controlling strain bursts and avalanches at the nano-to micrometer scale
We demonstrate, through three-dimensional discrete dislocation dynamics simulations, that
the complex dynamical response of nano-and microcrystals to external constraints can be …
the complex dynamical response of nano-and microcrystals to external constraints can be …
The role of slow screw dislocations in controlling fast strain avalanche dynamics in body-centered cubic metals
Plasticity in body centered cubic (BCC) crystals is shown to be controlled by slow screw
dislocation motion, owing to the thermally-activated process of kink pair nucleation and …
dislocation motion, owing to the thermally-activated process of kink pair nucleation and …
[HTML][HTML] Simulating the mechanisms of serrated flow in interstitial alloys with atomic resolution over diffusive timescales
Abstract The Portevin-Le Chatelier (PLC) effect is a phenomenon by which plastic slip in
metallic materials becomes unstable, resulting in jerky flow and the onset of inhomogeneous …
metallic materials becomes unstable, resulting in jerky flow and the onset of inhomogeneous …
[HTML][HTML] Strategies for simultaneous strengthening and toughening via nanoscopic intracrystalline defects in a biogenic ceramic
While many organisms synthesize robust skeletal composites consisting of spatially discrete
organic and mineral (ceramic) phases, the intrinsic mechanical properties of the mineral …
organic and mineral (ceramic) phases, the intrinsic mechanical properties of the mineral …