Results 1 to 10 of about 1,083,765 (117)

Activation Volume and Energy for Dislocation Nucleation in Multi-Principal Element Alloys

open access: yesMetals, 2019
Incipient plasticity in multi-principal element alloys, CoCrNi, CoCrFeMnNi, and Al0.1CoCrFeNi was evaluated by nano-indentation and compared with pure Ni. The tests were performed at a loading rate of 70 μN/s in the temperature range of 298 K to 473
Sanghita Mridha   +2 more
doaj   +3 more sources

Transition-State Compressibility and Activation Volume of Transient Protein Conformational Fluctuations [PDF]

open access: yesJACS Au, 2021
Matthias Dreydoppel   +4 more
doaj   +2 more sources

Microstructure and Deformation of Over-Aged Al-Zn-Mg-Cu Alloy with Fine Grains during Multiple Stress Relaxation Tests

open access: yesMetals, 2022
Strong obstacles can greatly impede the motion or transmission of dislocations, which can be reflected by strain rate sensitivity and activation volume. In this study, the strain rate sensitivity and activation volume of overaged Al-Zn-Mg-Cu alloys with ...
Peng Rong   +7 more
doaj   +1 more source

The Effect of Strain Rate on the Deformation Processes of NC Gold with Small Grain Size

open access: yesCrystals, 2020
The strength of nanocrystalline (NC) metal has been found to be sensitive to strain rate. Here, by molecular dynamics simulation, we explore the strain rate effects on apparent Young’s modulus, flow stress and grain growth of NC gold with small size. The
Jialin Liu   +4 more
doaj   +1 more source

High-Temperature Nano-Indentation Creep Behavior of Multi-Principal Element Alloys under Static and Dynamic Loads

open access: yesMetals, 2020
Creep is a serious concern reducing the efficiency and service life of components in various structural applications. Multi-principal element alloys are attractive as a new generation of structural materials due to their desirable elevated temperature ...
Maryam Sadeghilaridjani   +1 more
doaj   +1 more source

Stoney vs. Histed: Quantifying the spatial effects of intracortical microstimulation

open access: yesBrain Stimulation, 2022
Background: Intracortical microstimulation (ICMS) is used to map neural circuits and restore lost sensory modalities such as vision, hearing, and somatosensation.
Karthik Kumaravelu   +4 more
doaj   +1 more source

On the Size Effect of Strain Rate Sensitivity and Activation Volume for Face-Centered Cubic Materials: A Scaling Law

open access: yesCrystals, 2020
In a recent experimental study of indentation creep, the strain rate sensitivity (SRS) and activation volume v* have been noticed to be dependent on the indentation depth or loading force for face-centered cubic materials.
Xiazi Xiao, Hao Liu, Long Yu
doaj   +1 more source

Stress relaxation behavior of low carbon steel at different temperatures

open access: yesMaterials Research Express, 2023
In this paper, the stress relaxation behavior of Q235 with the initial tensile stress of 70, 85 and 100 MPa were investigated at different temperature. Based on the thermal activation theory, the stress relaxation model of Q235 steel was established, and
Shanchao Zuo   +6 more
doaj   +1 more source

Experimental study on effect of oxygen volume fraction on spontaneous combustion characteristics of coal

open access: yesMeikuang Anquan, 2023
In order to study the effect of oxygen volume fraction on the spontaneous combustion of coal oxidation at low temperature, the non-adhering coal from a mine in Inner Mongolia was taken as the research object.
DING Xuqin, ZHANG Leilin
doaj   +1 more source

Flow Stress of bcc Metals over a Wide Range of Temperature and Strain Rates

open access: yesMetals, 2020
A physical-based model for the flow stress of bcc metals is presented. Here, thermally activated and viscous drag regimes are considered. For the thermally activated component of the flow stress, the diffusion-controlled regime at elevated temperature is
Gabriel Testa   +3 more
doaj   +1 more source

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