Results 51 to 60 of about 2,862 (198)

Strain dependence of adiabatic shearing behaviors of CoCrFeNi high-entropy alloy fabricated via laser powder bed fusion under impact loads

Journal of Materials Research and Technology
Adiabatic shearing represents a prevalent mode of deformation failure in metals when subjected to impact loading. In this work, dynamic shearing interruption tests considering various shear displacements (i.e., shear strains) were conducted on of the ...
Lijin Dai, Yang Liu, Shengze Yang, Hongyu Chen, Shuxin Li, Yonggang Wang   +5 more
doaj   +1 more source

High strain rate deformation behavior, texture and microstructural evolution, characterization of adiabatic shear bands, and constitutive models in electron beam melted Ti-6Al-4V under dynamic compression loadings

Journal of Materials Research and Technology, 2022
The results of an investigation on the influence of strain rate on the microstructural and texture evolution, adiabatic shear band characterization, and deformation mechanism of electron beam melted Ti-6Al-4V vertically built cylindrical rods are ...
R. Alaghmandfard, P. Seraj, M. Sanjari, H. Pirgazi, C. Dharmendra, A.G. Odeshi, B. Shalchi Amirkhiz, M. Mohammadi   +7 more
doaj   +1 more source

A Comparison of Classical Constitutive Models for High‐Entropy Alloy Behavior: Effects of Medium Strain Rates and Temperature on Plastic Flow

Materials Genome Engineering Advances, EarlyView.
Four constitutive models are evaluated for FeCoNiCr and Al0.6FeCoNiCr HEAs under wide temperature and strain‐rate conditions. The predictive capabilities and limitations of each model are then critically assessed, with particular emphasis on strain rate sensitivity, temperature dependence, and physically unrealistic responses at extreme loading ...
Yooseob Song, Daniel Garcia‐Gonzalez, Tomasz Jankowiak, Alexis Rusinek   +3 more
wiley   +1 more source

Application of Non‐Isothermal Network Theory With Curved‐Channel Element Characteristics to Predict Melt Conveying in High‐Performance Single‐Screw Extruders

Journal of Polymer Science, EarlyView.
This study presents a fast and accurate calculation tool to predict conveying of polymer melts in single‐screw extruders. Integrating generalized sub‐models into network theory allows to represent the complex screw shapes and material behavior more realistically. Tests on an industrial extruder show close agreement with experiments, outperforming older
Daniel Herzog, Wolfgang Roland, Christian Marschik, Gerald Berger‐Weber   +3 more
wiley   +1 more source

Study on action mechanisms of alloy element for adiabatic shearing sensitivity

AIP Advances, 2019
The effect of specific alloy elements on adiabatic shearing sensitivity was studied by cutting experiment for the industrial pure titanium (TA2) and titanium alloy (Ti-6Al-4V) in the level of valence electron structure (VES).
Wentian Shi, Jinquan Li, Chenyu Wang
doaj   +1 more source

Synthesis and Characterization of an Azido Nitrofurazanyl Ether: An Energy‐Rich Heterocyclic Plasticizer With a Low Glass Transition Temperature

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT We report on the synthesis and characterization of 3‐(2‐(2‐azidoethoxy)ethoxy)‐4‐nitro‐1,2,5‐oxadiazole (NFPEG2N3), which is a liquid nitrofurazanyl ether that was designed to be an energy‐rich plasticizer for glycidyl azide polymer (GAP)‐ and nitrocellulose (NC)‐based formulations.
P. Lieber, A. Omlor, U. Schaller, T. M. Klapötke   +3 more
wiley   +1 more source

Numerical simulation and physical understanding of a locally initiated sea fog event over the eastern Yellow Sea with a transition of air–sea temperature difference

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Unexpected sea fog in the west coast of South Korea had a huge impact on the transportations in the Seoul–Incheon metropolitan area. We reproduced successfully the formation and evolution of a sea event with a transition of air–sea temperature difference using the Weather Research and Forecasting model.
Jeonghoe Kim, Jung‐Hoon Kim, Clive E. Dorman, Harindra J. S. Fernando   +3 more
wiley   +1 more source

Analytical solution for shear bands in cold-rolled 1018 steel

Journal of the Mechanical Behavior of Materials, 2012
Cold-rolled 1018 (CR-1018) carbon steel has been well known for its susceptibility to adiabatic shear banding under dynamic loadings. Analysis of these localizations highly depends on the selection of the constitutive model.
Voyiadjis George Z., Almasri Amin H., Faghihi Danial, Palazotto Anthony N.   +3 more
doaj   +1 more source

The role of the synoptic‐scale conditions in driving fog and mist during the FATIMA July 2022 Sable Island Field program

Quarterly Journal of the Royal Meteorological Society, EarlyView.
ERA5 hourly 325‐m and 1512‐m (a) convergence and (b) vertical motion (actually pressure change with sign reversed to compare with convergence) over Sable Island around the time of an event. The mist (green) and fog (red) occurrences at the surface station are shown at the bottom of the figures. A 325‐m fitted line convergence was positive for the first
Clive E. Dorman, Darko Koračin, Reneta Dimitrova, Ismail Gultepe, Sebastian W. Hoch, Jesus Ruiz‐Plancarte, Qing Wang, Alexei Perelet, H. J. S. Fernando   +8 more
wiley   +1 more source

Evolution of adiabatic shear band in 2000 MPa grade ultrahigh strength steel during high strain rate compression

Journal of Materials Research and Technology
In this work, we employ a Split Hopkinson Pressure Bar (SHPB) to investigate the microstructural evolution and formation mechanism of internal adiabatic shear bands (ASBs) in a 2000 MPa grade ultrahigh strength martensitic steel at high strain rates ...
Ruizhe Jin, Jiahao Zhu, Wenchao Yu, Yongming Yan, Jie Shi, Maoqiu Wang   +5 more
doaj   +1 more source