48 Result(s)
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Article
**g-wei Ma
Metallic Materials
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Article
Nonlinear boundary slip of fluid flowing over solid surface
A general nonlinear slip of fluid flow at a solid surface is proposed in the present paper. The theoretical prediction shows that the slip length keeps as a constant (an initial slip length) at a small shear r...
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Article
Measuring system of high polymers’ pyromagnetic effect
The measurement system is the main equipment of the project. Based on the characteristic of experiment system, a sensor array is designed, and used to continually acquire the global magnetic field. A scientifi...
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Article
Thermomechanical coupling effect of PVC sheet with defects
Thermomechanical coupling of PVC sheet with defects under uniaxial loading at different rates and different sizes of microbores was studied. The local temperature field of the dynamic damage-rupture process zo...
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Composition design and properties of CoNbZr amorphous films deposited by unbalanced magnetron sputtering
Co87Nb10Zr3, Co76Nb19Zr5, Co64Nb26Zr10 and Co64Nb16Zr20 amorphous films were deposited on noncrystalline glass substrates by DC unbalanced magnetron sputtering. The compositions of amorphous films were tailored i...
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Article
Effect of Cryogenic Treatment on Properties of Cr8-Type Cold Work Die Steel
The effect of cryogenic treatment on the properties of Cr8-type cold work die steel was investigated. The results show that cryogenic treatment increases hardness by decreasing retained austenite, but the degr...
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Article
Modifying agent selection for Al-7Si alloy by Miedema model
To determine the modifying agents for Al-7Si alloys, microstructure observation and mixing enthalpy analysis using Miedema model for Al-7Si alloy with additions of different rare earth elements were performed,...
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Article
Pyrolysis characteristics of rubber compositions in medical waste
Thermogravimetric study of rubber compositions (operating glove and catheter) in medical waste was carried out using the thermogravimetric analyser (TGA), at the heating rate of 20 °C/min in a stream of N2. The r...
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Article
Impact of permafrost degradation on embankment deformation of Qinghai-Tibet Highway in permafrost regions
Based on long-term monitoring data, the relationships between permafrost degradation and embankment deformation are analyzed along the Qinghai-Tibet Highway (QTH). Due to heat absorbing effect of asphalt pavem...
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Article
Effects of zinc on static and dynamic mechanical properties of copper-zinc alloy
The effects of adding alloy element zinc on the static and dynamic mechanical properties of copper-zinc alloy were investigated. Tensile and low cycle fatigue behaviors of the C11000 copper and H63 copper-zinc...
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Article
Computational analysis of linear friction welding process and micromechanical modeling of deformation behavior for medium carbon steel
Finite element simulation of linear friction welding (LFW) medium carbon steel was carried out using the ABAQUS software. A two-dimensional (2D) coupled thermo-mechanical model was established. First, the temp...
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Article
Effects of temperature and strain rate on flow behavior and microstructural evolution of super duplex stainless steel under hot deformation
Hot compression tests were carried out in the temperature range of 1223—1473 K and strain rate range of 0.01—30 s–1 to investigate the flow behavior and microstructural evolution of super duplex stainless steel 2...
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Article
Open AccessMechanism of Calcium Fluoride Acceleration for Vacuum Carbothermic Reduction of Magnesia
The use of a small amount of calcium fluoride as an additive greatly accelerated the reduction of magnesia during the preparation of magnesium from magnesia using the vacuum carbothermic reduction method. At 1...
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Open AccessReduction behavior and kinetics of vanadium–titanium sinters under high potential oxygen enriched pulverized coal injection
In this work, the reduction behavior of vanadium–titanium sinters was studied under five different sets of conditions of pulverized coal injection with oxygen enrichment. The modified random pore model was est...
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Open AccessIn situ reaction mechanism of MgAlON in Al–Al2O3–MgO composites at 1700°C under flowing N2
The Al–Al2O3–MgO composites with added aluminum contents of approximately 0wt%, 5wt%, and 10wt%, named as M1, M2, and M3, respectively, were prepared at 1700°C for 5 h under a flowing N2 atmosphere using the reac...
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Article
Preparation and optoelectronic properties of a-IGZO thin films deposited by RF magnetron sputtering at different working pressures
Transparent oxide semiconductor, a-IGZO, thin films were prepared by high-vacuum RF magnetron sputtering at different working pressures. The effect of working pressure on crystal structure, surface morphology,...
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Article
Electrochemical oxidation of reactive brilliant orange X-GN dye on boron-doped diamond anode
In this study, the electrochemical oxidation of reactive brilliant orange X-GN dye with a boron-doped diamond (BDD) anode was investigated. The BDD electrodes were deposited on the niobium (Nb) substrates by t...
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Article
NO adsorption and temperature programmed desorption on K2CO3 modified activated carbons
Fuel cell stacks as the automotive power source can be severely poisoned by a trace amount of NOx in atmosphere, which makes it necessary to provide clean air for fuel cell vehicles. In this work, activating comm...
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Article
Microstructure and mechanical properties of dissimilar pinless friction stir spot welded 2A12 aluminum alloy and TC4 titanium alloy joints
The microstructure and mechanical properties of dissimilar pinless friction stir spot welded joint of 2A12 aluminum alloy and TC4 titanium alloy were evaluated. The results show that the joint of Al/Ti dissimi...
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SOC estimation based on data driven exteaded Kalman filter algorithm for power battery of electric vehicle and plug-in electric vehicle
State of charge (SOC) estimation has always been a hot topic in the field of both power battery and new energy vehicle (electric vehicle (EV), plug-in electric vehicle (PHEV) and so on). In this work, aiming a...
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Article
Microstructural evaluation and mechanical properties of 7075 aluminum alloy prepared by controlled diffusion solidification
In the present work, 7075 aluminum alloy (Al-Zn-Mg-Cu) was produced by both conventional casting (CC) and controlled diffusion solidification (CDS) methods. Each sample was subjected to different heat-treatmen...
