25 Result(s)
within
English
Engineering
Metallic Materials
**g-wei Ma
Article
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Article
Catalysis of CuO on degradation of organic substance in Bayer liquid
In this study, catalytic wet oxidation technology was used to remove organic substances from Bayer liquid. First, under the optimal conditions without a catalyst (13.98 g/L of O2 addition, oxidation temperature o...
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Article
Preparation of coated sand for selective laser sintering and optimization of baking process of sand moulds
A cold method was used to prepare coated sand for application in the selective laser sintering (SLS) process. Tensile strength, loss on ignition, gas evolution, and accuracy of the SLS samples were tested and ...
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Article
A new multi-objective optimization model of multi-layer prestressed lining cavern for compressed air energy storage
Underground multi-layer cavern is a key component in the compressed air energy storage (CAES) engineering and its optimal design is of vital importance for improving the CAES efficiency, while most of the opti...
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Article
Intelligent back analysis using clonal selection algorithm in calculating equivalent top loading curve using O-cell test data
The bearing behaviour of larger-diameter piles significantly influences the performance of subway station construction using the pile foundation pile-beam-arch (PBA) approach. This paper proposes a numerical m...
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The influence of adding niobium and vanadium on hydrogen diffusion in 22MnB5 hot stam** steel
Adding alloying elements is always considered as an effective method to enhance the resistance against hydrogen embrittlement in steels. Nb and V were added into 22MnB5 hot stam** steel, and then their influ...
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Experimental investigation on mechanical behaviors and microstructure responses of the coking coal subjected to freeze-thaw cycles
In this paper, the uniaxial compression test of coking coal with different freeze-thaw (F-T) cycles was carried out, accompanied by the monitoring of the acoustic emission (AE) system and digital image correla...
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Effect of retained austenite on the fatigue performance of novel high carbon quenching-partitioning-tempering steel
The effect of retained austenite on the fatigue property of a novel Fe-0.65C-1.5Mn-1.5Si-0.6Cr-0.05Nb (wt.%) quenching-partitioning-tempering (Q-P-T) steel was investigated. X-ray diffraction, scanning electro...
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Article
Influence of process parameters and defect analysis in hot deep drawing process of aluminum alloy AA6082
In this study, a novel punch toolset was developed to investigate the hot stam** of AA6082-T4 sheet. The effect of the process parameters, including forming temperature, punching velocity, friction coefficie...
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Effect of heat treatments on Charpy impact properties of 15Cr12MoVWN ferritic/martensitic steel
The Charpy impact properties of 15Cr12MoVWN ferritic/martensitic steel for sodium-cooled reactors with variation in heat treatment factors and parameters are reported. The results show that the ductile-to-brit...
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Effect of deposition rate on microstructure and mechanical properties of wire arc additive manufacturing of Ti-6Al-4V components
Wire arc additive manufacturing (WAAM) is a novel manufacturing technique by which high strength metal components can be fabricated layer by layer using an electric arc as the heat source and metal wire as fee...
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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...
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Article
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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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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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
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
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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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 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
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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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...
