27 Result(s)
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Article
Jianfeng Gu
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Article
Attention-parallel multisource data fusion residual network-based open-circuit fault diagnosis of cascaded H-bridge inverters
Aiming to solve the problems of multiple internal power components, high fault probability, high similarity of the fault features of different power components, difficulty of traditional fault diagnosis featur...
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Article
Effect of Laser Hardening and Gas Nitriding on Wear Resistance of Steel P20: A Comparative Study
The effect of laser hardening and of gas nitriding on the microstructure and wear resistance of steel P20 (the Russian counterpart is 38KhNM) is studied. The phase composition and the microhardness of the hard...
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Article
Study on Axial Load Mechanical Behavior of Square Concrete-Filled Tubular Steel Stub Column with Gap
Square concrete-filled tubular steel stub column (SCFTSSC) is of great mechanical performance, which has been broadly used in the construction of engineering structures. For the purpose of avoiding the bucklin...
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Article
Fenpropathrin exposure induces neurotoxicity in zebrafish embryos
Fenpropathrin has been a commonly used insecticide to control agricultural and household insects over a few decades. Up to now, fenpropathrin residue in soil and water has been often determined due to its wide...
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Article
Phase Stability in High-Entropy Alloys: The Role of Configurational Entropy
High-entropy alloys (HEAs) have been attracted the attention of many researchers and have exhibited excellent performance due to their structures. Many researchers take the view that the unique structure of HE...
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Article
New alien and native Ektaphelenchid nematodes (Tylenchomorpha: Ektaphelenchinae) from China with details on host association and geographical distribution
Ektaphelenchids are entomophilic nematode species, commonly found in association with insects. In the present study, an alien and a native Chinese ektaphelenchid species were described based on integrative tax...
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Article
Effect of Initial Microstructure on Mechanical Properties of Pressure Vessel Steel after Intercritical Heat Treatment
The influence of the initial structure on formation of austenite, evolution of structure, and elevation of operating characteristics of steel SA508 Gr.3 (0.24% C, 1.40% Mn, 0.88% Ni, 0.54% Mo) after an intercr...
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Article
Analysis of Martensitic Transformation Plasticity Under Various Loadings in a Low-Carbon Steel: An Elastoplastic Phase Field Study
An elastoplastic phase field model for the martensitic transformation of a Fe-0.22C-1.58Mn-0.81Si (wt pct) alloy was developed, to investigate transformation plasticity in response to uniaxial, biaxial, shear ...
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Article
Effect of Cyclic Intercritical Tempering on the Microstructure and Mechanical Properties of a Low-Carbon Cu-Bearing 7Ni Steel
High strength and toughness are usually hard to obtain simultaneously because of the trade-off. In this research, cyclic intercritical tempering (IT) was applied to a low-carbon Cu-bearing 7Ni steel to pursue ...
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Article
Microstructure Formation and Tailoring of the Intermetallic TiAl Alloy Produced by Direct Laser Deposition
This study investigates the microstructure morphology in a single-track wall of Ti-47Al-2Cr-2Nb alloy produced by direct laser deposition. The as-deposited wall mainly exhibited an alternative-band microstruct...
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Article
Open AccessHigh-resolution Transmission Electron Microscopy Characterization of the Structure of Cu Precipitate in a Thermal-aged Multicomponent Steel
High-dispersed nanoscale Cu precipitates often contribute to extremely high strength due to precipitation hardening, and whereas usually lead to degraded toughness for especially ferritic steels. Hence, it is ...
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Article
The effect of preexisting VC carbides on the bainite transformation in medium-carbon high-alloy steel
Bainite transformation in steels is influenced by various factors. In the present work, bainite transformation in medium carbon high alloyed steel was investigated focusing on the influence of preexisting VC c...
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Article
A Novel Method to Calculate the Carbides Fraction from Dilatometric Measurements During Cooling in Hot-Work Tool Steel
Dilatometry is a useful technique to obtain experimental data concerning transformation. In this paper, a dilation conversional model was established to calculate carbides fraction in AISI H13 hot-work tool st...
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Article
Evaluation of Early Degradation and Corrosion Resistance of Modified Zinc Coating with \(\hbox {SiO}_{2}\) Nanoparticles
The electrochemical properties of zinc plate modified with different concentrations of nanoparticles in 3-(aminopropyl) triethoxysilane and 3-(trimethoxysilyl) propyl methacrylate solutions were investigated. ...
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Article
Compositional Variants of Cu-rich Precipitate in Thermally Aged Ferritic Steel
Atom probe tomography was utilized to investigate Cu precipitation in a high-strength low-alloy steel isothermally aged at 500 °C for 1, 4, 16, and 64 h after water-quenching from 900 °C. With prolonged aging ...
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Article
Open AccessBainite Transformation Characteristics of High-Si Hypereutectoid Bearing Steel
In this work, the bainite transformation characteristics of a high-Si hypereutectoid (1.3 wt.% Si, 1 wt.% C) bearing steel was analyzed by means of microstructural observation and dilatometric experiment. The ...
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Article
Semiconductor Property and Corrosion Behavior of Passive Film Formed on Steel with Zinc Coating in 5% NaCl Solution
The initial stage of corrosion behavior and the semiconductor property of a passive film formed on steel with zinc coating were investigated in 5 wt.% NaCl solution using scanning electrochemical microscopy (S...
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Article
Effect of Macrosegregation on the Microstructure and Mechanical Properties of a Pressure-Vessel Steel
Macrosegregation refers to the chemical segregation, which occurs quite commonly in the large forgings such as nuclear reactor pressure vessel. This work assesses the effect of macrosegregation and homogenizat...
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Article
Interactive formation of Cu-rich precipitate, reverted austenite, and alloyed carbide during partial austenite reversion treatment for high-strength low-alloy steel
We address the competitive precipitation and coprecipitation of three types of secondary phases, i.e., Cu-rich precipitates (CRPs), reverted austenite (RA), and alloyed carbide, in a high-strength low-alloy st...
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Article
Open AccessRapid, simple and direct detection of Meloidogyne hapla from infected root galls using loop-mediated isothermal amplification combined with FTA technology
The northern root-knot nematode (Meloidogyne hapla) is a damaging nematode that has caused serious economic losses worldwide. In the present study, a sensitive, simple and rapid method was developed for detection...
