93 Result(s)
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**ng Yongchang
Characterization and Evaluation of Materials
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Article
Recent advances and perspectives in MXene-based cathodes for aqueous zinc-ion batteries
Aqueous zinc-ion batteries (AZIBs) show great potential for applications in grid-scale energy storage, given their intrinsic safety, cost effectiveness, environmental friendliness, and impressive electrochemic...
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Article
High-Temperature Fatigue Behavior of Inertia Friction Welded Joints of GH4065A Ni-Based Superalloy
In this work, the novel Ni-based superalloy GH4065A inertia friction welding (IFW) joints were subjected to the post-welding heat treatments (PWHT) at 730 ℃ for 5 h or 760 ℃ for 5 h, and the differences in mic...
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Article
Improving Tensile Properties of Dissimilar TLP Bonding Joints of IN718 Nickel-Based Superalloy/316LN Austenitic Steel by Long-Term Post-bonded Homogenization Treatment
The presence of boride precipitates has a detrimental impact on the mechanical properties of TLP bonding joints. This study investigated the effectiveness of the long-term post-bonded homogenization treatment ...
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Article
Improving creep strength of the fine-grained heat-affected zone of novel 9Cr martensitic heat-resistant steel via modified thermo-mechanical treatment
The infamous type IV failure within the fine-grained heat-affected zone (FGHAZ) in G115 steel weldments seriously threatens the safe operation of ultra-supercritical (USC) power plants. In this work, the tradi...
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Article
Synergistic effect of Gd and Sr on the microstructure and mechanical properties of Al–Si–Mg alloy
Al–Si–Mg alloys have received widespread application in communication, transportation and other fields on account of their attractive properties, e.g. superior castability, high ductility and excellent corrosi...
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Article
Study on Fire Resistance of Prefabricated Demountable Composite Beams Using Bolted Shear Connectors
Using bolts as shear connectors of the steel–concrete composite beams enables prefabricated assembly and makes it possible to demountable and reuse the prefabricated components. However, studies on the fire re...
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Article
Microstructure Evolution of Athermal Solidification Zone and Its Effect on Mechanical Properties in Dissimilar Transient Liquid Phase Bonded Joint of IN718 Ni-Based Alloy/316LN Steel
Transient liquid phase (TLP) bonding of IN718 Ni-based alloy and 316LN steel was carried out using BNi-2 alloy foil at 1050 °C for diverse bonding time. The formation process of intermetallics in the athermal ...
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Article
Achieving High Strength and High Electrical Conductivity of Additive Manufactured CuCrZr Alloys: The Role of the Post-Heat Treatments on Microstructure and Properties
In this work, two different types of post-heat treatment processes were developed for additively manufactured CuCrZr alloy. The effect of post-heat treatment on the microstructure and properties of as-built Cu...
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Article
Effect of water vapor on the oxidation behavior of Al2Zr alloys
To reveal the effects of water vapor on the oxidation mechanism of Al–Zr-based materials, the Al2Zr alloy was oxidized in a wet atmosphere. Water vapor achieves the synchronous oxidation of Al and Zr to form amor...
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Article
High-Efficiency Tandem OLED with Multiple Buffer Layers to Enhance Electron Injection and Transmission
Building on the C60/CuPc organic photovoltaic (OPV) heterojunction, in this work we have incorporated Al and NPB: F4-TCNQ as charge buffer layers. The performance of the device is significantly enhanced by improv...
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Article
Prediction of M–A Constituents and Impact Toughness in Stir Zone of X80 Pipeline Steel Friction Stir Welds
This study explored a strategy for predicting the proportion of martensite–austenite (M–A) constituents and impact toughness of stir zone (SZ) on X80 pipeline steel joints welded by friction stir welding (FSW)...
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Article
Highly sensitive and fast response acetone gas sensor based on Co3O4–ZnO heterojunction assembled by porous nanoflowers
Acetone is an important raw material for organic synthesis in modern industrial production. However, working in an environment with large acetone concentrations can cause explosive accidents in addition to irr...
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Article
Precipitates evolution and strengthening of Al–Mg2Si alloys containing high-Cu contents during ageing process
Precipitation evolution and strengthening effect of Al-15wt%Mg2Si-5wt%Cu alloy were studied by characterizing the change of morphology and tensile properties after ageing at 200 °C for various times. At the under...
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Article
Hot Deformation Behavior of ATI 718Plus Alloy with Different Microstructures
In this work, the effect of microstructure on hot deformation behavior of ATI 718Plus (hereinafter refers to 718Plus) alloy was studied by isothermal compression test. The results showed that when the strain r...
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Article
Modification Mechanism and Uniaxial Fatigue Performances of A356.2 Alloy Treated by Al-Sr-La Composite Refinement-Modification Agent
Modification mechanism and uniaxial fatigue properties of A356.2 alloy treated by Al-6Sr-7La and traditional Al-5Ti-1B/Al-10Sr (hereinafter refers to traditional treated alloy) were investigated by constant st...
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Article
Hot Deformation Behavior and Recrystallization Mechanism in an As-Cast CoNi-Based Superalloy
The hot deformation behavior of as-cast CoNi-based superalloy was investigated by means of hot compression tests. The corresponding microstructure evolution after hot deformation was examined by optical micros...
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Article
Effect of microstructure on temperature dependence of deformation behavior in polycrystalline CoNi-based superalloy
The initial microstructures with the unimodal and bimodal size distribution of γ′ precipitates (referred to as UD and BD, respectively) in CoNi-based superalloy are obtained utilizing different heat treatment reg...
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Article
Effect of Co-do** on the performance of nanosheet-like ZnO ethanol gas sensor
In this paper, a hydrothermal method was applied to synthesize the nanosheet-like pure ZnO and 0.5%, 1 and 3% Co-doped ZnO (Co-ZnO). The pristine and Co-doped ZnO flower-like particles were assembled by porous...
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Article
Research on a Traceability Process of Sand Core Information by Printing QR Code on Sand Core Surface in the Casting Production Process
The quality of the sand core directly affects the quality of the casting during the casting process. The establishment of an information link between the sand core and the casting can realize the traceability ...
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Article
Microstructure and Tensile Strength of the Bonded Interfaces and Parent Materials in W/ODS Steel Joints Fabricated by Direct SSDB
In the present work, Tungsten (W)/oxide dispersion strengthened (ODS) steel joints were fabricated by the direct solid state diffusion bonding (SSDB) technology with a multistage cooling process, and the micro...
