36 Result(s)
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Article
Cracking on a nickel-based superalloy fabricated by direct energy deposition
Cracks have consistently been a significant challenge limiting the development of additive manufactured nickel-based superalloys. It is essential to investigate the location of cracks and their forming mechani...
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Article
I-DCGAN and TOPSIS-IFP: A simulation generation model for radiographic flaw detection images in light alloy castings and an algorithm for quality evaluation of generated images
The intelligent detection technology driven by X-ray images and deep learning represents the forefront of advanced techniques and development trends in flaw detection and automated evaluation of light alloy ca...
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Article
Oxidation behavior of 4774DD1 Ni-based single-crystal superalloy at 980 °C in air
The oxidation behavior of a novel Ni-based single-crystal 4774DD1 superalloy for industrial gas turbine applications was investigated by the isothermal oxidation at 980 °C and discontinuous oxidation weight ga...
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Article
Feasibility of measuring moisture content of green sand by a low frequency multiprobe detector based on dielectric characteristics
Green sand is a mixture of silica sand, bentonite, water and coal powder, and other additives. Moisture content is an important index to characterize the properties of green sand. Based on the dielectric chara...
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Article
Effect of wide-spectrum pulsed magnetic field on grain refinement of pure aluminium
A wide-spectrum pulsed magnetic field (WSPMF) was obtained by adjusting the number of current pulses and the pulse interval between adjacent pulses. The effect of WSPMF on the grain refinement of pure aluminiu...
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Article
Microstructure evolution and precipitation behavior of Al-Mg-Si alloy during initial aging
The microstructure evolution and precipitation behavior of Al-Mg-Si alloy during initial aging were studied using hardness testing, conductivity testing, differential scanning calorimetry (DSC), and high resol...
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Article
Effect of HEA/Al composite interlayer on microstructure and mechanical property of Ti/Mg bimetal composite by solid-liquid compound casting
In this study, HEA/Al composite interlayer was used to fabricate Ti/Mg bimetal composites by solid-liquid compound casting process. The Al layer was prepared on the surface of TC4 alloy by hot dip**, and the...
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Article
Microstructure characteristics and mechanical properties of NbMoTiVWSix refractory high-entropy alloys
Refractory high-entropy alloys are considered as potential structural materials for elevated temperature applications. To obtain refractory high-entropy alloys with high strength, different amounts of Si were ...
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Article
Effects of Ag, Co, and Ge additions on microstructure and mechanical properties of Be-Al alloy fabricated by investment casting
The effects of Ag, Co, and Ge additions on microstructure and mechanical properties of Be-35Al (wt.%) alloys fabricated by investment casting were studied. The results reveal that the trace metals 1.5wt.% Ag, ...
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Article
Open AccessNumerical study of creep effect on purging plug performance under cyclic service
The service life of the purging plug is one of the fundamental factors that determine the downtime and usage efficiency of the whole ladle. The creep behaviour of the purging plug was thus investigated to iden...
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Article
Sub-pixel high precision dimensional measurement method for aero-engine hollow turbine blade based on industrial computed tomography image
Aero-engine hollow turbine blades are work under prolonged high temperature, requiring high dimensional accuracy. Blade profile and wall thickness are important parameters to ensure the comprehensive performan...
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Article
Gas evolution characteristics of three kinds of no-bake resin-bonded sands for foundry in production
No-bake resin-bonded sand is commonly used in casting production. However, its air pollution is relatively serious, especially in the molding and pouring process. For this reason, it is necessary to study the ...
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Article
Finite element simulation of real cavity closure in cast Ti6Al4V alloy during hot isostatic pressing
The healing behavior of shrinkage cavity inside the cast Ti6Al4V alloy during hot isostatic pressing (HIP) was investigated experimentally by interrupted hot isostatic pressing tests. The X-ray micro computed ...
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Article
Additive manufacturing and foundry innovation
Additive manufacturing is expected to transform and upgrade the traditional foundry industry to realize the integrated manufacturing and rapid and low-cost development of high-performance components with compl...
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Article
In situ monitoring methods for selective laser melting additive manufacturing process based on images — A review
Selective laser melting (SLM) has been widely used in the fields of aviation, aerospace and die manufacturing due to its ability to produce metal components with arbitrarily complex shapes. However, the instab...
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Article
Effect of melting rate on microsegregation and primary MC carbides in M2 high-speed steel during electroslag remelting
Large-size primary MC carbides can significantly reduce the performance of M2 high-speed steel. To better control the morphology and size of primary MC carbides, the effect of melting rate on microsegregation ...
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Article
Effect of alloying elements W, Ti, Sn on microstructure and mechanical properties of gray iron 220
Experiments were carried out to observe the variation in microstructure and mechanical properties of gray cast iron by adding pearlite promoting alloying elements such as Ti, Sn and W. Results show that adding...
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Article
Global heat transfer model and dynamic ray tracing algorithm for complex multiple turbine blades of Ni-based superalloys in directional solidification process
High-quality solidification microstructure during directional solidification relies on precise temperature gradient control, so accurate calculation of the temperature field is critical. In this study, a 3D tr...
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Article
Phase-field simulation of secondary dendrite growth in directional solidification of binary alloys
Phase field method was used to simulate the effect of grains orientation angle θ11 and azimuth θA of non-preferentially growing dendrites on the secondary dendrites of preferentially growing dendrites. In the sim...
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Article
Effects of trace Cr on as-cast microstructure and microstructural evolution of semi-solid isothermal heat treatment ZC61 magnesium alloy
The content and kind of trace elements in magnesium alloys have important effects on their ascast and semi-solid microstructures. In this research work, effects of trace Cr on as-cast and semi-solid microstruc...
