268 Result(s)
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Article
Elimination of cracks in stainless steel casings via 3D printed sand molds with an internal topology structure
The important supporting component in a gas turbine is the casing, which has the characteristics of large size, complex structure, and thin wall. In the context of existing 3DP sand casting processes, casting ...
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Article
Effect of microalloying on wettability and interface characteristics of Zr-based bulk metallic glasses with W substrate
The infiltration casting method is widely employed for the preparation of ex-situ composite materials. However, the production of composite materials using this method must necessitates a comprehensive underst...
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Article
Role of inclination angle on columnar-to-equiaxed transition in the eutectic Al-5Mg-2Si alloy fabricated by laser powder bed fusion
In this study, the effect of inclination angles relative to the building direction in the additively manufactured eutectic Al-5Mg-2Si alloy was investigated through the laser powder bed fusion (LPBF). The micr...
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Article
New electromagnetic variable flow device for slab continuous casting mold: mechanical design and magnetic field analysis
Obtaining a reasonable mold flow field for casting slabs with different sections is challenging by solely modifying the nozzle structure and continuous casting process. Research was conducted on small-sectione...
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Article
Interfacial behaviors between ZG13Cr9Mo1VNbN stainless steel and chromite sand
To elucidate the formation mechanisms of burn-on sand and metal penetration during sand casting, some laboratory experiments were carried out at different temperatures (1813, 1833, 1853, and 1873 K) and holdin...
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Article
Effect of initial microstructure on microstructure evolution and mechanical properties of 0.12C martensitic steels during quenching and tempering
The microstructure evolution and mechanical properties of a Fe–0.12C–0.2Si–1.6Mn–0.3Cr–0.0025B (wt.%) steel with different initial microstructures, i.e., hot rolled (HR) and cold rolled–annealed (CRA), were st...
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Article
Preparation and properties of ZrO2-strengthened porous mullite insulation materials using Y2O3 additive
ZrO2-strengthened porous mullite insulation materials were prepared by foaming technology utilizing ZrSiO4 and Al2O3 as primary materials and Y2O3 as an additive. The effects of Y2O3 contents on the phase composi...
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Article
Efficient Separation of Iron and Alumina in Red Mud Using Reduction Roasting and Magnetic Separation
Gibbsite-type bauxite is the main material for alumina extraction by Bayer process globally, while the iron in red mud is difficult to use for the high alumina content. Therefore, the efficient separation of i...
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Article
Effect of silica on crystallization process of calcium ferrite: thermodynamic and kinetic analysis
SiO2 is the main component of gangue in sinters and a crucial constituent in the formation of the SiO2–Fe2O3–CaO (SFC) system. The non-isothermal crystallization kinetics of the SFC system were investigated using...
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Article
Magnesium-containing pellet regulating blast furnace ferrous burden interaction: softening–melting behavior and mechanism
MgO participates in all stages of sintering, pelletizing, and blast furnace ironmaking, and synergistically optimizing the distribution of MgO in ferrous burden can effectively enhance the interaction within t...
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Article
Mechanism development of strength contributed by CPB with rice husk ash
Rice husk ash (RHA) is currently utilized as a supplementary cementitious material in cement products due to its pozzolanic properties. This study aims to investigate the pozzolanic effect (PE) and filler effe...
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Article
Synthesis of foamed geopolymers by substituting fly ash with tailing slurry for the highly efficient removal of heavy metal contaminants: Behavioral and mechanistic studies
This study aimed to synthesize porous geopolymers from tailing slurry, a byproduct of bauxite mining, for use as potential materials for groundwater remediation. The effects of various factors, such as foaming...
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Article
Coal fly ash resource utilization: Effects of inorganic minerals amendments on CFA-originated opal/sand aggregates formation
Opal (amorphous silica, SiO2·nH2O), a solid waste byproduct of the alkaline extracting alumina from coal fly ash, exhibits strong adsorption properties and is a secondary/clay mineral in the soil. Combining opal ...
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Article
Effect of rare earth on primary carbides in H13 die steel and their addition method: a review
Larger-sized primary carbides lead to stress concentration during the application of H13 hot-work die steel, resulting in microcracks and fatigue failure. Rare earth was usually added to modify the carbides an...
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Article
Effect of Mo and cold forging deformation on strength and ductility of cobalt-based alloy L605
Mo element was added to cobalt-based alloy L605, and cold forging deformation was performed. The effects of the addition and cold forging deformation on the microstructure and mechanical properties of the allo...
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Article
The identification method for rock strength and joint while drilling based on cutting energy density
Rock strength and joint parameters are the basic parameters reflecting engineering rock quality. The traditional rock strength testing method requires taking cores from the surrounding rock on site and transpo...
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Article
Roof control mechanism and partition compensation support technology of gob-side entry formed by N00 mining method in thin coal seam
To achieve scientific and accurate support for the roadway roof in the N00 mining method for thin coal seams, the roof-cutting self-forming roadway is divided into two stages: the advanced chamber stage (Stage...
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Article
Mechanism of high-energy pulsed current-assisted rolling of 08AL carbon steel ultra-thin strip
To improve the plastic deformation performance of a 08AL carbon steel ultra-thin strip, a pulsed electric field was integrated into the plastic processing of the ultra-thin strip, and the effects of high-energ...
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Article
Characteristics and stability of oxide + carbonitride in H13 steel at 1250 °C
The morphology, size, quantity, and composition of complex oxide + carbonitride in H13 steel held at 1250 °C for 5, 10, and 15 h were determined. The results show that the ratio and number of complex carbonitr...
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Article
Strength and failure characteristics of coal measures mudstone specimens containing a prefabricated flaw under true triaxial tests
In this study, a series of coal measures mudstone specimens containing a prefabricated flaw were subjected to true triaxial test (TTT), namely, specimens of the intermediate principal stress (σ2) parallel to pref...
