24 Result(s)
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Article
Fabrication of silica-based ceramic cores with internal lattice structures by stereolithography
Ceramic cores are widely used in investment casting, and ideal properties of cores are essential for high-quality castings. Under the circumstances requiring thick cores, solid cores are likely to encounter de...
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Article
Application of transparent casting moulds prepared by additive manufacturing technology in hydraulic simulation
Hydraulic simulation is one of the critical methods to research the filling mechanism of molten metal in the casting process. However, it only performs on test pieces with relatively simple structures due to t...
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Article
Effect of electromagnetic parameters on melt flow and heat transfer of AZ80 Mg alloy during differential phase electromagnetic DC casting based on numerical simulation
Based on multi-physical field coupling numerical simulation method, magnetic field distribution, melt flow, and heat transfer behavior of a Φ300 mm AZ80 alloy billet during differential phase electromagnetic DC c...
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Article
Structure and electrochemical characteristics of Mg–Ti–Ni-based electrode alloys synthesized by mechanical milling
The vacuum induction melting was adopted to fabricating Mg50−xTixNi45Al3Co2 (x = 0, 1, 2, 3, 4 at.%) composites protected by the high-purity helium atmosphere. Subsequently, the surface modification treatment of ...
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Article
Tailoring microstructure evolution and mechanical properties of a high-performance alloy steel through controlled thermal cycles of a direct laser depositing process
Direct laser deposition (DLD), as a popular metal additive manufacturing process, shows advantages of technical flexibility and high efficiency to gain a high-performance alloy steel component. However, during...
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Article
Longitudinal profiled plate straightening process based on curvature integral method
Considering the variable cross section thickness of longitudinal profiled plate and the dynamic reductions of straightening rolls, an analytical model combining curvature integral method with linear decreasing...
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Article
Effects of PbO poisoning on Ce–Mn/AC catalyst for low-temperature selective catalytic reduction of NO with NH3
As a common heavy metal in the sintering flue gas, Pb can exist in the form of oxide (PbO) and lead to the decrease in the denitration catalysts activity. Ce–Mn/AC (activated carbon) and PbO–Ce–Mn/AC catalysts...
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Article
Carbides precipitation and their evolution of Cr15Co10Mo5-alloyed heat-resistant bearing steel after tempering at different temperatures
The carbides precipitation and their evolution at elevated tempering temperature in Cr15Co10Mo5-alloyed heat-resistant bearing steel were investigated by means of the transmission electron microscope. The resu...
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Article
Effect of Al on microstructure and mechanical properties of cast CrCoNi medium-entropy alloy
Cast CrCoNiAlx (x=0–1.2) medium-entropy alloys (MEAs) were produced by arc melting and flip cast to investigate the alloying effect of Al addition on the microstructure, phase constituent and mechanical propertie...
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Article
Effect of SiO2 concentration in silica sol on interface reaction during titanium alloy investment casting
Using silica sol as a binder for titanium investment casting is very attractive due to its good stability and reasonable cost as compared with yttrium sol and zirconium sol. However, the mechanism of interface...
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Article
Estimation of maximum inclusion by statistics of extreme values method in bearing steel
A statistic method, statistics of extreme values (SEV), was described in detail, which can estimate the size of maximum inclusion in steel. The characteristic size of the maximum inclusion in a high clean bear...
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Article
Effect of Cyclic Annealing on Microstructure and Mechanical Properties of Medium Carbon Steel
The microstructure and mechanical properties of medium carbon steel after cyclic heat treatment were investigated. The effects of cyclic numbers and long time annealing on the microstructure and mechanical pro...
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Article
Formation of Hearth Sediment during Vanadium Titano-magnetite Smelting in Blast Furnace No.7 of Chengde Iron and Steel Company
The large quantity of sediment produced in the hearth during vanadium titano-magnetite smelting in a blast furnace (BF) affects the stability of the blast furnace operation. Testing and analysis of the sedimen...
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Article
Progress in the research and manufacture of GH4169 alloy
GH4169 alloy has been widely used in fields such as aviation, aerospace, and petrochemical, because of its excellent combination of mechanical and processing properties. These properties include good high-temp...
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Article
Phosphorus capacity of CaO-SiO2-Al2O3-MgO-FexO slag
The CaO-SiO2-Al2O3-MgO-Fex O slag occurs in the production process of Corex ironmaking technology. Most of its metallurgical properties, especially the phosphorus property, are different from the slag produced fr...
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Article
Computational Insights into Interactions between Ca Species and α-Fe2O3(0 0 1)
CaCl2 can be sprayed onto sinter surface, which can improve the low temperature reduction degradation index (RDI+3.15) of sinter. This has been recognized; however, there are various opinions on the inhibition me...
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Article
Mechanical Properties of Steels Treated by Q-P-T Process Incorporating Carbide-free-bainite/martenite Mutiphase Microstructure
Quenching-parttioning-tempering (Q-P-T) process were applied to a quenched carbid-free bainite/martensite CFB/M) multiphase steel 40Mn2Si2Cr and its effect on the mechanical properties was studied. The results...
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Article
Life Prediction of Newly Developed Ferritic Stainless Steels for Automotive Muffler
Corrosion mechanism of automotive mufflers was investigated by SEM (scanning electron microscope) and XRD (X-ray diffractomer) analysis. 409L and newly developed 439M steels were evaluated in terms of condensa...
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Article
Optimization Evaluation Test of Strength and Toughness Parameters for Hot-Stamped High Strength Steels
Use of hot-stamped high strength steels (HSHSS) not only reduces the vehicle weight, but also improves the crash safety, therefore more and more mentioned steels are used to produce automobile parts. However, ...
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Article
Effects of Microwave Heating on Pore Fractal Properties of Blast Furnace Sludge
Effects of microwave heating on the pore fractal properties of blast furnace sludge (BFS) and relative mechanism were studied. The results show that the morphology features of iron bearing sinter and coke part...
