In-depth understanding of corrosion behaviour is a key aspect regarding the application additively manufactured parts. In this study, 316L stainless steel was under different scanning strategies using selective laser melting (SLM). Microstructure characterization and electrochemical tests in NaCl aqueous solution (3.5 wt%), including open circuit potential (OCP), potentiodynamic polarization, impedance spectroscopy (EIS), were conducted to study influence on behaviour. The microstructure...

The mechanism of solidification cracking in a laser-remelted bead plasma-sprayed CoCrFeMnNi high-entropy alloy coating was revealed. oriented dendrite growth and phase distribution the remelted were characterized by electron backscatter diffraction, which indicated that center this local site consisted parallel columnar grains. A face-centered cubic (FCC) body-centered (BCC) existed fusion zone. Under shrinkage, dendrites detached from each other, yielded necessary strain factor to generate...

Abstract Durability and corrosion behavior of refractory lining, a core part commercial water‐coal slurry gasifier, largely determine its gas yield rate carbon conversion rate. In this work, high chromite‐containing served for 4200 hours in gasifier was studied, the role generated stress cracks on degradation elucidated. The results demonstrated that depth penetration under assistance up to 2.60 cm, which much deeper than case free from crack. sub‐surface, accompanied by cracking, provided...

Abstract The Al-11.0Mg-2.6Si-4.0Zn-0.6Mn (wt%) alloy is a new developed high strength die cast which can be used for structural parts in the automotive and aerospace industry. In this study, effect of various amount Ti on microstructure evolution mechanical properties under as-cast T6 heat treatment conditions are investigated. addition results formation Al 3 intermetallic phase, volume fraction forming temperature increases with increase titanium content. With 0.1wt% addition, best alloy....

Ni - W alloy coating is a kind of promising environmental friendly to substitute for hard chrome plating, its excellent functional properties. Their properties depend mainly on the structure and defect, such as cracks. The crack catastrophe both physical chemical crystalline state also affect their application. In this work, nanocrystalline nickel tungsten (nc ) coating, amorphous (a (c were prepared under ultrasonic direct current (UDC) electroplating. aim present study achieve control high...

Abstract In this paper, the electrochemical mechanism and regularity of corrosion steel bars in seawater sea-sand concrete under different chloride ion erosion styles are studied. Electrochemical impedance spectroscopy (EIS) was used to electrochemically test (SSC). By means analyzing AC spectra specimens two conditions, conclusions can be gotten that EIS diagram bar rust state, added capacitance arc medium frequency range is related pitting surface; The carried by aggregate water decreased...

The umbilical is one of the most important components a subsea production system. Processing errors and environmental load deviations may occur during manufacturing process, deterministic design based on safety factors often unable to meet needs engineering. In present paper, random distribution law geometry parameters considered analyse reliability under ultimate tensile by combining response surface approach analysis with finite element analysis.

Abstract Long-lasting metallic materials are key to enabling a robust and reliable molten carbonate electrolyzer. In this paper, the corrosion behaviors of SS310 IN718 in Li 2 CO 3 -K -Na under -O atmosphere were systematically studied. The results show that had lower rate than because higher Ni concentration. addition, increasing temperature decreasing oxygen concentration can reduce both IN718. As result, is suitable material be used salt electrolyzers. Overall, engineering alloy...

Actual model of cubic hinge sleeve was established in Ansys. Strength calculated under high pressure load realistic condition, which is based on practical processing, results values von Mises stress were obtained. It provides a theoretical basis for optimization and reliability design sleeve.

Diamond wire saws are widely used in slicing various kinds of hard and brittle materials, such as silicon, sapphire, etc. Electroplated diamond tools for high-efficiency process, because high abrasion resistance. However, low production efficiency causes cost the electroplating rate is low. To solve problems, a drum-type manufacturing method electroplated was developed this study. Multiple could be manufactured simultaneously at speed one machine. The mechanism drum type unit introduced,...

The research about effects of Nb on martensite size and mechanics in B-bearing steel was completed. results show that both steels have similar due to high hardenability B element which is responsible for mechanical properties. However, there are differences the microstructures between A (Nb-containing steel) (Ti-containing steel). Microstructural observation quenched specimen shows formation fine dominant Steel than element. Martensite refined by fatigue property toughness.

Split Hopkinson pressure bar setup was used as experimental method for dynamic impacted testing at 573K the strain rate of 7030s-1. The microstructure Al-5.8Cu aluminum alloy plate characterized by transmission electron microscopy (TEM). findings indicated that dislocation network Al matrix observed, which attributed to isothermal and adiabatic process during impaction. researched results inhabited coarsened precipitate in plate.

Carbon fiber reinforced plastic (CFRP), which is composed of carbon fibers in a resin matrix, an extremely strong and light composite material that has found use the aerospace automotive industries. CFRP boards are very difficult to machine using common machining processes. Various artifacts, such as burrs delamination, occur frequently when CFRP. Adequate techniques for have not yet been established. Recently, electroplated diamond wire technology cutting hard, brittle materials silicon...

Industrial equipment is going to take a turn for the higher parameter and larger scale.It raise taller requirement reliability of sealing structure.So, new structure has been paid more attention in practice.In this paper, ABAQUS was utilized calculate performance novel standard double wedge angle ring gasket joint under bending moment.The smaller than one.The calculation results were compared with series moments.The illustrated that same moment, stress distribution on surface uniformly...