Materials Literature
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In this study, SEM and Köhlhoff etching were employed to follow the rolling texture and microstructure development in 93/7 brass that had been homogeneously cold rolled to different plastic strains. Correlated with FEM to rolling process, the effect of strain field on rolling texture and microstructure development in…
Several compounds with Aurivillius-type structure in the Bi4Ti3O12-BiFeO3 system with the general formula Bim+1Fem–3Ti3O3m+3 showing multiferroic properties arouse an increasing interest due to their wide potential applications in electronics. The powders composed of the Aurivillius phase with m=5, 7 and 9 were succes…
The formation of porosity in 40mmx200mmx100mm ductile cast iron test block under different conditions of mold dilation and graphite precipitation has been investigated based on The formation of porosity in 40mmx200mmx100mm ductile cast iron test block under different conditions of mold dilation and graphite precipitat…
Silicon steels and ferrites dominate soft magnetic materials. However, Soft magnetic materials using powder metallurgical techniques are gaining wide spread use in motor, compressors and other rotating devices. High-density Fe-P soft magnetic materials have been developed using hot powder forging route. It was observe…
Double-coating of hot-dip aluminizing is a process of protecting steel from being oxidized. The process is featured that the component is firstly hot-dip galvanized and finally hot-dipped with aluminum. The comparison of interface morphology was conducted for single hot-dip aluminizing and double-coating of hot-dip al…
The tensile performance of the vinyl resin casting body, epoxy resin casting body, carbon fiber(CF) reinforced vinyl composites and CF/epoxy composites has been presented. The morphology of tensile fracture surface of CF/epoxy and CF/vinyl has been compared, and the interface adhesion has been analysed. The results sh…
A cellular automaton (CA) model was established to predict and control the microstructural evolution and flow stress characteristic during dynamic recrystallization (DRX). Values of model parameters were identified by a flow stress-based inverse analysis method; their variations with deformation conditions were estima…
Mg2Si reinforced hypereutectic Al-Si composite was prepared and the effects of electro- magnetic stirring on Mg2Si particle in the composite were researched. The results indicated that there were the important effects of electromagnetic stirring on size and morphology of the particle in the composite. The morphology a…
Do tests to study anti-penetration performance of ceramic multi-layer composite medium structure with simulation method of a 1:5 shrinking model and analyze its mechanism. The result shows that ceramic composite layers, which are composed by glass reinforced plastic materials and ceramic materials, obviously consume q…
An ausform finishing process that integrates heat treatment, rolling finishing and hardening of steel components into single on-line manufacturing operation is discussed in this paper ,with the gear steel 20CrMo which is widely used in auto and precise machine industry as a example .the tooth engagement process is mod…
The mechanical properties and microstructure of the high strength low alloy HC340LA were obtained with different strain rate. The research shows that the better plasticity, higher tensile strength and yield ratio can be found in high speed tensile state than in quasi-static tension. The plasticity and tensile strength…
The effects of varying weight percentage ratio of polypyrrole /montmorillonite clay (PPy/MMT) on the DC and AC conductivities are reported. The PPy/MMT nanocomposites were characterized by using the X-ray diffraction, FTIR and SEM techniques. The presence of sharp peaks is observed in the XRD spectra of PPy/MMT compos…
We designed an in-situ detection system suitable for Shanghai Synchrotron Radiation Facility. The system integrates remote control, temperature control, high-precision servo control and tension control technology, and can dynamically track the microstructure evolution of PAN precursor in the pre-oxidation and carboniz…
TiN coating is often coated on fine blanking tools made of with the powder metallurgy high speed steel S790 by Multi-arc ion plating. The phase variation, residual stress and microhardness of TiN coatings were respectively analyzed by X-Ray Diffraction(XRD) and Vickers hardness tester in this research. The result show…
The aluminum anodising industry is an important industrial sector that produces great amounts of polluted effluents, which after treatment generate sludge. This fact brings environmental and economical concerns to the companies. Best way to deal with the problem, according to the “prevention strategy” set by the Europ…
Particle reinforce composites coating of TiAl(CN) was made on the surface of Q235B steel substrate by reaction nitrogen arc welding cladding process, which take the titanium powder, aluminum powder and the graphite powder as original material. The microstructures, structure and the phase of the coatings were investiga…
Basic properties of akund fibers are introduced briefly. Cotton and akund fibers are spun into 18.45tex, 40/60 and 18.45tex, 33/67 cotton/akund blended yarns. The influence of carding processing length is studied. When the carding processing length is longer than the main length of akund fiber, the carded sliver has t…
Refractory castable specimens were prepared using industrial white fused alumina as aggregates, chromium oxide green and ultrafine alumina powder as matrix materials, solid aluminum dihydrogen phosphate (Al(H2PO4)3) or liquid AlPO4 as binder materials. Effect of different binder additions on the propertiSubscript text…
Forging processes have been studied since years. However, recently these studies are gaining in importance because of the increasing emergence of non conventional forging processes such as LIF processes, in order to improve their efficiency and to fit the production requirements. In this work elementary forging proces…
External corrosion is one of the most common causes of oilwell casing failure. Hostile environments can be due to acidizing treatments. Although it is common to add corrosion inhibitors and oxygen scavengers in acidic solutions to control external casing corrosion, their real efficiency is unknown yet. Therefore, it i…