Materials Literature
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Rotational rheometer was employed to determine rheological properties of sodium alginate solutions of 3, 5 and 10wt.% concentrations. The results showed that temperature had a strong effect on the morphology of sodium alginate in aqueous solutions. To observe the anisotropic phase formation, Polarized optical microsco…
The effects of the 12T magnetic field on transformed morphology and crystallographic characteristics of high purity Fe-1.1C (wt.%) alloy during diffusional decomposition of austenite are studied by SEM/EBSD. With the applied field, the lamellar spacing of pearlite is greatly enlarged and the spheroidization tendency o…
Two kinds of fiber materials, glass fiber and technical polyester filament were used to design six different kinds of woven spacer fabrics. Then in the space of the fabric the polyurethane foam was filled and on the surface of the fabric the epoxy resin was combined by means of handle paste shaping craft to build the…
In the present study, in situ phase transformation experiments have been carried out using neutron diffraction to monitor the texture evolution during the α→ß→α phase transformation in Ti-6Al-4V with and without 0.4% yttrium additions. The aim of adding yttrium was to control ß grain growth above the transus ß by grai…
One of the major applications for cold formed carbon steel ‘C’ sections is through load carrying structural frame side members in heavy road vehicles. Though it is expected that forming operations would enhance the mechanical properties of sections as a whole by strain-hardening, it leaves certain amount of residual s…
The analysis of windshield against bird strike is necessary for reducing the disastrous consequences. The flat windshield which involves two pieces of glass together with a polyurethane interlayer is often used in the aircraft. The mechanical property of the polyurethane interlayer is an important factor of affecting…
Plane-strain compression testing on HSLA steel samples using single-pass and multi-pass hot-deformation schedules showed that heavy deformation of metastable austenite below Ae3, developed ultra-fine ferrite grains (<3 µm), increased the fraction of high-angle (>15º misorientation) boundaries (>70%), and encouraged th…
The viscosity of eutectic PdSi alloys has been measured by different techniques. The conventional oscillating cup viscosimetry was used in the ground-based laboratory, while the oscillating drop technique was applied in a microgravity experiment. Different working equations were utilised to derive the viscosity from t…
Severe cold rolling and short intercritcal annealing is often used to produce ultra-fine grained ferrite and martensite dual phase steels. In this paper, microstructure and texture of Nb-microalloyed steel following cold rolling and short intercritical annealing is investigated. The results show that cold rolling and…
Rolls in the steel industry withstand very high loads, thermal cycling leading to thermal fatigue, and severe environmental. How to improve the wear resistance and elongate the service life of rolls matters a lot in reducing the consumption of rolls. In recent years, because of its better red-hardness and wear propert…
For long-time diffusion experiments shear-cell techniques offer more favourable terms than the traditional long capillary techniques. Here, we present a further developed shear-cell that enables the measurement of diffusion coefficients up to temperatures of 1600 °C. Hence, diffusion experiments can be carried out at…
The agglomeration of metallic nanoparticles can be performed using the well-known inert gas condensation process. Unfortunately, thermal effects such as convection are created by the heating source and as a result the turbulent aerosol avoids ideal conditions. In addition, the sedimentation of large particles and/or a…
Finite element simulations are widely used in the analysis of bird strike events in the literatures. While the shapes of the artificial birds used in the simulations are not indentical. In order to investigate the effects of artificial bird shapes on the response of laminated aircraft windshield, the often used shapes…
The 9Cr-1Mo-0.1C steel was solutionzed (1323 K for 1hr) and step cooled (at 40 K/hr between Ms and Mf) to effect martensitic transformation at slower rates, and then subsequently tempered (1023 K for 2 hr). The microtexture of the tempered martensite structure was evaluated using SEM-Electron Back Scattered Diffractio…
The relevance of EBSD-based investigations for statements on the macroscopic or mesoscopic behavior of materials is critically relying on the statistical representativeness of the data. Particularly, the statistical reliability of the EBSD-based results (e.g. texture, phase fraction or grain size) remains an open ques…
NaOH solution was utilized in the molten salt reaction of titanium slag for investigating desiliconization effects. The thermodynamic behaviors of Si in the reaction system was examined to explore the impacts of molten salt reaction conditions on the conversion rates of the foreign substance Si and the target element…
Bacterial cellulose-poly (ethylene glycol) composites (BC-PEG) were biosynthesized by adding different molecular weight of poly (ethylene glycol) into Acetobacter xylimum culture medium. The obtained BC-PEG composites were characterized by scanning electron microscopy (SEM), thermogravimetry (TG), X-ray diffractometry…
The aerospace industry uses a variety of materials in different forms like sheets, forgings, extruded rods, welded components and machined components for launch vehicle and satellite applications. As lighter and stronger materials are the aims of the aerospace industry, aluminium alloys are the most widely used materi…
Ultraviolet and X-ray photoelectron spectroscopies are used to probe the chemical and electronic structure of an amorphous, 2-20 nm-thick shell that encases the crystalline core in core-shell nanoribbons of TaS(3). The shell is chemically heterogeneous, containing elemental sulfur and a with a notable (S(2))(2-) defic…
The dehydration kinetics of phase change material KAl(SO4)2•12H2O was studied under non-isothermal conditions and the Kissinger’s method was applied to analyze the TG and DSC data in order to calculation of activation energies and pre-exponential factors for different heating rates. It was concluded that dehydration o…