Materials Literature
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The microstructured samples were prepared by irradiating silicon surface with picosecond laser pulses in SF6. The surface morphology of microstructured samples irradiated at different laser fluence was characterized by SEM. The samples exhibited high optical absorptance over a wide wavelength range between 300 and 270…
Nanosized perovskite YTiO3 with the mean crystallite size of 18 nm was synthesized for the first time by mechanochemical treatment. The mechanochemical solid state reaction between commercial Y2O3 powder and mechanochemically synthesized TiO powder in molar ratio 0.5:1 was completed for 3 h in a high-energy planetary…
A particle reinforced hardface coating was prepared by vacuum cladding process. Firstly, titanium carbide composite powders were prepared by self-propagating high-temperature synthesis (SHS). The hardface coating was then formed on plain carbon steel substrate with the TiC composite powders and high chromium iron-base…
The study of polyurethanes are of continuing interest due to their excellent physical properties. In this study, the reaction kinetics and polymerization conditions in two-step process of toluene diisocyante (TDI) and polypropylene glycol (PPG) with organo-tin mixed catalyst were investigated by di-n-butylamine back-t…
The tensile tests of DP590 dual-phase steel tailor-welded blanks were carried out at different temperatures and strain rates. Quantitative analysis of metallographic was utilized to study the microstructure evolution of the base metal area and the weld zone of the tensile fracture. By combining the microstructure evol…
For buliding the mathmatical model of elastic deformation for rolls system with a composite back-up roll assemblled by the shrinkage fit, the roll sleeve and roll mandrel was studied individually, the bending force was acted on the working roll and the load acted on the contact zone was discreted segment by segment, t…
Texture of the ARB processed commercial purity aluminium was investigated in order to explore the stable component in rolling texture more than 95 % of rolling reduction in FCC metal sheets having high stacking fault energy. Weak location dependence along normal direction was observed in the sheet up to ARB 8 cycle, w…
In this work microstructure evolution in a columnar polycrystal of pure aluminum is studied using a microstructure sensitive crystal plasticity finite element model (CPFEM). In the model, based upon the kinematics of crystal deformation and dislocation interaction laws, dislocation generation and annihilation are mode…
There are two opposing theories regarding the nature of aligned dislocation boundaries generated during plastic deformation of FCC metals: (i) they are oriented along crystallographic planes, and (ii) their alignment is dictated by the macroscopic stress state during plastic deformation. 3D crystallographic orientatio…
In order to increase the sustainability of metals, a more detailed understanding of the corrosion process is of crucial importance. Current literature often considers corrosion as a purely chemical interaction with a nearly exclusive dependence on compositional effects, while ignoring microstructural and crystallograp…
En base al estudio realizado por las universidades de Sevilla y Glasgow sobre ladrillos de tierra cruda, lana y algas (Construction and Building Materials, Volume 24, Issue 8, August 2010, Pages 1462-1468), se pretende trabajar en el desarrollo de un nuevo ladrillo de tierra cruda, no toxico y ecologico, al cual se le…
The three-dimensional spin structure of the magnetic vortex of FeSiB, an amorphous soft magnetic material, was investigated by holography observation and computer simulation. Magnetization distribution in the neighborhood of the vortex center was estimated from the phase distribution obtained by holography observation…
In this study, digital treatment method was developed in order to reconstruction of the 3D CAD of hemp fibre geometry. The influence of each aging condition (moisture, heat and UV aging) on the mechanical properties of hemp fiber is investigated by micro tensile tests. Different hemp fibre morphologies was presented a…
In this paper, the author successfully fabricated Mg-3Sr-xY alloys by melting-leaching reduction method using SF6 and N2 as protected gas. The microstructures of the Mg-3Sr-xY alloys were investigated in details，and the results showed that Mg-3Sr-xY alloys are composed of dendrite α-Mg and eutectic α-Mg and Mg17Sr2 an…
Electron Backscatter Diffraction measurement can provide much analytical information, such as the phase orientation or material identification. The “Quality” rating of the backscatter diffraction depends on the success rate of indexing. To achieve this, a deformation-free preparation is essential. In recent years most…
Herein, we present a new polytopic N-donor, which is used to construct a metal–organic compound. The resulting metal–organic compound, Cu4(L)6(NO3)2 (HL=(1H-pyrazol-3-yl)pyrazine) (1), is synthesized by the hydrothermal reaction of Cu(NO3)2 and HL (ratio: 1 : 1). Single-crystal X-ray diffraction shows that 1 comprises…
Aluminum bronze powders with free and 0.1wt%Ce were plasma spray welded on 45# carbon steel substrate, Effects of rare earth Ce on the microstructure and wear resistance of plasma spray welded novel aluminum bronze coatings were investigated. Tribological properties of coatings were tested on reciprocating sliding tes…
A 3D microstructure, measured by high-energy x-ray diffraction microscopy, is used as an input to a parallelized viscoplastic Fast Fourier Transform code (VPFFT) to simulate a tensile test. Distributions of strain, damage accumulation, neighbor interactions, and Schmid factor mismatch throughout the microstructure are…
Abstract The synthesis, formulation, and wafer level processing conditions of a heavily fluorinated hydrophobic photoresist was demonstrated. The synthesis is based on terminal epoxy modification of commercially available perfluoropolyethers. Structural characterization shows that terminal epoxide can open during the…
Interstitial free high strength steels (IFHS) are widely used in the automobile sector due to their high strength and excellent formability. However, these properties of IFHS steels are very much dependent on the processing parameters, like hot rolling, cold rolling and annealing. The composition and processing parame…