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Fig. 2 – Sample preparation for the microstructure analysis of the welding area On Fig, 4 etched structure of solid solution of alloying elements in aluminum, and disperse phases are presented. 1 melt 2 melt 50 μm 3 melt 50 μm 4 melt Fig 4 – Microstructure of the welding area of the samples, obtained with exposure to pulsed magnetic field (PMF) (Etched, Magnification 360) 1 melt 2 melt 50 μm 3 melt 50 μm 4 melt Fig. 5 – Microstructure of the welding area of the samples, obtained with exposure to weak pulsed current (WPC) (Etched, Magnification 400) Their distribution is uniform through the thickness of the microsection, preferential orientation and alignment of inclusions are parallel to the sides of the section, which is typical characteristic of aluminum alloys deformed to large degrees of reduction during rolling.
Table 2 – Phase composition of the alloys № of melt Nanoparticle phases 1 2 3 4 5 1 Al6(MnFe) Al6Mn Al3Zr Al12Mn2Cu Al3(ZrSc) AlB2; AlB12 2 Mg2Si AlFeSi Al3Sc AlB2; AlB12 3 Mg2Si AlFeSi Al2Cu Al3Sc AlB2; AlB12 4 Al6(MnFe) Al6Mn Al3Zr Al3Sc Al2Cu Al2MgCu Al12Mn2 After scoping various literature sources we couldn’t manage to encounter any data on comparisons of physical impact of weak pulsed current (WPC) and pulsed magnetic fields (PMF) on the samples of conductor aluminum alloys.
The results indicate reduction of the size of the grains, increase of plasticity and approach of properties of the welding seam to those of base metal.

In this case, along with the deformation in the longitudinal direction, which is characteristic for rolling on thick-sheet and wide-strip mills, there are conditions for deformation of the metal in the transverse direction, which has a positive effect on the reduction of anisotropy of properties.
Rolling in the relief rolls with the unequal relation of the protrusion to the depression was carried out in five passes with a reduction in each pass ∆h=0.6 mm.
Table 1 – Hardness values of samples of brass B63 Material Treatment Vickers hardness, HV Brass B63 Annealing 87,25 Rolling in smooth rolls 172,54 Rolling in relief rolls 193,16 Conclusions The combined analysis of new and previously obtained data demonstrates the advantage of the relief rolls before smooth in terms of obtaining isotropic grain structure of rolled metal, and hence that the quality of rolled plates is increased.

The drilling hole and adit data show the average thickness of the deformation body is 41m, the maximum thickness is 66m and the total volume is 220×104m3.
Based on strength reduction method, the slope stability safety factors are calculated under natural condition, flood condition and earthquake condition.
Based on strength reduction method, the slope stability safety factors are calculated under natural condition, flood condition and earthquake condition.

This welding source has a 32-bit ARM processor which, in TIG-AC welding, allows varying the positive and negative current frequency amplitudes of the rectangular wave as well as the activation times of positive and negative polarities and acquisition of data.
The photomicrographs show a larger processing area for welding balancing conditions in 50% of the operation time of the positive polarity cycle, revealing that the positive cycle time restriction strongly interferes with the reduction of the temperature required for the welding process.
It was also possible to observe that the cycle time of the decreasing wave, in the range below 50%, that is, 32.5 and 15%, directly implies the reduction of the penetration and the width of the TIG-CA welding process.

In chemical wetting, chemical reactions between the interfaces result in chemical bonds responsible for the wetting, and the associated Gibbs free energy becomes the driving force for the reduction of solid-liquid interfacial tension, which improves the wettability [7,8].
In this temperature range, it was observed the beginning of the contact angle reduction after the glaze has started to melt.
Based on this empirical data, mathematical models can be adjusted to describe the behavior of the contact angle (y) versus time (x).

Utilization and any use of recycled materials, in our case concrete, contributes to the reduction of stored unused waste at landfills.
Use of FGRC in the mixture of cement mortar leads to a reduction of production costs and also leads to waste disposal of construction and mitigating the impact on the environment.
References [1] Eurostat, Statistical data on waste, 2015

Table 2: Welding parameters and tool data for the investigated specimens Rotation velocity [min-1] Feed [mm/min] Tool shoulder [mm] Pin diameter [mm] 1000 120 10 2 1500 120 10 2 2000 120 10 2 Results and discussion The investigated alloys AZ91, AE42 and QE22 exhibit a very large grain size in the as-cast state, d ~ 200 μm, 150 μm and 100 μm for AZ91, QE22 and AE42, respectively.
The transformation of samples after annealing at of 250 °C leads to a reduction of the grain size and thus the mean particle size is 18.8 µm.
As shown in Figs. 3b-d, the aging between homogenization and extrusion leads to further grain size reduction in the extruded material.

Current research works on fuel cells are focused on reduction of production costs, miniaturization of generators and auxiliary equipment as well as development of hydrogen supply infrastructure.
Most fuel cells for production of electricity use hydrogen oxidation on anode and oxygen reduction on cathode.
Analysis of data reveals that the sinters with austenitic structure demonstrate higher corrosion potential and higher current density within the passive range.

The thermal reduction of iron oxides proceeds during this process.
A constant sample mass was assumed as the end of the reduction process.
The data shown were obtained for the reactions of oxidation and carburization of fraction A.

Although these two methods have targeted the deflection problems of thin-walled components, the attention is focused on the optimised fixture in terms of error reduction.
Guo et al. [7] proposed a stretched fixation method stretching components with single axial direction forces, producing machining deflection reductions compared to normal fixation in FE prediction in end-mill machining operations.
The data collected are deflections of thin flat-bars and machining forces of the face-milling process.