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Figure 3 shows the force-deflection, force-time and impact energy-time diagrams for one of the specimens (denoted as ZUT 8, which represents specimen number 8, taken from the heat affected zone).
Fulfilling the cooling time requirements resulted in better microstructure (for the steel in question), in terms of grain size and mechanical properties.
The experiment in question involved impact energy testing of a number of specimens, which were divided into groups, and the results were then compared between them.
Thus, it was expected that these specimens would have better microstructure, in terms of grain size and, in this specific case, ductility.
Although this particular steel is mainly used for pressure vessels, there is a number of steels with other applications, such as civil engineering, which are very similar, in terms of chemical composition and mechanical properties.

The stress decreased in the carbide grains after the relaxation occurred by heat treatment.
The slightly molten particles impact on substrate and form a fine grain, dense, and laminar deposit composed of many layers (splats).
/min.] 420 Carrier gas (N2) flow rate [lit/min.] 20 Powder feed rate [g/min.] 40 Coating distance [mm] 280 Gun traveler speed [mm/sec] 10 Specimen rotating linear speed [mm/sec] 600 Number of passes 28 Heat treatment.
Scan number 1 2 3 4 5 6 7 8 9 ψψψψ angle -53.00 -48.34 -43.76 -39.15 -34.38 -29.28 -23.54 -16.40 0.00 Sin 2 (ψψψψ) 0.638 0.558 0.478 0.399 0.319 0.239 0.159 0.080 0.000 Start angle (2θθθθ) 119.025 119.025 119.025 119.025 119.025 119.025 119.025 119.025 119.025 End angle (2θθθθ) 123.975 123.975 123.975 123.975 123.975 123.975 123.975 123.975 123.975 Step size (2θθθθ) 0.050 0.050 0.050 0.050 0.050 0.050 0.050 0.050 0.050 Number of data points 100 100 100 100 100 100 100 100 100 Results and discussion Material characterization.
These powders also have fine WC grains, which are in micron range.

Analysis of the microstructure of the base metal, weld metal and heat affected zone of the sample number 7 was performed using metallographic microscope "Neophot-32".
So the microstructure analysis shows that the base metal is a ferrite and pearlite having a grain size of 11-12 µm on a scale corresponding to an average grain diameter ≈ 7 microns (see Figure 2, c).
In different areas of heat affected zone is observed fine-grained ferrite-pearlite structure with a high degree of dispersion [6].
Figure 2, b shows a micro crack with the 1.7 mm length in the HAZ of sample number 7.
N Machine Parameters Rupture time of specimens, [Sec] Number of cycles Rupture point of specimen Visual inspection of defect Load, [МPа] Section, [mm2] Reference Input, [kN] 1 440 216 95.04 228 1140 Welded Zone Seen 2 400 221.76 88.704 575 2875 Welded Zone Seen 3 360 221.81 79.8516 4600.5 23002.250 Separation line Undercut 4 380 213.64 81.18 2819 14094.5 Welded Zone Seen 5 340 209.5 71.230 14062 70311 Welded Zone Seen 6 420 211.8 88.950 4854.5 24272 Base Metal No 7 370 210.3 77.810 15555.6 77777.750 Base Metal No 8 390 211.5 82.471 2932 14660 Separation line Undercut 9 410 207.75 85.176 2655 13273 Welded Zone Yes Microhardness Test The PMT-3 is a microscope used for the measuring of the microhardness of the sample piece.

Hardness, drilling force and moment and number of holes drilled/tool measurements were carried out on specimens prepared from grain refined, Sr modified and heat treated Al-Si alloys.
After the parameters and the values input into the software (MINITAB 14), a DOE model will be automatically generated with specific number of runs coupled with specific parametric settings.
Hardness, drilling force and moment and number of holes drilled measurements were carried out on specimens prepared from Al-Si alloys in the Sr-modified and heat-treated conditions.
One way ANOVA for Number of holes drilled data results having a confidence level of 95% with hardness, %Mg, cutting force and moment are shown in Fig.2 for heat treated Al-Si alloys.
Fig.2 (a-d) show the results for the number of holes drilled.

In order to represent the complex-shaped grains of SiC, we make a number of particles bonded into a cluster (see Fig. 1).
Here we set the maximum allowable number of particles in a cluster equal to 7.
According to the range analysis, the date of number of surface cracks and maximum crack depth were analyzed.
Fig. 2 shows the effects of five elements on the number of surface cracks and maximum crack depth, respectively.
With the increasing of tool rake angle and tool edge radius, the number of surface cracks and maximum crack depth decreased.

This represents a considerable challenge since the number of parameters that need to be controlled is large and many of these factors interact with each other.
SEM studies revealed a complex "as-cast" structure in what appeared to be continuous grain boundary carbide networks at low magnification, Figure 4(a), were in fact regions of differential contrast (Figure 4(b)) which had slightly higher Cr contents than the grain interiors.
These were also crossed by prior austenite grain boundaries.
Microstructures comprised a cellulardendritic grain structure with continuous carbide networks at grain boundaries and not networks of high Cr concentration, Figure 5.
Acknowledgements The research reported in this paper was funded by the UK Engineering and Physical Sciences Research Council under Grant Numbers GR/R32222, GR/R32239/01 and GR/R32345.

The residual strain in longitudinal direction increased with LE and number of passes until yielding.
Their magnitude decreased with number of laser scans applied and a strong relationship between the distribution of residual elastic strains and microstructure was found.
Furthermore, the microstructure becomes visibly affected in the form of a bainiticmartensitic microstructure in the HAZ and with further depth, small recrystallized grains and carbon dissolution at the grain boundaries are most likely to be observed.
Acknowledgements This work was supported by the Engineering and Physical Sciences Research Council [grant number GR/S12395/01].
Experiments at the ISIS Pulsed Neutron and Muon Source were supported by a beamtime allocation from the Science and Technology Facilities Council [grant numbers RB920519 and RB910542]. 6.

Tungsten carbide grain size is 0.8μm, including 8% Co.
It called each ball end mill depend on using grinding wheel number.
Table 1 is shown relationship using grain size and called Finishing level and each rake grinding roughness.
Finishing level by grinding wheel number Finishing level Using grinding wheel number on rake surface 1 #800 and Lapping 2 #800 3 #600 4 #325 Table 2 shows coating features.　
Tool geometry and cutting conditions Cutting condition Tool geometry Cutting condition Roughing Finishing Work(piece) material HPM-MAGIC (40HRC) Tool photo R.P.M (min-1) 5500 5500 Tool size Ball size (mm) 5 Vc (m/min) 100 75 Flute length (mm) 18 Table feed (mm/min) 1430 1100 Overall length (mm) 100 Per flute rate (mm/t) 0.13 0.1 Shank diameter (mm) 10 ap (mm)　Z-Pick 1 0.5 Flute number 2 ae (mm)　XY-Pick 1 0.5 Coolant Dry (Air blow) 3.

As the material points interact over a grid, the results are not only influenced by the number of material points, but also by the size of the grid cell.
The grain size of the sand ranged between 1 and 1.8mm and its angle of repose was equal to 33 degrees.
Such an energy loss is observed in reality and is mostly a result of friction when the sand grains rotate during movement.
Material points in the column are coloured according to their numbering (similar to all the other figures).
The simplicity brings, however, a number of limitations including an inability to predict the volumetric behaviour very well.

Furthermore, TiAl3 is also an effective grain refiner since it acts as the nucleus of α- Al during the refinement of aluminum alloys [2].
In addition to its appeal from a basic science standpoint, the final motivation for the study is to explore the grain refinement mechanism of Al-Ti-B master alloys in the future.
The electron number of Ti-4s is only 0.23, the lost electron of Ti-4s has three traces: since the electron number on Ti-3p states is 6.71, extra 0.71 electron comes from the transformation of Ti-4s orbitals; about 1.0 electron on the Ti-3d states originates from the lost of Ti-4s state, and hybridization of Ti-3d and Al-3p states will contribute to the metallic bonding in TiAl3; the lasting electron 0.06 on Ti-4s states is transferred to Al-3p orbitals, as a result of the ionic bonding.
Tab.2 TiAl3 (001) surface relaxations as a function of slab thickness (change of the interlayer spacing Δij as a percentage of the spacing in the bulk) Slab thickness Interlayer 2 4 6 8 Δ12 0.86 0.2 0.5 0.1 Δ23 0 0.1 0.1 Δ34 0.1 0.1 0.1 Δ45 -0.2 0 Δ56 0.1 0 Δ67 -0.1 Δ78 -0.1 One way to ensure the presence of a bulk-like slab is to check for the convergence of the surface energy with respect to the number of atomic layers, n.
The (001) surface energy of TiAl3 are 1.49, 1.85, 1.73J/m2 as the layer numbers are 4, 6, 8 respectively.