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The structure grain boundary becomes more and more blur from inside to outside of the wall.
Table 1 Chemical composition of 30CrMo-M % Batch number C Si Mn P S Cr Mo 090106 0.30 0.24 0.60 0.012 0.003 0.91 0.18 090203 0.29 0.27 0.67 0.010 0.005 0.90 0.18 Test Method.
It can be seen from the diagram that the grain boundary becomes more and more blur from inside to outside.
The structure grain boundary is more and more blur from inside to outside along the wall thickness direction.

These precipitation phases in the grain matrix are the main age hardening mechanism.
This concept restricts the number of metal alloys that can be studied, such as iron, copper, aluminum, magnesium, tin or titanium.
In addition, the precipitation of AlNi phase in the matrix dendrites became larger and globular shape inside the grain matrix.
However, since the morphology do not show the Cr5Fe6Mn8 phase (σ-phase), the compound is finer grain.
These precipitation phases in the grain matrix are the main age hardening mechanism.

RESULTS AND DISCUSSION First of all, is calculated for a large number of samples reported in literature, by putting the values of HSC in relation (27).
To test the dependence of constant on physical observable quantities, a number of combinations were considered to the exact value of this constant.
The HSC’s of different soils at different grain size and porosity were measured (experimental values) using the plane heat source method [1].
It means grain size and nature of the material cannot be ignored in the study.
Jain, R Singh and D R Chaudhary: “Effect of porosity and grain size on heat storage coefficient of marble powder”, Optoelectronics and Advanced Materials- Rapid communications, Vol.3, No.1, , pp. 75-76. 2009.

The observed values of the diffraction patterns were in good agreement with standard values in JCPDS card file number: 00 - 0033- 0693 confirming the formation of cubic garnet.
(400) (420) (400) 420) (422) 521) (611) 422) (521) (611) (010) (110) (111) (111) (141) the diffractions reported by the standard in the JCPDS card file number: 01-073-0548 confirming the formation of the cubic garnet.
The rectangular loop for sample YIG indicates the consistency of the microstructure and grain size.
Observing the SEM image of the YIG sample from Fig. 7 it is observed that homogeneous microstructure was achieved with regular spherical size of the grains promoting the ability of the magnetic spins to hold the magnetic alignment at higher external field.
Sample XRD Magnetization 2 Theta (°) d-spacing (Å) Counts Grain size (nm) Ms (Gs) Hc (Oe) YIG 32.25 2.78 3718 58 27.20 23.65 BIG 32.08 2.79 4766 50 24.41 21.25 BIG 500 o C -25 -20 -15 -10 -5 0 5 10 15 20 25 -5000 -3000 -1000 1000 3000 5000 Applied field [Oe] Gs Fig. 5: M-H behavior of the BIG sample with sintering temperature of 700o C for 2 hours.

The mixing process is a particular unit operation which occurs in a great number of practical applications and in every processing industry (mining, pharmaceuticals, energy, food and agriculture) [3, 4].
Mixing of granular material has been defined as a process of dispersing a few components by chaotic, random movement of grains [5].
The need for mixing large volumes of dry granular materials is mainly present in the cement, grain, construction materials, and agriculture industry.
Cereal grains are the mixed components.
The mixing process occurs in a great number of practical applications and in every processing industry (mining, pharmaceuticals, energy, food and agriculture).

They experienced rapid development during the last decade, in particular in modifications of alloying base incorporating also microalloying issues, refinements of grain and lamellar microstructure, and fabrication technologies development including powder metallurgy procedures [1-4].
Individual microcracks in front of the major crack tip are usually formed (nucleated) at boundaries of two lamellas or on boundary of lamellar colony with equiaxed γ-TiAl grain (supposing they are present in the microstructure).
Local influence of deformation twin and/or intensive slip band onto this boundary and microcrack nucleation in neighbouring grain in local tensile stress field [6,7] is usually observed.
In addition, the load traces obtained for this test were consisting of a number of pop-ins following the very first one corresponding to crack initiation in chevron notch tip.
Acknowledgements The authors would like to express their thanks to financial support from the project of the Czech Science Foundation under number 13-35890S.

The EW tests concentrated on adjustment of the current intensity in relation to the selected active cathode surface (fixed by electrode number, size and immersion depth) to get an optimal current density at the cathode and a good Cu deposition (assumed quality criteria for Cu cathodes: light/ metallic color, fine grained deposition).
Preliminary tests were conducted with one cathode and anode each and at quite high current densities (450 – 490 A/m2) resulting in a very fast but coarsely grained Cu deposition with relatively dark colored surface.
For process optimization current density was reduced to < 200 A/m2 leading to a visibly finer grained Cu-deposition.
Acknowledgement This study was funded by the German Federal Ministry for Education and Research (BMBF), funding number is 033RF001.

This process uses polishing machines with rotating polishing heads in which a group of six abrasive fickerts are coupled in each head, arranged in a grit sequence from the coarser grain size to the finest grain size.
From the abrasive tests conducted to select the best matrix composition, it was used the most resistant composition trace found, which is represented by sample number 9.
Immersed in the resin, it was added the proportions of 50% of RHA and 45% of SiC in grain size #1200 mesh as fillers, and 13.3g of synthetic diamond as cutting element in the granulometry of #600 mesh for each fickerts produced (Fig. 5 (a) and (b)).
Moreover, the epoxy fickerts had inconstant wear results when compared to the ecological fickerts, presenting dispersion in the mass loss values, as can be clearly seen in group fickerts number 3.

Set up nodal value of the chain table (-1,-16,-2 ) to show the initial front table; ③Number of balls: n=0; (2) Generate balls at each time step ① Randomly generate the radius of the ball; ② If the node is added in the first layer; If n=0, then: <1> set the value of b as the value of head pointer of the front chain table; <2> calculate the coordinate position of generated balls on the basis of b and left boundary according to the requirement of ball contact; <3> Insert n element after the node numbered as -1; Otherwise: <1> set the value of b as the value of the node whose number is the next one after the present number of balls in the front chain table; <2> calculate the coordinate position of generated balls on the basis of b and the present ball; <3> if there is no out of boundary after adding this ball, then: insert element n after the node of the present number of balls (no need to examine whether it overlaps with the prior ball) ; Otherwise: get the position
of the ball on the basis of right boundary and the present ball, insert the node, delete the node of lower boundary, the number of nodes =-1; ③ If this is not the first layer addition; Find the node and calculate the position of the ball; Judge whether it overlaps with the prior ball.
Discrete element simulation of an assembly of irregularly shaped grains: quantitative comparison with experiments[C].

Nowadays the method of air current comminution, atomizing, is a acknowledged mechanical comminution means that can gain the finest grains.
(2) Where is a dimensionless number, a control variable of selecting pressure- gradient conversion method.
Fig.8 The velocity distributions of quadric accelerating jet nozzle Fig.9 The Mach number distributions of quadric accelerating jet nozzle Fig.10 The pressure distributions of quadric accelerating jet nozzle Fig.11 The outlet velocity distributions of quadric accelerating jet nozzle The other’s parameters: L11 is 4mm.
According to the comparison of two simulations, the outlet velocity, Much number of quadric accelerating jet nozzle are bigger than the linear accelerating jet nozzle’s.
Then the outlet Mach number gets bigger.