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The advantages of the MSD approach are demonstrated through a number of elastic-plastic property closures for cubic metals. 1.0 Introduction Material properties significantly influence the performance of a given design.
However, the basic building block of a polycrystalline material, the single crystal (also called a grain), exhibits strongly anisotropic mechanical properties.
For a macroscopic tensorial property of interest, P, its dependence on the local crystal orientation is denoted by P(g) and expressed in Fourier series as [4] ( ) ( ) ∑ ∑ ∑== = = l l l l µν l µν l gTP g ~ 0 )M(1µ )N( 1ν P &&& , (9) where µνlP are referred to as the property coefficients, and it is explicitly noted that this Fourier representation extends to only a finite number of terms [4,10].
For this purpose, one needs to select a distribution of grain orientations in the fundamental zone of the cubic-triclinic orientation space and compute the values of * ijW , ijσ ,,and ∑α α γ& for each of the selected orientation using the crystal plasticity models (e.g., Taylor-type model [12]).

Ti2AlC particles with size less than 1 μm are distributed uniformly in matrix grains as a reinforcing phase.
Ti (wt. %) Al (wt. %) C (wt. %) Theoretical target Ti2AlC content (wt. %/) T 0 64 36 0 0 T 5 64.36 35.20 0.44 5.00 T 9 64.64 34.56 0.80 9.00 *TX refers to the sample number, and X is the targeted weight per cent of Ti2AlC phase Results and discussion Fig.1 is the XRD spectra of Ti-Al-C (T5) composites hot pressed at different sintering temperatures.
Compared with Fig. 3(a) and (b), it can be seen that the grain size of the TiAl/Ti2AlC composites becomes remarkably finer and distributed more uniformly due to the effect of in situ formed Ti2AlC.

But, a large number of ours research results have confirmed such a conclusion that the grains is ground into fine powder, and the finer the grains are, the better properties of the piezoelectric ceramic will be.
Nowadays, grains of raw materials are using high-speed fluid energy milling or superfine vibration-mill pulverizer, which are all smaller than 2 and to class of superfines.
Besides, physical and chemical nanometer-size powder techniques are also tried using preparation of grains of raw materials, but, obtained nanograins are only a few.
As a result, present work cannot yet use their grains ofraw materials of class of nanometer to development and a large number production of piezoelectric ceramics nowadays.
And in this case, the grains of the powder of raw materials are closely combined with each other, and their contact area has increased.

After being heated, it was then sifted with size 30 and 40 sieves mesh to obtain grain uniformity.
EDX was done at the grain shown in Fig. 4 (b) in the entire grain area.
Morphological testing with SEM EDX showed that after the spent coffee ground was added with HCl solution, there was conglomeration and a reduction in the number of pores on the grain surface.
As much as 60.07% atomic concentration of Carbon compounds (C) with 1.15% atomic concentration of chlorine compounds (Cl) in the analyzed grains was found.
SEM results also show morphological changes of spent coffee grounds so that the pores in the grains are reduced.

Major issues like ball milling time, dispersion of reinforcements, grain size, the stirring time and speed are discussed.
Homogeneous dispersion of MWCNTs in the AA4032 matrix composite was obtained and there was decrease in grain size and increase in strain with increase in milling time [11].
The MWCNTs appear to have homogeneously entrenched into the Al particles but SWCNTs and DWCNTs were evidently not dispersed fully within the matrix due to the morphological characteristics of each type of CNT such as shape, number of carbon walls, and diameter, and specific surface area.
Abhishek Kumar el.al. have done the fabrication and characterization of A359/Al2O3 metal matrix composite using electromagnetic stir casting method and through the micro structural observation they suggests that the electromagnetic stirring action produces cast MMC with smaller grain size and there is a good particulate matrix interface bonding [20].
Shahverdi, Microstructure study on Al-5%SiC nanocomposite powders, Iranian Journal of Materials Science & Engineering Vol. 8, Number 1, Winter 2011 [14] Heekyu Choi, Lin Wang, Dongkeun Cheon, Woong Lee, Preparation by mechanical alloying of Al powders with single, double, and multi-walled carbon nanotubes for carbon/metal nanocomposites, Composites Science and Technology, 74 (2013) 91–98 [15] Z.Y.Liu, S.J.Xu, B.L.Xiao, P.Xue, W.G.Wang, Z.Y.Ma, Effect of ball-milling time on mechanical properties of carbon nanotubes reinforced aluminium matrix composites, Composites: Part A 43 (2012) 2161-2168 [16] Naiqin Zhaoa, Philip Nashb, Xianjin Yang, The effect of mechanical alloying on SiC distribution and the properties of 6061 aluminum composite, Journal of Materials Processing Technology, 170 (2005) 586–592 [17] A.J.

Compacting pressure values have been found by compression curve when plastic deformation ends and elastic deformations of powder grains start, which corresponds to a translation from the second to the third stage of the pressing process.
Determination of the optimal compression pressure values depending on the humidity and the type of raw material, ensuring maximum performance ceramics, is very time consuming and requires the preparation of a large number (often reaching tens or hundreds) of ceramic samples.
The discovered data indicates that plastic deformations end and elastic deformations of the grains of powder begin with pressing pressure is 15-16 MPa that corresponds to a transition from the second to the third stage of the pressing process.
Conclusion Application of the method for determination the compressing parameters of ceramic products with application of mounting for compression curves readout allows to find the values of the compacting pressure when plastic deformations end and elastic deformations of the clay powder grains begin, and the pressure of the transition from the third to the fourth compression stage characterized by the destruction of their structure.
Gained dependences of different moisture molding material sediment on applied pressure allow to significantly reduce the number of experimental research and to find the optimal values of molding of ceramic products from the charge based on medium plastic silty loam.

P element does not spread easily, mainly in the brazing clearance; Cr element can spread along the grain boundary into mother material; the ability of spread of Ni elements is less than the Cr element.
Solder trend combined into the compound of Ni-Cr phase. [2] As soldering temperature is 940 ˚C, as the low temperature, P element cannot fully separate out, result in a large number of complex intermetallic compound generated in the joint center.
Cr can spread along the grain boundary into mother material; the ability of Ni elements spread into the base inferior Cr element. 3.The joint, brazing temperature of 970˚C, has the highest shear strength, the value is about 71.MPa.

Scanning electron microscopy shows that the films consisted of a large number of hexagonal crystallites.
Around the center, the temperature is high which would be likely to produce α- or β-C3N4 crystal grains.
A large number of hexagonal crystallites with size up to 3 µm are observed to cover the entire substrate.
Enough nitrogen concentration has been incorporated into these crystalline grains to form C3N4.

., 0C, 11C and 25C); whereas crystal defects such as grain boundaries governed the corrosion of those containing crystal phase more than 25 % (i.e., 50C, 75C and 100C).
Subsequently, a number of metallic glasses revealing thicker cross section were developed because of the accomplishment of glasses structure even the quenching rates were lowered to 1 K/s.
It was reported [1, 2] that corrosion commonly took place at the defective sites such as grain boundaries, dislocations, precipitates and segregations in the metals and alloys with polycrystalline structure.
According to the mechanism, the remained free volume and residual strain energy are responsible for the specimens containing crystal phase less than 25% (i.e., 0C, 11C and 25C); whereas crystal defects such as grain boundaries governed the corrosion of those containing crystal phase more than 25 % (i.e., 50C, 75C and 100C).

Characteristic diameter of the bath based on the value of the Bond number for welding and surfacing of steels [6] is assumed to be 10mm .
Due to intensive mixing in a magnetic field ferrite-pearlite grains are disoriented.
In addition, the build-up metal has a very fine structure - grain size of the build-up metal is 10 ... 12.
In the case of an alloying charge input with the arc axis shift 4 ...6 mm we achieved the grain refinement of build-up metal from 6 ... 8 ... 10 to 12 points.