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A considerable number of soluble constituents remain in the alloy after conventional solution treatment owing to the limit of solid solubility dominated by the temperature for the onset of equilibrium melting.
Furthermore, the lower solvii for S and M of AA7085 would be expected to decrease heterogeneous precipitation during a relatively low quench resulting in stronger grain boundaries and for higher toughness and higher amounts of solute for higher strength [4].
As shown in Fig.5(a)and(b), after isothermal treatment at 480℃, the constituents of AA7050 melted and became continuously distributed along the grain boundaries, but no evidence of melting was found in the matrix of AA7085.
Through the stepped solution S4, the extent of dissolution of the soluble constituents was enhanced, higher supersaturation of the matrix was achieved and appropriate grain size (shown in Fig. 5(c) ) was got.
Whether self-diffusion or foreign atom-diffusion, the number dn of the particles passing through a unit area in a unit time is directly proportional with the grads dC/dz of the consistency which based on the supersaturation of the solution as is shown in Eq.(2) and Eq.(3) [11]

The grain size increases with the growth temperature.
However, these films contain numbers of grain boundaries and coalescence defects compared to the classic 3C-SiC(111) of the same thickness (Fig.1(a)) grown on bare Si substrate.
This is obvious since the CMP pre-treatment reduces the surface defects such as grain boundaries, coalescence defects and irregular steps [29].
We suspect that this is mainlly due to the poor uniformity of the layer number of graphene across the film surface that makes the interface pattern poorly visible.

The tungsten carbide ceramic particles of the medium grain size according to FSSS = 50 µm were introduced using the rotor conveyer to improve the properties of the surface layer.
Thanks to the rapid cooling because of heat removal to the cold substrate an advantageous, fine-grained structure develops, which may also display the gradient morphology.
The tungsten carbide powder of the medium grain size according to FSSS = 50 µm was used to obtain the highly resistant gradient layers and various laser power sequences were employed, which is presented in Table 1.
It was revealed also that the increase of laser power results in dissolving most of the introduced WC particles and causes increase of the number of cracks in the surface layer.

For example, the authors have established a high efficiency of SiC grains, as well as a better surface quality, as grinding does not cause thermal defects, there is no sticking and adhesion of active titanium.
The reserves for increasing the efficiency of grinding include: the use of wear-resistant abrasive grains and highly porous wheels (HP wheels), the creation of a medium in the cutting zone that prevents the martensitic transition, and more.
The number of parallel observations n is at least 5.
The number of repeated measurements on each sample is 3, this was done to determine the measurement error.
Occurrence of this phenomenon in the surface layer of the processed workpiece is caused partly by the force, and to a greater extent, by the thermal interaction of the abrasive grain and bond with the processed surface.

The Fe – Si alloys have homogeneous grain structures with equiaxed grains of about 1 mm in diameter.
In the outer region often elongated, radially inwards grown grains are observed.
The alloys with higher Si + Al content show again predominantly equiaxed grains (Fig. 2c, d).
In order to avoid texture effects, all specimens for mechanical properties testing were cut from the central area with equiaxed grains.
Numbers near experimental points in (b) indicate Si/Al content in at. %.

Introduction Through the last years, a nanomaterial has enjoyed the interest of huge number of materiel scientists due to its various applications that can be used in modern technologies like: magnetic fluids, magnetic separation, microelectronic devices, data storage and resonance imagery [1].
Actually, this method has a number of advantages, indeed, one can get appreciable quantities of powders, in addition, it presents an easy parameter control, and moreover it is not a cost full method hence it is very useful in the commercial applications [11].
Evolution of average grains size and microstrain as a function of Si concentration.
This decrease in (nm), may be due to the higher instability of the structure because of the defects (dislocations and grain boundaries) resulting from severe plastic deformations [26].
The increase in the coercivity Hc observed after the addition of Si can be associated with the large volume fractions of disordered regions (grain boundaries) [31] and defects [32] which are produced by severe plastic deformation during grinding.

The number of high strength Mg-based alloys is very limited.
Particle D distributes at grain boundaries and particle E distributes on divorced Mg17Al12 phase, which are all confirmed as secondary precipitation Mg2Sn.
The elongation increase after solution treatment is attributed to the reducing of the particles in the matrix and along grain boundaries.

There are main crops, for example, wheat, corn, soybean, sweet potato, millet, sorghum, rice, cotton, peanuts, tobacco, hemp, vegetables, fruits, tea, medicinal materials, grasses, sericulture and etc, it is also the main production of grain, cotton, peanuts, vegetables and fruits, it’s output and quality are ranked the national best.
(2) Through the Eviews 6.0, we can obtain the final result as shown in figure 3 Figure 3 The final result of eviews 6.0 According to the figure 3, all the Probs below the number of 0.05, that means they all pass t-test and L-M inspection, also it does not exist heteroscedastic, meanwhile R-squared equals to 0.983366; the results show that it has a higher fitting degree, so we can obtain the final equation: Y=-4097.254+0.140785*X1+0.544230*X2+ [MA (1) =0.912671] Economic interpretation From the regression results above, agricultural machinery total power on the influence of the increase of total output values the most significant, while other variables remain the same condition, this variable increases by one unit, the growth rate of agricultural output will increase 0.5373 units, Secondly the agricultural production is greatly influenced by the crops area, while other variables remain unchanged, the crops area increases by one unit, agricultural production will increase 0.129
We should support industrial advantages, high enthusiasm farmers of the country, the family of highly grain, and the market development of agricultural mechanization.

With the increasing of the firing temperature, a small number of flocculent shape particles can be still observed, but a great quantity of particles turn irregular, and the particles grow larger.
With the increasing of the firing temperature, the grains size increased, the amount of defects and distortion in the inner phosphors decreased, so the emission intensity increased.
With the increasing of the firing temperature, the grains size increased, and the morphology turns irregular.

Fig. 4 shows the sequence of SAED patterns taken from one of the crystal grain in the specimen (D) by tilting the foil during TEM observation, where the diffraction spots indicated by the white dash-dotted lines were to be conserved.
Fig. 4 Sequence of SAED patterns taken from one of the crystal grain in the specimen (D) by tilting the foil during TEM observation.
For those structures, the period of the intensity of the 0 0 0 l diffraction spots depends on the number of the atomic layer in the blocks, except for Fig. 7 (g).