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The specimens were solid solution treated at 723±3K followed by water quenching, and got a single phase with average grain size of about 0.01mm.
The cyclic deformation curves of peak strain vs. cyclic number of DSA specimens under various stress amplitudes are shown in Fig. 2.
With increasing the cyclic numbers, the specimens undergo more and more plastic strain, which results in increasing the dislocation density on the main slip plane and the interacting between dislocations.
Due to the alternative moving of the main slip systems and the secondary slip systems, the main dislocation walls and the secondary dislocation walls will form and divide the grains into regular dislocation network (Fig. 3 [d]).
Meanwhile, this will also make it possible for more dislocation to slip within the grain and form dislocation cell easily with lower energy.

Material shear strength and tensile strength parallel-to-grain were determined using ASTM D143-94 [2] test methods.
Tests were conducted on small, clear, straight-grained specimens at 12% moisture content.
The number of replications and the summary of test results for each configuration are given in Tables 6, 7, and 8.
Experimental average flexural strength in non-reinforced glulam beams Number of beams E [MPa] Average flexural strength [MPa] 10 14800 45 Table 7.
Experimental average flexural strength in CFRP reinforced glulam beams Number of beams E [MPa] Average flexural strength [MPa] 8 15000 110 Table 8.

An increasing in stirring progress, it can strengthen mass transfer and heat transfer, the heat evenly；and it can control the crystallization rate，for the mixing process resulting in the shear flow can break the grain, produce more crystal nucleus, thereby controlling the rate of crystallization；it also can control the crystallization process in the residence time, mixing in the process resulting in radial flow will extend the residence time of crystallization；it can control the crystallization metastable zone width, so that the crystallization can be all in metastable zone.
The circulation area will make ammonium persulfate grain grew, then cut broken, thereby generating more crystal nucleus, then thrown out, thereby accelerating the crystallization.
The stirrer speed should not be too high, too high to cause shear flow speed is too large, resulting in the whirlpool and the grain crushing.
Liquid tangential flow is strong, over the heat transfer surface speed greatly, in the certain agitation Reynolds number range for heat transfer is very favorable.
According to the form of the power of the mixer blender, through the empirical formula calculation: (9) (10) Type: p is the stirring power; is the density of suspension, kg/m3; n is the mixing speed, s-1; d is the stirrer diameter, m; ReM is the agitation Reynolds number.

There are a large number of γ′ phase in the dendrite core and the interdendritic region.
Microstructure observation shows that a large number of slip deformations is produced near the indentation, as shown in Fig.1 (c) and (d).
The reason for this is that as-cast samples existing large numbers of eutectic and coarse g′ lead to nonuniform deformation.
Grain boundaries of recrystallization turn out to be cellular, as shown in Fig. 5(c), or linear, as shown in Fig. 5(d).
Meanwhile a large number of granular or strip phases precipitate near grain boundaries of recrystallization.

Total number of atoms was exceed 75000.
The number of atoms belonging to each of the crystallites has been determined in each of the subregions and related to that in the onset moment of time.
Psakhie, Atomistic mechanism of grain boundary sliding with the example of a large-angle boundary Σ=5.
Psakhie, Atomic mechanisms of local structural rearrangements in strained crystalline titanium grain, Tech.
Lejcek, Boundary plane distribution for Sigma 13 grain boundaries in magnesium, Mater. let. 137 (2014) 102-105

This is the reason for the rapid increase in the number of researchers actively engaged in CMSE.
Mechanics and Large-Scale Crystal Plasticity A number of projects within the light metals centre require modeling at length scales approaching the sample size.
These include calculations of the mechanical response of metallic foam sandwiches and trusses and of materials showing substantial anisotropy at the grain level.
These descriptions are usually at the length scale of a grain and can be used as the inputs for larger scale FE simulations.
Figure 2. a) Uniform elongation (εu) vs yield strength (σy). b) Experimental εu vs. σy curve (1=7.51020 m-3) and calculated curves for precipitate number densities ranging from 1020 to 3 1021.

It is proved that the carbon atoms mass transfer parameters and alloying elements depend on the scale and the level of emerging tension, relaxation of which goes along with a local plastic deformation, and occurrence of increased number of linear defects in crystal structure.
A thermal expansion coefficient anisotropy of neighboring grains disoriented to large angles, and the difference in the volume expansion of phases in multiphase materials (for example, in steel) can make a certain contribution to these processes.
The distribution of carbon from grain boundary cementite segregations occurred at a distance of L=2-3 µm (fig.1).
Such a high rate of carbon diffusion can be explained by the appearance of grain boundary layers of the liquid phase at the boundaries of cementite with the matrix (with ferrite) due to a contact melting, which occurs at temperatures significantly lower than the melting points of the components.
Therefore, the microheterogeneity of the matrix gives higher hardness, and under laser processing, one should strive to create the maximum number of such sections, that is, to increase the density of inhomogeneous sections in general over the hardened layer.

A large number of studies have indicated that the addition of Cr can effectively improve the corrosion resistance of the pipe under the corrosive environment of CO2[8, 9].
A large number of dislocations are generally included in the ferrite, and it is generally believed that the more the ferrite, the better the ductility and toughness of the steel.
From Fig. 1 (b), it can be seen that 3Cr (3Cr13) steel is composed of equiaxed grains, and its microstructure is a typical tempered martensite + a small number of dispersed precipitates. 13Cr steel also belongs to martensitic stainless steel, which is mainly used to prevent hydrogen sulfide and carbon dioxide corrosion.
In general, the composition and grain size of these 5 materials are different, and the grain size of supper 13Cr is the most uniform and finer.
This may be due to the finer grain size of supper13Cr, and the detailed explanation for this abnormal phenomenon needs further analysis.

In this paper, polymer chains of Nafion membrane are represented by coarse-grained model, in which each mass point corresponds to a group of atoms such as CF, CF2, CF3.
The number of the group of monomers shown in Fig. 1 is prescribed as , .
The number of the beads of Nafion membrane is 300,000 and the number of molecular chains is 370.
All the simulations are done using the coarse-grained molecular dynamics program OCTA/COGNAC [8].
Development of the number of elements with low density of beads (<10.0nm-3).

The main parameters of effectting pre-mixed abrasive jet cutting has:Jet injection pressure p; Nozzle exit diameter ; Cutting feed speed ; Stand off distance S; Abrasive supply ; The size of the grain and abrasive species.
The influence abrasive quantity and size of the grain is not obvious, because of composites materials low strength, even using less abrasive quantity and smaller abrasive particle size, also can realize effective cutting.
While the interaction effects among the three of , because of larger, ensure enough grain number, make influence significance of was declined.Therefore, when abrasive waterjet cutting composite materials,the cutting speed can be appropriately increase, reduce the abrasive supply and particle size, reduce injection pressure level, in order to get the best technical and economic benefits.
The test results show that pre-mixed abrasive water jet cutting pressure can also decrease. 4.2, between the abrasive supply and size of the grain with interaction effect, mutually have significant influence on restraint, specific parameter combination to through parameter combination trials to determine.