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The results indicate the extension of the hardened zone in lateral and in depth direction with an increase in the number of applied laser pulses.
Furthermore the grain size of the martensite in the HZ is slightly larger (Fig. 2-II d).
The hardness values of the plateaus reduce from approximately. 6700 HM50/30 to 6000 HM50/30 with increased number of applied laser cycles.
This softening is attributed to the grain coarsening of the martensite structure and thus by the decreasing of the grain boundary strengthening mechanism.
Also the width of the hardness plateaus increases for increasing numbers of austenite-martensite transformation cycles.

The investigations of the application-relevant properties of the UNCD/a-C films revealed that they are attractive for a number of mechanical, tribological, structural, and biomedical applications.
The nanometer grain size makes the films valuable for tribological, field emission and structural applications.
The small grain sizes lead to higher feature resolution compared with polycrystalline diamond (PCD) films, where the grain sizes are on the order of several microns.
The diamond nanocrystals are randomly oriented; they are separated by the matrix forming grain boundaries of 1 - 1.5 nm width.
When the RNA sample was applied to UNCD/a-C films subjected to the above functionalization scheme, a number of small objects on the order of 20 nm can be seen in the amplitude AFM image, and a fraction of these is also visible in the height image.

Water consumption increased with the increased irrigation quota at the same number of irrigation.
Indexes such as maize yield, spike grain weight, ear rows and 100-grain weight were measured after harvest.
The yield indexes such as ear rows, spike grain weight and 100-grain weight in different irrigation treatments are shown in Tab.6.
The higher irrigation quota and irrigation times, the bigger spike grain weight and 100-grain weight.
In different irrigation treatments, the ear rows and 100-grain weight of treatment 5 and the spike grain weight of treatment 8 are the biggest.

In fact, the CPU time in a polycrystalline model is generally proportional to the number of constituent grains (it also depends on the constitutive law adopted for the crystallographic slip), and this model is called at each integration point.
First, it is necessary to specify the assumptions on which the behavior of the material at the grain scale is based.
are the components of the identity matrix, whose size is the current number of active slip systems.
Parameters τ0 [MPa] g0 yc [nm] Dmoy [microns] Grains Value 100 100 3.25 20 5000 where is the initial critical shear stress, the parameter related to the mean free path of dislocations, the critical annihilation distance of dislocations and the average grain size.
Parameters τ0 [MPa] g0 yc [nm] Dmoy [microns] Grains Value 120 90 3.25 20 5000 where is the initial critical shear stress, the parameter related to the mean free path of dislocations, the critical annihilation distance of dislocations and the average grain size.

Three bricks were prepared for every serial number with the weight of 8kg for each brick.
Bricks after being numbered were put into the kiln truck to be dried in the kiln.
With the content of Alumina-zirconia synthetic materials increased, the number of spinel increased, too.
Pictures of the erosion layers of eroded specimens 1# and 5# are showed in Fig 7 and 8.Through the comparison of the two pictures, it can be seen that the off-white area almost embeds grains completely and separates grains into different parts.
It also can be seen that the off-white coating of grains in 1# is thicker than 5#.

The EMA model expands the Maxwell-Garnett model by taking into account the fact that high frequency microwave can not completely enters the elementary metal material grains[3,4].
The skin depth of the metal grains depends on the microwave frequency, the grain boundary and the properties of the grains.
The following parameter is introduced to address the partly-entering effect, , (1) where R is the grain radius, σ1 is the grain conductivity, μ1 is permeability of the grain, ωis the microwave frequency.
Fig.2 shows the calculated reflectivity of slab samples with different grain volume rate.
Acknowledgment The project is supported by The Jiangsu Key Laboratory for New Ceramic and Its composite Materials, with the project number: Wjjqfhxc1200705.

The implication is that if a critical minimum amount of strain is required for tearing, the strain experienced by a liquid film at any g.b. will decrease as the number of grains increases, thereby lowering the possibility of tearing [32].
The grain structure of the alloy without Sc is partially recrystallized, whilst Sc addition produces unrecrystallized grain structure.
Further, a recrystallized grain is cathodic, and softer (thus allowing preferential deformation) compared to an unrecrystallized grain, and this would cause SCC to occur preferentially at the recrystallized grains.
It may be noted that Ag has the known effect of (1) remarkably reducing the PFZs adjacent to the g.b. as well as the size of the η precipitates at the g.b., and (2) forming an increased number density of η' precipitates in the matrix (through stabilizing more number of G-P zones early in the aging cycle).
Our studies revealed that due to the finer grain structure of the welds, the grain boundary eutectic film has a reduced volume fraction.

Powder forging was introduced to reduce the number of hot forming steps.
The submicron grains deformed by micro shear bands with intervening low strain and developed macroshear bands while the 20 µm steel developed elongated grains with 0.05 µm cells.
On annealing at 650°C for 600s when M partially reverts to γ, the large-grained specimen had mostly new grains of about 0.6 µm whereas the fine grained had them about 0.15 µm; the γ strength rose 15% above the martensite that had 1380 MPa (4 times the original γ strength).
Khlestov, Ultrafine Grained Steels E.
Zaripova, Ultrafine Grained Steels E.

The influence of chemical and hot-press drying on the compressive strength parallel to grain, the bending strength, the density, the water absorbent and the crystallinity of poplar wood have been investigated in this study.
Although a number of researches on chemical coupling in WPC have been published since the 1980s, chemical coupling mechanisms are not completely understood [3-4].
A number of research topics are focused on coupling agent performance in WPC.
The mechanical properties such as tensile strength and compressive strength parallel to grain were measured in three-point flexure on a universal mechanical testing machine (MWW-50) with a 100 kN load cell.
With increasing urea carbamate, the density, compressive strength parallel to grain and bending strength of modified wood obviously improve.

Grain web is 3.5 inch and inner diameter is 1 inch.
Loads [10]: Ignition Pressure= 850 psi, Zero Stress Temperature = 338 Kelvin Geometry [10]: Symmetry Number = 6, Diameter of Grain = 65 inch, Casing Thickness = 0.148 inch, Web = 17.36 inch Reasonable values of fillet and cusp radii are assumed.
Increase in Temperature produces thermal stresses in the grain.
References [1] “Structural Assessment of Solid Propellant Grains”, AGARD Advisory Report 350, 1997 [2] S.
Swanson, “Crack Propagation in Solid Rocket Propellant Grains Under Ignition Loading”, M.