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First, a number of studies focused on finding right parameters for processing this alloy (e.g. [3], [4]).
Individual grains can be distinguished based on different morphologies of the cellular substructure that fills the grains.
At 1000 °C (Fig. 3c), coarser blocky particles occupy grain boundaries, while finer rod-like particles fill grain interiors.
Recrystallization and nucleation of new hcp grains thus occur.
Grain size remained comparable to the as-built state (Fig. 1) and grains preserved their elongated character in the building direction.

The grain growth was enhanced with increasing preheating temperature.
The leakage current is influenced by the grain size, the crystallinity and the surface morphology.
In addition, decreased crystal defect and increased grain size was also produced with increased preheating temperature.
The dielectric constant is influenced by the grain size and crystallinity.
Grain growth as well as deposition rate were also enhanced with the increase of preheating temperature.

It was shown that the mechanical properties of the alloys, and especially their ductility, are harmed when tungsten grains are contiguous.
According to the grain size data in table 2, the mean grain size slightly increases with the effective sintering time because of the Ostwald-ripening.
The contiguity (the fraction of internal surface area of a phase shared with grains of the same phase in two-phase microstructure) and connectivity (the number of solid-solid contacts per grain) are the mean values for all the grains.
Grain size has significant influence on the tensile properties. 93W-4.9Ni-2.1Fe (13500C) 93W-4.9Ni-2.1Fe (1500 0C) Figure 3.
The tensile properties of 93% wt. tungsten are superior compared to 88% and 95% wt. tungsten because of comparatively less contiguity, grain refinement and passable matrix volume fraction.

Describe the practical bomb number might much more than theory.
M is the lunched number of rocket bombs.
Therefore, after hail grain formation, VIL value will leap increase for the ice grain scattering.
Use M=Q×V/(m×n×K) to calculate the bomb number.
VIL value will leap increase for ice grain scattering From the case analysis, rocket number will be various based on different dimension and development of hail cloud.

Due to the strength of the granular bainite organization exceeded to the pearlite organization’s, according to the hardening rule of the classical complex phase organization, the ferrite and pearlite replaced by the granular bainite as strengthening phase can raise the steel’s strength, using the grain boundary allotriomorphic ferrite whose grain size is relatively minor as malleable phase can increase the toughness of the hot-rolling granular bainite[1].
This bainite steel mostly consisted of the bainite structure cool in the air and become strong, which can simplify production processes, save a large number of energy resources, reduce environmental pollution, enhance the properties of products, also avoid the defects, such as the deformation, cracking, oxide, decarburization, and cut the cost remarkably, thus it gave rise to the tremendous attentions in the world[2].
Research on the structural transformation and property of the coarse-grained heat-affected zone (CGHAZ) of JB800 bainite steel developed by Jinan Iron and Steel Group Company with welding thermal simulation in this paper.
The granular bainite was used as strengthening phase and the grain boundary allotriomorphic ferrite distributed interruptively in the complex phase.
The grain boundary allotriomorphic ferrite have priority in producing plastic deformation so that they can block crack initiation and expansion and slack the triaxial stress concentration of the crack tip and make the crack tip inactive and raise toughness[3].

Shuren Chen et al. studied on header vibration for grain combine based on LabVIEW.
It offers the basis for the practical vibration environment of the instruments of the self-moving grain reaping machine.
Chronological number was 10 and spectral line amplitude values were displayed in valid form.
Development of a portable grain mass flow sensor test rig[J].
Vibration Test of a Self-moving Grain Combine Harvester[J].

The microstructure evolution considered in the software includes grain growth connected with the grain boundary sliding and dynamic recrystallization connected with dislocation creep.
As well know, the grain boundary sliding is the essential mechanism of superplastic deformation.
For example, considering a general hot forging of a billet with coarse grains, the grain refinement may appear in some regions of the billet with large deformation due to dynamic recrystallization under proper temperature, strain rate.
The initial grain of specimen material is the cylindrical grain with diameter of about 100 ­m and the length of over 500­m, the long axis direction is parallel to the symmetrical axis of the rod.
Fig.2-4 give variation of average grain size, fractioin of dynamic recrystallization and stress with radius R, respectively, and the number near curves represents the order of time steps of the curves.

However, the number of cavities near the fracture tip is quite small, and the cavities seem not to contribute to the fracture in a supercooled liquid region.
One possible fast accommodation path is amorphous phase in the grain boundary.
The formation of cavity is possibly controlled by amorphous phase that exists slightly in the grain boundary or triple junction of icosahedral phase particles.
Detailed analysis on grain boundary amorphous phase will be conducted by high-resolution TEM observation in the future works.
The formation of cavity is possibly controlled by amorphous phase existed slightly in the grain boundary or triple junction of icosahedral phase particles. 3.

The uniform fine-grained and fully recrystallized structure in sheets was obtained after rolling with preliminary annealing at 350-380°C and final solid solution treatment.
A small fibre thickness was caused by fine grain structure of the ingot typical for alloys with Sc and absence of recrystallization during hot deformation.
A fine fibrous structure remained almost completely nonrecrystallized, but with very few fine equiaxial grains.
X-ray spectral analysis was fulfilled on the elements with atom number > 10 (beginning from Na).
An average size of the grain was 15±0.7 µm in L direction and 8±0.3 µm in ST direction (fig. 7).

Calcarenitic contourites This type of contourite is coarser-grained.
(2) The mean grain-size ranges from 2.49Φ to 1.34Φ, this relatively coarse grain size of the contourites reflects moderately strong hydrodynamic conditions
Fig. 2 Grain-size accumulation probability curves of calcarenitic contourites in study area Table 1 Grain size parameters for calcarenitic contourites in study area Sample number Mean grain-size(Mz) Standard deviation(σ1 ) Skewness (SK1 ) Kurtosis (KG) 91-B70(1) 1.55Φ 0.596 0 0.982 105-B79 2.17Φ 0.777 0.007 0.982 107-B81 1.75Φ 0.651 0.014 0.967 110-B83 1.61Φ 0.683 0.008 0.972 110-B84 1.55Φ 0.549 0.003 0.976 115-B85 2.09Φ 0.565 0.006 0.983 115-B87 1.71Φ 0.640 0.019 0.981 115-B90 1.74Φ 0.724 -0.002 0.952 115-B91 1.55Φ 0.797 0.005 0.976 127-B95 1.47Φ 0.726 -0.029 0.971 128-B96 1.34Φ 0.790 0.002 0.972 129-B97 2.49Φ 0.486 0.012 0.998 Mean value 1.74Φ 0.665 0.004 0.973 Contourites successions The complete succession is composed of three types of contourites showing a symmetrical arrangement.
W. (1984) Deep-water fine-grained sediments:facies models.
Fine-grained Sediments: Deep-water processes and Facies.