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Samples rolled with the finishing temperature Tfr = 980oC were fully recrystallized with the grain size of 25-30 µm.
Higher Tfc = 550oC gave granular bainite microstructure, with large tough particles located at the austenite grain boundaries, which cause decrease of the plasticity.
The objective of the rolling tests was designing of the thermomechanical processing technology, which gives large number of nucleation sites for ferrite and bainite located at the grain boundaries and at the strain localization bands.
Full recrystallization is obtained in finishing passes and the grain size is in the range of 20-30 µm.
Increased number of ferrite and bainite nucleation sites was obtained.

It is one of the three provinces that the national grain yield is more than 30 million tons.
In the "drought of Henan Province in 2011 to win the harvest of summer grain implementation plan", the provincial government used "rarely seen in history" to evaluate this year's drought.
The continued drought will certainly affect the normal growth and development of wheat, even a threat to the annual grain harvest of summer grain production.
Over the years, while in the pursuit of high-yield agriculture, and for many years a large number of nitrogen and phosphate fertilizer application has been made apparent in many areas rich nitrogen or phosphorus-rich phenomenon.
In such a system, the lack of coordination makes the construction of a number of government-funded irrigation project which has been completed lack of timely maintenance, follow-up project investment subject is not clear, restricted the promotion of water saving technology demonstration.

A number of difficulties related to the consolidation of nanocrystalline powders often limits the assessment of different properties of the bulk component, the mechanical behaviour in particular.
During last decade significant advances have been made in the theory and practice of the consolidation of nanoscale powder stimulating the production of fully dense parts with nanometer grain size [11-13].
An attempt to measure the grain size from the (111) peak indicates an unreasonably small value that could be thermodynamically unstable.
The major amount of the powder in the alloy containing 85 wt.% Al has formed a chunky mass with a much reduced number of agglomerated particles adhering to the surface of the larger chunk.
However, grain size of the milled product has somewhat reduced with an increase in the consolidation temperature from 200o C to 400 o C without any significant variation in the nature of the constituent phases.

As shown in Fig. 4, when the helium gas addition to pure argon gas was set at10%, the numbers of pore in fusion zone are less than that set at 2.5%, 5.0% and 15%.
When the helium gas addition were set at 2.5% or 5.0%, the grains were finer and columnar crystal zone was thinner as shown in Fig. 5.
The grain size of the fusion zone is affected by the welding process.
When the helium gas addition to pure argon gas was set at10%, the numbers of pore in fusion zone are less than that set at 2.5%, 5.0% and 15%.
However, when the helium gas addition was set at 10% and 15%, the grain size of fusion zone is larger than that set at 2.5% and 5.0%. 4.

Up to now, the specific law of ternary alloys’ HTS has yet to be studied, and we support that the number of HTS’s peak points is closely related to the number of ternary eutectic reactions.
The eutectic liquid fraction is low and decreases with the increasing of Si content, which indicates less grain boundaries are wrapped by the liquid films and then reduces the probability of being pulled apart between the grains.
In contrast, more eutectic liquid wrapped more grain boundaries, which increases the probability of being pulled apart between the grains and then increases the HTS during 2.44-4.0 wt.%.

Average size of inclusions or grains was tested by quantitative metallography method (linear intercept method).
Power dissipation map of 1235 Al alloy treated by conventional refining at the strain of 0.7 The contour lines in Fig.4 and Fig.5 represent the same efficiency of power dissipation (η), the numbers against each contour represent the value of η.
Under the condition of T=773 K and =0.1 s-1, the recrystallized grains are coarser.
However, under the condition of T=773 K and =0.01 s-1, the recrystallized grains are equiaxial and even small.
The average grain sizes of Fig.12(a) and Fig.12(b) are equal to about 75.4μm and 71.5μm respectively.

The accumulated, recrystallized grains can potentially form shearzones which enhance the formability of AZ31 [14].
The metallographic picture of scenario 1 in Fig. 8a shows a microstructure with serrated boundaries evolving from a high density of dislocations entering the grain boundaries, which are larger than the capacity of grain boundaries to absorb them.
The activation of DRX with a very fine grain-size is expected.
However, scenario 2 has a higher hardness because of finer strain-free grain structure.
Parts of this research are funded by the German Federal Ministry of Education and Research (BMBF) within the Framework Concept ”Research for Tomorrow’s Production” (funding number 02PU2104), managed by the Project Management Agency Karlsruhe (PTKA).

Samples were quenched after slurry preparation and the microstructure was studied with respect to solid fraction and a-Al grain diameter.
Further, it was found that the solid fraction as well as the grain diameter decreased with increasing aluminium content (at constant EEM to weight ratio).
The average size of the α-Mg particles is naturally a consequence of solid fraction and of the number of particles.
However, when studying the particle diameters in the same experiments, see Fig. 4, it seems that the corresponding diameters actually have decreased for both 6% Al and 11% Al, also meaning that the number of particles formed has increased.
However, from a simple volume calculation using the solid fraction and the particle size (assuming spherical particles) it can easily be shown that the number of particles has increased significantly when increasing the Al-content.

It is widely used in buildings, mines, factories, tunnels, vehicles, ships and air cooling towers and cooling; grain drying and sending; inflatable hovercraft and propulsion.
The main structure parameters Name Symbol Size Interior diameter of impeller D1 513.8 [mm] External diameter of impeller D2 1589 [mm] Number of Blades Z 12 Installation angle of blades import b1j 38° Installation angle of blades export b2j 121.2° Width of impeller b 126[mm] Performance of centrifugal fan generally refers to the properties of the air transport in standard state.
By using turbulence model, the vortex viscosity coefficient can be simulated, and then it gains the general expression about the turbulent kinetic energy and dissipation : (6) (7) When neglecting the gravity effect, the turbulent production decided in the buoyancy is zero, therefore the formula (6) and the formula (7) become: (8) (9) In the formula, the turbulent kinetic energy production decided in the average velocity gradient is: Where is the module of average strain rate tensor which can be defined: In compressible flow the effect of turbulent flow expansion on total dissipation rate can be calculated according to the following equation: Where turbulence Mach number is defined as: The vortex viscosity coefficient is expressed as:
(10) The value about constant , , and the turbulence Prandtl number and of and given by B.E.Launder and D.B.Spalding are respectively: , , , , .

The aim of the process is to produce a fine grained microstructure for better ductility and controlled amounts of different micro-constituents to increase the strength and toughness simultaneously.
Comparison of microstructures of the samples quenched at same temperature in Fig. 1 implies that since the amounts of martensite in all conditions are approximately the same, the longer the partitioning time and higher the temperature, the higher the number and size of precipitates and thicker the bainitic laths are.
However, the particles cannot be seen in Fig. 1(i) which is heated at 640 ◦C for 50s probably because larger precipitates can be formed at the grain boundaries and be hidden there.