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Introduction SiC and SiC/SiC is bening discussed as structural material for plasma facing components in fusion reactor due to the low atomic number, high thermal conductivity, reasonable strength properties and excellent corrosion.
However, these studies are mainly aimed to enhancement of fracture toughness by using the α-β transformation of SiC grain.
But, α-β transformation of SiC grain occurs at the high temperature (1900 o C - 2000 o C) with grain growth.

Introduction Europium-doped lutetium(Lu2O3:Eu3+) is a promising active medium for solid-state laser due to the excellent physicochemical properties, including high effective atomic number (Zeff=63), high value of bulk density (9.4 g/cm3), high stability under irradiation, thermal and chemical stability, transparency in a broad spectral range (0.23-8.5 μm), and peak light emission at 612 nm (red emission due to the Eu3+ activator)[1,2].
The average grain crystal size increased (from 50, 88 to 152nm) with the increasing of temperatures (at 400, 600 and 800oC, Table 1).
Table 1 The lattice parameters of Lu2O3:Eu3+ powders sintered at different temperatures Average grain Lattice parameters Temperature size a b c α β γ Volume [nm] [nm] [nm] [nm] [°] [°] [°] [nm3 ] 400 ℃ 50 10.4516 10.4516 10.4516 90 90 90 1141.7 600 ℃ 88 10.4297 10.4297 10.4297 90 90 90 1134.5 800 ℃ 152 10.4137 10.4137 10.4137 90 90 90 1129.3 The luminescent spectra of the precursor sample and the sample sintered at 400 ℃ showed some similar emission peaks, but they were not the feature band of transitions of Eu3+ ion.
With increasing temperatures the emission peak became sharper, which was related to the increase of crystalline grain and the decrease of the defects.

Only the secondary particles were observed for PRMn-dry because the primary grain size was too small to observe under a SEM.
Specific surface area SBET of PRMn-Th(Th = dry, 300-800). current increase with increasing specific surface area because of an increase in the numbers of active sites.
We presume that the active sites on the pyrochlore grains with a good crystallinity have much higher activity than ones on the grains with a poor crystallinity.

Number Size/mm 1 2 3 4 5 6 7 8 9 10 24 44 64 84 10 124 14 Fig.6 The fracture morphology of the HIPed Ti6Al4V alloy Fig.5 Scatter gram of the main dimension of the bladed disk Tensile Property.
There exists an obvious "layered" phenomenon: the microstructure which is close to the mold appears a globular equiaxed grain with a uniform distribution along the mold.
The thickness of such grains is about 100μm; the microstructure which is far from the mold appears homogeneous strip α+β phases.
The rest same sign dislocations form the interface along the shear line, and the interface transferred with the diffusion so that the interface energy decreases and the globular equiaxed grain is finally formed.

. [%] 0.14 0.27 1.39 0.014 0.005 388 544 36 Smooth rectangular blocks were sampled from the plate in the longitudinal direction, and double thermal cycles were applied to for simulating the Intercritically reheated Coarse-Grained HAZ (ICCGHAZ) for offshore structures as shown in Fig. 1.
It mainly consists of ferrite-bainite, and the prior-austenite grain size was approximately 100μm.
In addition, Martensite-Austenite constituent (MA) particles were recognized along prior-austenite grain and bainite lath boundaries.
The minimum size of element was 20μm, and the total number of elements was more than 3,000.

The hardening effect of twins is limited, because it mainly comes from twins grain boundaries by holding back the dislocations gliding and dividing the matrix into smaller grains [7, 8].
On the other hand, twinning deformation can increase the number of slip systems through changing the crystalline orientation to enhance the uniform elongation in alloys [9].
When deformation is much more, there will be a lot of dislocations and second grain boundaries which strengthen the austenitic matrix.

Introduction Despite the development of science in high-tech fields, the achievements of nanotechnology, the development of new polymer materials and equipment, natural granular materials in the field of water treatment are still widely used for a number of reasons, the main of which is their cheapness and availability.
Experimental Studies To determine the quality of filter materials, special importance is attached to their density, intergranular porosity, the structure of the grain surface and the selection of the optimal granulometric composition.
Type of zeolite Filtration rate, l/h The content of elements, mg/g Ca Mg Na K Na-zeolit 12 36 28 15 - 25 26 - 36 42 - 48 8 - 13 10 - 15 11 - 13 70 - 87 66 - 72 65 - 70 0 0 0 Ca-zeolit 13 5.5 52 - 57 56 - 63 9 - 12 7 - 10 55 - 59 45 - 48 0 0 Tap water 36 - 40 12 - 13 59 - 69 0 The general conclusions of the authors of studies of different years regarding the zeolite of the clinoptilolite-geylandite series of the Honguruu deposit are as follows: · according to acid resistance, zeolite rocks of the deposits are located in the row: Honguruu > Sokirnitsy > Pegasus; · the surface available for adhesion and the grain shape coefficient are 1.6 and 2.0 times higher, respectively, than for quartz sand; · the best results in the filtration process are shown by the fraction of 1.2 - 2.0 mm; · the diffusion of sorbed calcium cations deep into the grain is slow, so the results of ion exchange are greatly influenced by the time of contact of water with the sorbent; · as a filter material

Upper plate Upper block Sliding plates Steel block Nitrogen cylinder Lower plate Lower block Clamping pad Die insert Sample Punch insert Mechanism of trimming defects generation To define the mechanism of sheared surface formation in conventional trimming process, we conducted a number of interrupted tests, which showed the initiation and development of original cracks from the upper trim steel.
The principal difference is in the grain structures formed in the two different processes.
In the standard process, the grains in the tongue area are very small due to the large plastic deformation from the sharp shearing edge indentation.
In the new process, the grain structure of the tongue is similar in structure to that of the offal other areas due to the dull upper steel shearing edge.

The performance of matrix is affected by the carbon content, and the material toughness is affected greatly by the number and distribution state of boride.
Moreover, heat treatment can refine the austenitic grain and make grain boundary element fully melt into matrix.
(2) After modification with RE, the grain of matrix decreases in size and the boride size also decreases.

Steel sheet piling inspection sampling locations The center microstructure of cold-formed steel sheet piling along the thickness direction is ferrite plus pearlite, which is shown in figure 3 with grain grade 8.5.
Comparative analysis of microstructure at the four positions inside and outside of the arc found that all curved lateral grain structure along the width direction is elongated, all curved arc of the inside of the grain structure is compressed along the width direction.
There are working hardening at varying degree on the position of number 1 and 8, and decrease of the corresponding elongation.