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The calcite content of clay minerals is relatively low, but in those cases when calcite grains are ground finely, size smaller than 1 mm, spottiness caused by enrichment of free lime cannot be expected.
Composition of the prepared samples 1. 100.0 % 0.0 % 2. 97.5 % 2.5 % 3. 95 % 5 % 4. 92.5 % 7.5 % 5. 90 % 10 % 6. 87.5 % 12.5 % 7. 85 % 15 % 8. 82.5 % 17.5 % 9. 80 % 20 % Sanded clay Clay 1 Number of mixture Composed mixes were ground in a pan mill for 20 minutes as it is usual in industrial practice.

The intrinsic stress either originates from strained regions within the films (grain boundaries, dislocations, voids, impurities, etc.) and at the film/substrate (lattice mismatch, different thermal expansion, etc)[4].
As shown in figure 7, the number and position of the X-ray diffraction peaks of the annealed TiN coating was almost the same with that of unannealed TiN coating.

A large number of people flooded into Yuanshui drainage basin which is located at the edge of the Chu State through the Yuanshui waterway.
It was not only the most important channel to connect the southwest but also the major channel to transport military supplies, water transport of grain to the capital and civil goods and materials.

Although all these methods require sophisticated and costly equipment as well as absolute observance of melting temperature mode specifications, they promote an increase of the number of crystallizing nuclei and grain refinement as compared to impurity modification methods whose effect depends on a uniform distribution of modifier elements in a melt, in some cases it is limited in time, and the modifying elements themselves may affect a chemical composition of an alloy.

The most common cracks encountered in CSEF materials are [5]: - Hydrogen cracking - Stress corrosion cracking (especially if the welds are subjected to moisture after welding) - Cracking (due to poor ductility) during transportation of field erection (this has occurred on many occasions in T91 to P91 tube to header connections in HRSGs) - Accelerated "Type IV" cracking caused by elevated magnitude transverse weld residual stress (Type IV-cracking nucleates and propagates in the intercritical, fine grain region of HAZ) For the case of P91 and P22 weld joint that is not subjected to PWHT, it will have un-tempered hard martensite (with Hardness >400 HV), high residual stress and may have elevated levels of hydrogen.
Fig. 2 Post Weld Heat Treatment carried out on weld between A335 P91 and A335 P22 Pipes During PWHT of a dissimilar metal weld between materials of two different P Numbers which require PWHT at different temperatures, the PWHT temperature specified was for the material requiring higher PWHT temperature.

Treatment at high temperature, respectively 1050°C/1h (fig.2c), makes the structure with very big grains, each of them having inside many lamellar distribution of a and b solid solution.
ACKNOWLEDGMENTS This work was supported by Romanian POSDRU project number 60203.

The mechanical properties of Al-Si alloys depend, besides the Si, Cu, Mg and Fe-content, more on the distribution and the shape of the silicon particles, the grain size, dendrite arm spacing, porosity distribution or profile, size, volume and morphology of intermetallic phases [1-4].
A number of factors define the metallurgical structure in Al-Si castings and that determines the properties.

After completion of the forging process, billet model will be formed as a ring internal gear, which is designed with parameters of tooth number 36, module 0.15, diameter 9mm, height 4mm, addendum diameter (inner diameter) 5.052mm.
Chang, Superplastic micro-forming with a fine grained Zn–22Al eutectoid alloy using hot embossing technology, J.

It depends on a number of factors such as the pH value of the solution, the degree of swelling of wood filler particles, the temperature, the presence of active groups, etc.
It is known that the hydration of cement grains with a wood filler is greatly different from the normal concrete.

Currently, a large number of different methods of surface modification are used in production.
The underlying hardened layer, the thickness of which can reach up to 1 ... 1.5 mm, depending on the technological modes of processing and the means of technological equipment, is a ferrite at the grain boundaries of which there is a small amount of iron and tungsten carbides.