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This study asks a number of questions based on the above and analysis of Kinmen’s overall environment.
(roughly 276ha), Liquidambar formosana Hance (roughly 129ha), and a small number of Swietenia mahagoni and other deciduous trees
In terms of grains, firs have straight and even grains; firs have a medium texture while the other two have a rough texture; firs have light yellowish brown heartwood and light yellows to yellowish white sapwood, acacia has dark red brown heartwood and yellowish brown sapwood, and china tree has red brown heartwood and yellowish white sapwood; Brinell hardness Brinell hardness is defined as soft wood under 3.00 (kgf/cm2); soft hardwood is 3.00 and above but less than 4.00 (kgf/cm2); medium hardwood is 4.00 and above but less than 5.00 (kgf/cm2); hard hardwood is 5.00 (kgf/cm2) and above.
After cross analysis, we know that firs are extensively used because they have straight and even grains, medium texture, and even though firs are softwood, they dry fast and do not easily curl, and are easy to process and paint.
The study found that furniture materials in Kinmen that are most easily used include firs, bamboo, china tree, and acacia, in which firs have the best properties, including softwood, straight and even grains, and easy to dry, process and paint, and were made into the most types of furniture.

One factor that could lead to the delamination is the occurrence of grain boundary embrittlement that can be a result from the AlN inclusions along the grain boundaries [10,11].
In essence, the number of AlN inclusions was comparatively very high such that they were likely to have a deteriorating effect on the properties of the steel.
When nitride formers other than aluminum were omitted, nitrogen contents as low as 30 ppm (0.003%) in Al-bearing led to the formation of a high number of AlN inclusions, which decreased the tensile ductility radically.
One explanation can be that AlN inclusions are aligned along the grain boundaries and these inclusions affect delamination during the impact testing.
Kömi, Effect of deformation and grain size on austenite decomposition during quenching and partitioning of (high) siliconaluminum steels, Mater Charact. 171 (2021) 110793

This is despite the fact that the orientation of grains in molten welds is not randomly distributed and the desire for a particular orientation can affect most important properties of welds such as grain morphology, grain distribution, grain properties, mechanical properties and corrosion resistance. [4] Duplex stainless steels are mainly used in the manufacture of pipelines in the offshore oil and gas industry, chemical tankers of ships, construction of bridges in countries with negative temperatures, pipelines in desalination plants, etc.
In figure 9, can be seen the microstructure of the naval carbon steel, code EH 36, having ferrite-pearlitic structure in rows, score 5-6, grain size of 10.
Fig. 8 Welded joint - PC – BM1 Fig. 9 Welded joint - PC – BM2 Fig. 10 Welded joint - PC – HAZ1 Fig. 11 Welded joint - PC – HAZ2 Fig. 12 Welded joint - PC – DM Fig. 13 Welded joint - PF – BM1 Fig. 14 Welded joint - PF – BM2 Fig. 15 Welded joint - PF – HAZ1 Fig. 16 Welded joint - PF – HAZ2 Fig. 17 Welded joint - PF – DM BM1 – duplex steel S31803, twinned and fine austenite + ferrite polyhedral BM2 – naval steel EH36, ferrite-pearlitic structure in rows, score 5-6, grain size of 10 DM – deposited material, columnar structure HAZ1 - HAZ of duplex steel S31803, austenite polyhedral HAZ2 - HAZ of naval steel EH 36, superior bainite Mechanical Testing Results In order to validate the welding between duplex stainless steel and naval carbon steel, a series of destructive tests were performed.
- The use of a larger number of rows for the realization of the welded joint leads to the appearance of a wider HAZ, determined by the multiple superimposed thermal cycles, but which does not significantly affect the properties of the welded joint
References [1] ISO 4063:2009 – Welding and allied processes – Nomenclature of processes and reference numbers [2] Investigations on structure–property relationships of activated flux TIG weldments of super-duplex - austenitic stainless steels, Materials Science & Enginnering A, K.

Fine Grain Concrete on Mixing Water Activated in Cavitation Permanent Magnet-Type Apparatus M.A.
The authors obtained fine grain concrete based on the mortars of additives-electrolytes undergone mechanic magnetic activation and characterized by improved compression and bending strength and enhanced freeze-thaw resistance.
Thus, the objective of the present paper is seen as the study of mechanism of combined influence of mechanical and magnetic treatment of mixing water containing inorganic additives on physical and mechanical properties of fine grain concrete.
The number of cycles has been determined by frequency of convolutions of rotary-activator performing as a pump.

The importance of the fatigue crack initiation is enhanced in the domain of low amplitudes and high and ultra-high numbers of cycles to fracture.
These bands were intensively studied by a number of researches on single and polycrystals (see e.g. recent review paper [2].
Fig. 1 shows typical dislocation arrangement in a grain of f.c.c. 316L stainless steel and b.c.c. ferritic stainless steel cycled with low constant plastic strain amplitudes.
Surface relief of a typical grain of both steels at approximately half of the fatigue life is shown in Fig. 2.
They steadily grow provided plastic strain is applied to the particular grain until a crack is developed in the PSM.

In some works [4 - 6] it was shown, that the application of rapid heat treatment (RHT) into the singlephase β-field (at rates of the order of tens or even hundreds of degrees per second) can be used to form unique microstructures comprising relatively fine β-grains (≤ 30-50 µm) with fullytransformed intragrain α+β lamellae/laths.
Local/selective heat treatment can be accomplished using a number of well-known high-energy-density methods such as those based on electromagnetic induction, electron-beam, infrared, and laser heating [8 - 10].
At the same time formed during welding deposition macro- and microstructures were characterized by presence of several zones clearly distinguishable in grain size, phase composition and intragrain features (Fig. 9a, Figs. 10a and 10b).
Weld-deposited layer had β-grains with average size of about 350-500 µm (Fig. 10a) having martensitic α" intragrain microstructure, whereas Heat Affected Zone (HAZ) was characterized by increased up to 100-150 µm β-grains with metastable β-solid solution inside, whereas base material remained in two-phase α+β globular condition (Fig. 10b).
Belov, Ultrasonic and vibromagnetic treatment of metals, Metal Science and Heat Treatment, Volume 13, Number 3 / March, 1971, p. 261

Two steps clean up procedure which consists of grain confidence index standardization and neighbour phase correlation was applied to the raw EBSD data in the TSL software.
In this procedure minimum grain tolerance angle of 5°, minimum grain size of 2 pixels and min confidence index CI >0.1 were chosen.
The bainite fraction was quantified by means of the method developed by Wu et al [7] with the assumption that the distribution of the number distribution of IQ-values is composed by a superposition of Gaussian peaks originating from the separate contribution of ferrite and bainite.
The results of this procedure are shown in Fig. 2 where the bainite fraction was associated to the number of pixels in the area locked between the abscise axis and the small Gaussian peak.
After taking into account the pixels that belong to the high angle grain boundaries (misorientation >15°) and their vicinity, the bainite fraction was determined to be 28%.

It is also still not enough to understand the main intrinsic and environment factors affecting the formation and propagation of cracks for the soils are high complex and conditioned by a large number of variables[2].
Laboratory grain analyses suggest that for the soil with largest grain size smaller than 60mm, fine particles (grain size smaller than 0.075mm) and clay particles (grain size smaller than 0.005mm) account for 4.8% and 1.4%, respectively (Fig.1).
Grain size distribution cure of the original soil sample Fig.2.
Grain size distribution cures of the soil samples in simulation experiments Image processing To make quantitative description of cracking based on the surface identification, techniques of digital image processing were used.
Therefore, a large number samples could exclude the effect of heterogeneity of particle size and particle distribution on soil cracking.

The interlayer coupling between the local moments in the grain boundary was found to explain the permanent magnetic behaviour of graphite.
This observation supports the model [10] that magnetic areas are located at the grain boundaries of HOPG.
This is an indication of strongly perturbed ABAB stacking with a significant number of c-axis translation faults.
Thus, Bernal stacking provides the intrinsic discriminating mechanism [42] which creates the difference between the numbers of defects in two sublattices.
It appears however that graphite does need different numbers of defects in two positions to become magnetic.

At the same time the distribution of the dislocations within the grain is not uniform.
A well-developed sub-grain structure with bright sub-grain boundaries and dislocations walls can be seen in the TEM-images (Fig. 3).
The sub-grain boundaries can be described as the areas of the very high dislocations density.
Well-developed sub-grain structure can be seen at the electron-microscope images.
However, for a variety of practical applications engineering steels are used under condition of alternating external elastic loading and in many cases the total number of loading cycles is extremely high.