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However, crystal grain of silicide phases in Nb-Si composites produced by arc-melting is very coarse, which is harmful to mechanical behavior.
Table 1 Volume fraction of the phases in three samples Volume Fractions of phases (%) Sample Number Nbss (Nb,Ti)5Si3 1 62.37 37.63 2 62.76 37.34 3 60.06 39.94 Fig. 3 Compressive stress-strain curves at 1250℃.

The explicit integration scheme is selected, rather than an implicit scheme, primarily because this is a wave propagation problem, the finite element mesh contains a large number of elements.
Finite element model Fig. 4 shows the vertical stress history at four representative locations surrounding pile P1: A1 on the pile cap, A2 on the coarse-grained fill layer, A3 on the soft clay layer and A4 below the pile tip (see Fig. 1a).

The grain was a bit became small.
When the addition of Fe was greater than 0.6%, the number and size of the impurity which included Fe became greater enough to make the bending condition worse.

Fig.3 The cutting location of the sample a b Fig.4 The inclusions of parabolic surface and the microstructure c d Fig.5 The morphology of inclusions Ⅱ Element Wt% At% OK 28.40 50.03 AlK 01.26 01.32 SiK 25.56 25.65 TiK 00.84 00.49 VK 00.84 00.46 MnK 36.12 18.53 FeK 06.98 03.52 Fig.6 EDS analysis on square frame of area Ⅱ From Fig.4 (a),it can be seen that there are a large number of gray-black inclusion defects with irregular shape and sharp corners near the crack surface area.Fig.4 (b) shows that the microstructure is mainly of ferrite and pearlite, and ferrite in the grain boundary takes the shape of the distribution network, which is the reason of the surface decarburization.

Introduction Solid rocket motor (SRM) survivability depends upon the structural integrity of the grain and all bonded interfaces.
At present, large numbers of experimental study on adhesive system has been carried out [1-2].

The intensity of ZnO (002) peak in the XRD pattern mainly depends on the number of grains with the c-axis orientation in the ZnO films.

Non-magnetized plasma medium, has the following index recursive features: (5) Non-magnetized plasma Iterative equation recursive convolution (6) Simulation experiment (1) FDTD simulation model of the non-magnetized plasma According to numerical stability and numerical dispersion of meshing requirements of FDTD simulation experiments, we set the scale as 0.5×0.5nm2, grid number as 200×200, nanoparticles medium was gold, taking the plane circle model, the particle size is taken to 20nm .
Fig1(a) Raman enhancement plane under visible light irradiation(632nm) Fig1(b) Raman enhancement plane under Terahertz wave irradiation(9.50THz) As shown from Fig. 1(a) and (b), plane wave incident spectral enhancement factor (|E/E0|2) concentrated at the junction of the two nanoparticles and at the grain boundaries，and the enhanced junction reflects the influence of the interaction of nano-particles under light irradiation of the spectrum.

It is probably due to the size of the grains, which is larger for potato starch.
For the concentrations of 30 and 40% of potato starch (Fig. 3 (c) and (d)), a large number of pores of diameter around 10μm were observed.

The vacuum condition can prevent or limit the oxidation and the fast heating rate along spark and plasma condition can help to control the reactions between Mg and other phases including suppressing coarse growth of formation phases and crystal grains [3-5].
A large number of hole-like defects (voids) can be seen in Fig.5 (a).

Based on the sediment continuity equation (Eq. (4)), the bed level change dz/dt can be obtained in a number of ways [12]
Input parameters used are bathymetry data, water surface elevation, wind, wave, current, and grain size of sediment.