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After initiation, the crack propagates by a cleavage mechanism through the small ferritic matrix areas in between the graphite nodules, which measure only one or a few grains.
Thus, a number of microscopic pop-ins are superimposed and cause a macroscopic elastic-plastic appearance of the force-time record, where single pop-ins may not be observed.

Moreover, the Mössbauer spectra analysis performed for the alloys annealed at temperatures closed to temperature Top shows that there are no nanokrystalline grains till temperature of 720 K [10].
The calculated radii and numbers of coordintion spheres were compared to the structures characteristic for the Fe-B-Nb atom composition present in alloy after annealing.

Under semisolid region a number of processes can take place simultaneously, resulting on a particular microstructure formed by spheroids of solid surrounded by a liquid matrix.
It is clearly visible a non-dendritic microstructure when solid fraction increases due to dendritic grain growth.

In these days the minerals in itself is not valuable, but bio-oxidation of pyrite is economically very important for pretreatment of gold ores, because tiny gold grains are often present in pyrite as well as arsenopyrite.
Laser Raman spectroscopy is much useful for mineralogical identification compared than FTIR because the information in low wave number region is available [3].

Today, the method of artificial selection and weight detection to detect defects in the process of plastic blister packaging may product quality problems ，such as the defecting of the drugs, lacking of grain and foreign body, may result in undetected and false detection, resulting in some unqualified products can not excluded timely, it is difficult to popularize them.
The algorithm needs double loop, we can get the total cumulative number is: (10) The two-dimensional Otsu method has a large amount of calculation, the total computational complexity is.

These areas are important bases for grain production, and the research on the spatial and temporal variation of precipitation has practical significance[2].
Empirical mode decomposition method can make non-stationary data be processed smoothly, and make the complex signal be decomposed into a limited number of intrinsic mode function (IMF).

Introduction Ultra High Performance Concrete (UHPC) is ultra-high-grade concrete with a fine-grained macrostructure and high consistency.
This highly advanced and sophisticated material offers a number of interesting applications such as the production of facade panels, which more promotes abroad.

Table 2 List of heat treatment regimes Regime Description Soft annealing Heating to 790°C/11hrs hold/cooling in furnace 1×15 s Heating to 780 °C/15s hold/air cooling 2×15 s Heating to 780 °C/15s hold/air cooling to 680 °C/heating to 780 °C/15s hold/ air cooling 3×15 s Three times heating to 780°C/15s hold/intermediate air cooling to 680°C, final cooling on air Initial microstructure was composed of lamellar pearlite with small amount of secondary cementite on prior austenite grain boundaries.
Hardness of the steel decreases gradually with number of temperature cycles around A1 temperature.

It may be caused by the formation of average grain size of 30-60 nm crystallines with strong hardness, reducing domain-wall motion of longitudinal direction. 1 10 100 1000 10000 0 5 10 15 20 25 µ' Frequency (kHz) measured data fitted curve µ'dw µ'rot µdw µrot fdw frotµinf (a) 1 10 100 1000 10000 0 5 10 15 20 25 µ' Frequency (kHz) (b) µdw µrot fdw frot µinf Fig.1.
Journal Title and Volume Number (to be inserted by the publisher) 3 -40 -30 -20 -10 0 10 20 30 40 0 10 20 30 40 50 60 70 80 90 �Z/Z (%) Magnetic Field (Oe) Increase Decrease (a) -40 -30 -20 -10 0 10 20 30 40 -5 0 5 10 15 20 25 30 35 40 45 50 -40 -30 -20 -10 0 10 20 30 40 -1 0 1 2 3 4 5 �Z/Z (%) Magnetic Field (Oe) �Z/Z (%) Magnetic Field (Oe) (b) Fig. 3.

In this study, based on a large number of domestic and foreign literatures and previous studies[3,4,8], and combined with the characteristics of H-acid production wastewater, Fe was chosen as the active component of the catalyst prepared by impregnation method, and it was applied in catalytic wet peroxide oxidation (CWPO) treatment of H-acid wastewater, with COD removal rate as the main evaluation index of catalyst activity, the effect of carrier particle size, concentration of impregnation solution, calcination temperature, and calcination time on the activity of catalyst were studied in detail, then the preparation process for the catalyst Fe/SiO2 was optimized.
The calcination temperature can change the pore structure, grain size, and chemical state of the catalyst.