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According to electrochemical polarization data, some investigators reported that the synergistic effect of Sc and Zr increased the corrosion resistance of 7xxx series Al alloys [3,4], while some authors reported that the combined action did not reveal any improvement in the corrosion resistance of 7xxx series Al alloys [5].
Table 2 Electrochemical data from analyses of polarization curves.
The reduction of maximum corrosion depth indicates that the addition of Sc addition can enhance IGC resistance of medium strength Al-Zn-Mg alloy.
Discussion Wloka et al. [6] reported that the addition of Sc get the alloy less stable against corrosive attack on a macroscopic scale, which was attributed to the reduction in the protective property of oxide layer across the coarse primary Al3(Sc, Zr) particles/matrix interface.

The data for the voltage of 3 kV are cited from Ref. 23, and those for 4 kV were obtained in the present work.
A similar phenomenon may occur in tellurite glasses when the poling is performed at a temperature close to Tg, leading to a reduction of the dc electric field induced in the depleted region.
It is naturally expected that the reduction of the induced dc electric field at high poling temperatures is facilitated when the voltage is increased, leading to a decrease in optimum poling temperature with an increase in the voltage.
(1) A least squares fitting of Eq.(1) to the experimental data results in a = 0.789 for 3 kV and a = 0.718 for 4 kV.

Reduction of fatigue life due to fretting damage was also evaluated.
The speed of displacement controlled tension test was set to be 1 mm/min and a 50 mm Compositions, wt. % Ti Al V Fe O N 89 6.362 4.235 0.169 0.186 0.008 Stage 1 Air cooling 1050oC 980oC 2 hr Room temperature Air cooling Stage 2 540oC 4 hr Temperature Fig. 1 Heat treatment process of Ti-6Al-4V alloy (a) Rolled plate (b) 980o C AC, 540 o C AC (c) 1050 o C AC, 540o C AC 80 µm Fig. 2 Optical micrographs of heat treated Ti-6Al-4V alloy Table 1 Chemical compositions of Ti-6Al-4V alloy extensometer was applied to obtain the displacement data.
Microstructure 0.2% proof strength (Mpa) Tensile strength (Mpa) Strain (%) Reduction in area (%) Equiaxed 963 1003 22.5 31.7 Bimodal 982 1047 20.1 30.9 Lamellar 986 1048 5.4 12.3 Assessment of fretting fatigue limit of Ti-6A1-4V alloy.
The frequency of cyclic loading was set to be 1Hz up to 1000 cycles for stable data collection and then the frequency setting was changed into 15Hz thereafter at room temperature.

Therefore, magnesium products has been come to the fore since the industry has a demand for lightweight construction materials regarding legal requirements for CO2 reduction.
The bars with an initial diameter of 40 mm were rolled to an end diameter of 8 mm within 14 passes without using lubricant or reheating during the process, which corresponds to an area reduction of 96 %.
Technical data of the three-stand rolling mill at the Institute of Metal Forming Calibre sequence Pass Elongation λ Pass Elongation λ 1 1,09 8 1,22 2 1,25 9 1,38 3 1,48 10 1,21 4 1,21 11 1,33 5 1,50 12 1,16 6 1,19 13 1,19 7 1,43 14 1,05 Microstructural investigations.
Mordike (Eds.), Magnesium technology: Metallurgy, design data, applications, Springer, Berlin, Heidelberg, 2006

SCE but no reduction peak was observed.
It shows that the fluorine introduction on para and meta position of the termini phenyl group shows little difference to UV and CV data.
For the parent compound DP, OTS-treatment of substrate surface also showed a decreased characteristic data compared with the HMDS-treated device [12].
Srivastava, Effect of reduction of trap charge carrier density in organic field effect transistors by surface treatment of dielectric layer, J.

The reduction ratio was 81:1 as the inner diameter of extruder barrel is 125mm.
The tensile properties come from the average data of three tensile tests for each type of high-purity Mg.
The average value of mass loss data for each type of high-purity Mg come from 3 parallel specimens.
The improved YS of as-drawn Mg seems to be attributed to its refined grains based on the Hall-Petch relationship [23], while the reduction of EL should be responsible by the competitive result of grain refinement and work-hardening caused by the cold deformation, the former benefits to increases the ductility [9] while the latter reduces the EL due to the existence of the high-density dislocation[24].

Consequently, reduction in the coating's hardness and wear resistance were discovered.
The amount of TiB2 in the coating is interesting, and there is also little data studied, especially in the application of high velocity oxygen fuel (HVOF) coatings.
In addition, transfer films also influenced on the reduction of abrasive wear in the tests.

This apparatus consists of electrical furnace, GH49 puncher, ceramic ball, specimen holder, and associated instrumentation for data acquisition.
All the testing data were automatically recorded by PC.
Table 2 gives selected SPC testing conditions and results datum.
In particular, the specimens tested in air have an increase in minimum creep rate and a reduction in time-to-rupture (Fig.2a, b and Table 2).

Time Series Analysis Time series is defined as the time order of collection of observations is associated according to the time changes and data sequence [3].
Table 1 Biogas generator temperature for five days times biogas generator temperature Monday Wednesday Friday Saturday Sunday 1 57.73 58.19 57.96 57.63 57.73 2 58.84 57.76 57.98 55.94 58.84 3 57.25 58.28 58.36 56.35 57.25 4 57.69 56.59 57.97 56.56 57.69 5 56.89 57.89 57.45 57.14 56.89 6 58.78 58.36 57.12 57.58 58.78 7 59.62 58.98 56.69 58.35 59.62 8 58.53 59.34 57.67 58.96 58.53 9 57.15 58.25 57.99 59.19 57.15 10 59.16 58.37 58.69 59.67 59.16 11 58.24 59.24 59.15 58.78 58.24 12 58.96 58.35 58.56 58.10 57.67 Use the former 59 data and time series analysis methods to predict the 60th data, and then compare forecast data with actual data to determine time series analysis methods for reliability indexes of the rolling forecast voltage effectiveness.
Dynamic data processing theory and methods - time series analysis [M].
Dynamic data system strategy time series modeling [J].
Dynamic data processing theory and methods - time series analysis [M].

The data set X = {x1，x2，…，xj，…，xn} is divided into C type.
Firstly, the collected data is processed by principal component analysis.
According to the formula (3), the main element of the training sample data is ti（ti∈Rp，i=1, 2，…, m）.
The data is converted 12 to 4 dimension, so the data of feature extraction for fuzzy C means clustering algorithm can greatly reduce the computational complexity and the amount of calculation, so as to improve efficiency of the fault diagnosis.
Because of the principal component analysis for feature extraction, data dimension reduction can reduce the amount of calculation.