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Steel С+N, % С/N Initial state Tdef, °С σ0.2, MPa σmax, MPa εmax D, µm Grain shape* after strain e=0.51 Initial state After strain e=0.51 1 0.12 5 Quench. 1070 °С 1050 60 152 0.29 31±7.2 15±3,2 Eq 2 0.167 0.31 Quench. 1050 °С 1050 88 183 0.29 13±2.8 4±0,5 Eq 3 0.14 0.37 HTMT RSR, 65 %, 1070 ºC 1050 71 σss= 177 εssт= 0.37 8±1.3 4±0,8 Eq 4 0.18 0.38 Quench. 1050 °С 1050 66 145 0.15 17±3 9±1,7 Eq 5 0.08 - Quench. 1150 °С 1150 57 121 0.28 32±7 20±3 Eq + El 6 0.4 0.43 As-cast 1150 89 170** 0.28 - - - *Eq –equiaxed grain structure; El – elongated grain structure; Eq + El – partially elongated structure; ** (for ε = 0.28) Table 3- Parameters of hot compression diagrams at 970˚С (=1 с-1) and hardness after cooling with rate of 100˚С/s of medium-carbon structural steels Steel С+N, % C/N σ30*, MPa σ0,2, MPa HV, MPa C0.3CrMnNiNSi (8) 0,3 11 166 79 5970 C0.3CrNiMoNV (9) 0,301 230 167 69 6060 C0.4CrNiMoNV (14) 0,392 15 178 91 6300 C0.4CrNiMoNV (11) 0,413 3,4 172 82 6590 C0.5CrNiMoNV
Svyazhin et.al.
Svyazhin et.al.

AL-SULAIMAN, Saudi Arabia Prof.
AL-TURKI, Saudi Arabia Prof.
EL MANSORI, France Prof.

According to microelement analysis, gray grains contain the chemical compound Al – Si, white grains marked with arrows indicate silicides (Mn, Fe) mSin, and the rest are eutectic (α-Al + Si) [1].
The main reason for the low concentration of chemical Al-Si compounds in the hypereutectic alloy (α-Al + Si) - low wettability of aluminum by silicon, the wettability angle is less than 90o [12].
Nomoev, E.L.
Mamina et al., Prospects for the creation of foundry composite materials of the type Al-A12O3-SiO2, Liteinoye Proizvodstvo (Foundry.
Nomoev, E.L.

Lei Zhang et al. [19] proposed two criteria to select an optimal mother wavelet for image denoising.
The energy to Shannon entropy ratio criterion was also applied by Kankar et al. [22] for bearing fault detections.
Rafiee et al. [25] for gear faults diagnosis.
Rafiee et al. [29] proposed evaluation criterion (EC) as the mother wavelet selection criterion for biomedical signals.
El-Hawary, The most suitable Wavelet for steady-state power system distorted waveforms, Canadian Conference on Electrical and Computer Engineering. (2008)17-22

El-Fayad et al. [4] developed a model to simulate sandwich honeycomb armors by using (Ansys software) from ceramic materials (SiC) and Steel, used to resist various weapons.
Fadhil Hamzah et al. [8] developed a model to simulate body armor (by ANSYS 14 Explicit Dynamic).
Bocian et al. [10] studied and analyzed a shield plate made of Aramid fiber with a polymer.
El-Fayad, M.
El-Ashaa, and H.

An investigation by El-Tayeb [9] showed that reinforced short sugarcane bagasse polyester composite showed that the abrasive wear was sensitive to variation of load, fiber orientation and length, while it is less sensitive to sliding velocity.
Mulinari et al. [10] showed that treated sugarcane bagasse cellulose/HDPE composites present better tensile strength compared to its untreated sugarcane bagasse cellulose/HDPE.
Paul et al. [12] reported that sisal fibers/LDPE composites showed an increase in the dielectric constant with the increase of fiber loading and decrease with increase of frequency.
Similar trends have been observed by Yang et al. [18].
El-Tayeb; Mater.

Sharif el al. [7] have evaluated the feasibility of vegetable oil-based palm oil as a cutting lubricant through the use of minimum quantity lubricant during end milling of hardened stainless steel (AISI420) using coated carbide tool materials (TiA1N and A1TiN).
Shizuka et al. [8] investigated the use of nitrogen gas with MQL when turning carbon steel (AISI 1045) using both cemented carbide and cermet tools.
Zhao et al. [9] conducted their experiments for comparison between nitrogen-oil-mist and air-oil-mist to study the influence of different cutting media upon tool wear when high speed milling of titanium alloys using uncoated carbide.
El Baradie, "Cutting fluids: Part I. characterisation," Journal of Materials Processing Technology, vol. 56 (1996) 786-797

References [1] Rongling Li, Yajun Ge, Kuisheng Wang, el al.
[5] Mingxian Zhao,Qiu Yan WenquanRuan, el al.The influence of pH adjustment on biogas production from kitchen wastes by anaerobic fermentation pH [J].
[6] Bo Zhang, Hongzuhan Shi, Lili Zhang, et al.

Ahmad [5], Al Towaie [6], Amer [1], Avala [7], El Reidy [8], G Hernandez [9] also have conducted tests on solar cookers and concluded that solar ovens are environmentally friendly and cost effective devices for harnessing solar energy.
Al-Towaie, "Efficient Orientation Impacts Of Box-Type Solar Cooker On The Cooker Performance," Solar Energy, vol. 70, pp. 165-170, 2001
El-Reidy, "The performance of a solar cooker in Egypt," Renewable Eneryy, vol. 6, pp. 1041-1050, 1995
Ayu Wazira Azhari, Azami Zaharim, Mohamad Al Ghoul, "A New Approach For Predicting Solar Radiation In Tropical Environment Using Satellite Images – Case Study Of Malaysia," Environment and Development, vol. 4, pp. 373–378, 2008.

A. and El-Hadik, A.
El-Dessoukey, H., shaban, H.
I. and Al-Ramadan, H. (1995).
Hussain, A., Woldai, A., Al-Radif, A., Kesou, A., Borsani, R., Sultan, H. and Deshpandey, P.B. (1994), Modelling and simulation of a multistage flash (MSF) [6].
Al-Najem, M.A.