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Some high damping alloys, have been already developed, such as Mn–Cu alloys [1, 2], Cu–Zn–Al alloys [3], Ni–Ti alloys [3, 4], Fe–Cr–Mn alloys [4,5], Fe–Al alloys [6, 7], and Mg alloys [8].
For the molding were used material of high purity (Fe: 99.99%, Mn: 99.95%, Si: 99.9 and Al: 99.99) and FeSi and FeMn master alloys.
The alloys proposed for obtain were: alloy1: Fe15Mn3Si (S1) (using for elaboration 139.4g Fe, 25.5g Mn and 5.1g Si), Fe15Mn3Si3Al (S3) (using for elaboration 150.1g Fe, 28.5g Mn, 5.7g Si and 5.7g Al) and Fe20Mn3Si3Al (S2) (using for elaboration 125.8g Fe, 34g Mn, 5.1g Si and 5.1g Al).
S3 el. list 1 80.40 76.71 15.16 14.71 2.37 4.51 2.06 4.07 - - Alloy S3 el. list 2 80.79 76.36 13.76 13.23 3.03 5.70 2.41 4.72 - - EDAX Error [%] 1 0.4 0.22 0.15 0.2 The EDAX detector error is small for all the elements, even for iron which is in a high percentage in the alloy, and can explain, at least partially, the chemical composition difference between the proposed alloy composition and the results obtained using EDS analyze technique.
Prashantha, Evaluation of shape memory effect and damping characteristics of Cu—Al—Be—Mn shape memory alloys, Perspectives in Science. 8 (2016) 244-246

The smallest "steady" values EL = 4 - 5% were obtained in the case of ARB, and the maximum EL = 18% was obtained at MD.
The most favorable combination of strength and plasticity was obtained in copper after MD (UTS=460 MPa, EL ≅ 18%).
The best combination of the strength and plasticity of copper was achieved after MD (UTS= 450 MPa, EL ≅ 20%). 3.
Kopylov et al.: Processes of Plastic Structure Formation in Metals (Nauka i Tekhnika, Minsk, Belorus 1994) (in Russian)
[4] G.Salischev, R.Imaev, V.Imaev et al., in: Investigations and Applications of Severe Plastic deformation, edited by T.C.Lowe and R.Z.Valiev, NATO Science Series, 3.High TechnologyVol. 80, Kluwer Academic Publishers, Dordrecht, (2000)

Ouigman et al. [17] also carried out an analysis of the heavy metals present in RDFs.
This technology is not yet exploited in our country as shown by Aboudaoud et al. [22].
El Morjani, M.
El Ouinani, A.
El Kourdi, Souad Abderafi, M.

For the EL analysis the devices have been tested at ISD=1 A, VDS= -3.1 V and VGS=-5 V.
On both device EL images are observed trapezoidal shaped stacking faults.
The amount of area covered by the SF in the region sampled by EL matches quite well to the Rdson drift.
Image a Image b EL conditions: ISD=1 A, VDS= -3.1 V, VGS=-5 V Rdson drift ~ 8.8% Rdson drift ~ 20% Area covered under EL: 10% Area covered under EL: 13.5% b.
Konishi et. al.

Abou El-khair et al. (2011) metallurgical, mechanical and thermal properties of squeeze cast SiC, ZrO2 reinforced composites [9].
They are Pure Al, Al with 5% Ni, Al with 10% Ni, Al with 5% Ni (later subjected to squeeze casting), Al with 10% Ni (later subjected to squeeze casting) The temperature was kept at 973 K (when Ni is added) and 1123 was the maximum temperature.
Mechanical Properties and metallurgical properties are compared to Stir casting (Al 5% Ni, Al 10% Ni) and squeeze casting (Al 5% Ni, Al 10% Ni) and with the Pure Al.
Abou El-khair, A.
El-Sheikhb, “Microstructure, thermal behavior and mechanical properties of squeeze cast SiC, ZrO2 or C reinforced ZA27 composites”, Materials Science and Engineering A, 528 (2011) 2353–2362

And it is found in abundance in eastern Algeria, especially Ain Mlila-Wilaya of Oum El Bouaghi-Algeria.
The constituents of these carbonates are Ca, Mg, C, O, Al, Si, Fe, Ba, F, and Sr, analysis by XRD, and Raman, show that in addition to CaMg(CO3)2, we may have calcium carbonate.
This mineral is extracted from the region of Djebel Taioualet, Ain Mlila-Wilaya of Oum el Bouaghi-Algeria ), and operated by The Algerian society of Aggregates S.P.A.
We can also confirm the presence of the elements: Ca, Mg, C, O, Al, Si, Ba, Fe, F, and Sr.
Al.

LEDs with a mesa-like edge contour were fabricated by a conventional technology, using Al evaporation in vacuum on the front and rear surfaces of the samples.
The emission from the front diode surface free from Al was focused onto the entrance slit of the monochromator.
When measuring the quantum efficiency, we used the evaporation of Ni (instead of Al) on the rear surface.
Both EL lines are associated with the formation of structural defects.
The EL rise and decay times are less than 10 µs in the diode.

This requirement is met at the phase boundary (Al)+Al9FeNi/ (Al) +Al9FeNi+Al3Fe.
Experimental alloys were prepared in an electric furnace in graphite–chamotte crucibles using 99.99 and 99.5% pure Al, 99.9% pure Zn, 99.9% pure Mg, 99.9 pure Cu and master alloys (Al–20%Ni, Al–10%Fe, Al–10%Mn).
Mechanical properties of experimental alloys HT1 Al6Zn4Ni Al7Zn1Ni Al6Zn0.5Ni Al5Cu YS, MPa UTS, MPa El, % YS, MPa UTS, MPa El, % YS, MPa UTS, MPa El, % YS, MPa UTS, MPa El, % T4 316 471 7.4 320 440 5.6 270 415 10.5 130 290 18.0 T6 518 572 7.1 536 570 1.2 485 512 3.6 293 422 11.5 1heat treatment Technological effectiveness of an alloy Al6Zn0.5Ni is the best among all considered alloys that allows to get shaped castings by various casting methods from it (Fig.6).
Bley, et. al., An Influence of alloy composition and heat treatment on precipitate composition in Al–Zn–Mg–Cu alloys, Acta Mater. 58 (2010) 248–260
[5] Yanxia Ii, Ping Li, Gang Zhao, et. al., The constituents in Al–10Zn–2.5Mg–2.5Cu aluminum alloy, Mat.

Gordon and El Bassayouni [12] studied grain growth in bulk samples of zone refined Al with Fe contents of 0.05 atomic ppm.
Assuming that all the Fe atoms reside at the boundaries, the iron content of the boundaries for Gordon and El Bassayouni’s bulk Al samples and for the stagnant structure of the 100 nm-thick Al film can be calculated.
The total number of Fe atoms in the 100 nm-thick Al film is calculated as 8.73 × 1016 cm-3 and that for the bulk Al sample of Gordon and El Bassayouni is calculated as 3.01 × 1015 cm-3.
Thus, the grain boundary surface atom fraction of Fe in the stagnant structure of the 100 nm-thick Al sample is more than 40 times lower than for bulk Al samples of Gordon and El Bassayouni.
El Bassayouni, Transactions of the Metallurgical Society of AIME, Vol. 233 (1965) p. 391.

El-Bakkari, A.
El Moussaouy, M.
El Moussaouy, L.
El Hadi, M.
El Hadi, A.