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The total content of the alloying elements in the alloy should not exceed the aluminum equivalent value as given in the following empirical relation: Aluminium Equivalent = Al + Sn/3 + Zr/6 + 10(0) ≤ 9.0 The alloy is rated among the difficult to forge alloys and is characterized by need of high unit pressure, due to higher aluminum equivalent in the alloy and is prone to cracking during processing [1].
Table 1 Chemistry of Ti5Al2.5Sn-ELI alloy billets used for processing of hemispherical dome Elements [wt%] Al Sn C Fe O N Fe+O H Ti Specified 4.7-6.5 2-3 0.05 (Max) 0.25 (Max) 0.12 (Max) 0.035 (Max) 0.32 (Max) 0.0125 (Max) Balance Achieved 5.3 2.78 0.021 0.044 0.0855 0.0087 0.1325 0.008 Balance Table 2 Mechanical properties obtained for Ti5Al2.5Sn-ELI alloy billets (in annealed condition, on 100 mm square forged and annealed blocks at 300K) for hemispherical dome Type UTS [MPa] 0.2%YS [MPa] El [%] RA [%] Impact strength (Charpy V Notch) [Kg-m/cm2] Specified (Minimum) 690 620 10 15.0 2.8 Achieved -Longitudinal 827-857 742-752 19-21 46-53 7.6-8.1 Achieved-Transverse 832-833 761-769 20 47-48 6.0-8.3 From Table 1, it can be seen that elements are within the specified limits.
Table 4 Mechanical properties achieved on forged and annealed Ti5Al2.5Sn-ELI alloy hemispherical dome at 300K Dome location 0.2%YS [MPa] UTS [MPa] EL [%] RA [%] Impact strength (Charpy V Notch) [Kg-m/cm2] Top-Trans 760-775 822-840 17.0-19.0 31.3-47.0 4.5-4.8 Top-Long 789-793 829-833 17.0-17.5 43.0-43.2 5.2-5.5 Middle- Trans 769-777 816-826 17.0-19.5 36.0-47.0 4.1-4.7 Middle- Long 762-784 820-842 19.0-20.0 43.2-47.0 4.7-5.2 Bottom- Trans 760 -798 822-853 17.5-18.5 43.2-43.8 4.0-4.1 Bottom- Long 776-811 829-846 16.5-17.5 39.4-47.5 4.5-4.8 Where: Long and Trans stand for longitudinal and transverse direction respectively Domes have met ultrasonic test requirement of Class A1 (1.2 mm diameter FBH) level.
Table 6 Effect of cross head speed on tensile properties Sl No UTS [MPa] 0.2% YS [MPa] El [%] RA [%] Cross head speed Test temp 1 1230 1153 9.7 23 2mm/min 77K 2 1244 1201 9.5 27 2mm/min 77K 3 1269 1126 17.7 23.7 0.5mm/min 77K Stress–strain diagram obtained at 20K for two specimen’s configurations are included in Figs 3a and 3b.

Al-Jwaid1,a, Ahmed S.
Al-Ansari, V.
Al-Huqail, M.
Al-Zeadei, A.K.
Al-Jwaid and Y.

Comparative Analysis of Flax Fiber-Reinforced Composites and Hybrid Configurations for Enhanced Low Energy Impact Performance S.El Khoury Rouphael1,2,3,a, T.Q.Truong-Hoang1,b*, G.
Habibi et al. [9] investigated the post-impact tensile properties of a unidirectional-mat flax/epoxy composite.
Velmurugan et al. [11] investigated the layering pattern arrangements of a hybridized flax/coir fiber based bio-epoxy composites.
Touchard, F. and al. 2014a.
El Khoury Rouphael, G.Lebrun, F.Touchard, T.Q.Truong-Hoang, 2023.

EL-Elamy 1, c 1 Department of Production Engineering and Mechanical Design, Faculty of Engineering, Menoufiya University, Shebin El-Kom, Egypt a ghoneam22000@yahoo.com, bahamda_59@yahoo.com, cmamdouhelimi@yahoo.com Keywords: adhesive-bonded joint, finite element, damping, composite structure ultrasonic test Adhesively bonded joints are used extensively in various industries.
However, as with other fastening methods, adhesive bonding, or more popularly, "chemical welding", has its advantages and limitations which must be considered by modern industrial designers and engineers when choosing between nailing, bolting, riveting, brazing, welding, or bonding to fasten parts together, presented by Kaya A. and et al [1].
The effects of structural parameters and material properties of the adhesive layer on the system model loss factors and resonance frequencies were also studied by Shin and et al [9], Vaziri and et al [10].
Maher, EL-Soaly, S.
El-Batal: Physicochemical studies of phosphate based P2O5-�a2O-CaO-TiO2 glasses for biomedical applications, Journal of NonCrystalline Solids Vol. 353 (2007) p. 77

Al-Bsharat: J.
Wang, et al: J.
El-Axir, O.
Al-Bsharat: Wear Vol. 199 (1996), p. 1-8 [7] M.
El-Axir, O.

Busto et al. [6] reported that the calcination temperature is the variable that affects the acidity distribution.
This phenomena is explained by Föttinger et al. [20] that the relative amount of Brønsted and Lewis acid sites depend on the surface concentration of sulfate.
On the other hand, Busto et al. [7] suggested that total acidity is decreased as the calcination temperature is increased.
Said, M.M.A El-Wahab, M.A.
El-Aal, The catalytic performance of sulfated zirconia in the dehydration of methanol to dimethyl ether, J.

Liquid sorption and solubility values are not in agreement with Vuorinen et al. [10] and El-Hadary et al. [11].
El-Hadary, J.L.
[12] A.L.

El-Hani C.
Redwood City, CA. 1998) [2] El-Hani C N, Emmeche C.
On some Theoretical Grounds for an Organism-centered Biology: Property Emergence, Supervenience, and Downward Causation: Theory in Biosciences Vol. 119(2000), p. 234-275 [3] Zhou Yue, Jia Xuesong et al.
Unsupervised structural damage classification algorithm based on hierarchical clustering and artificial immune pattern recognition: Journal of Shenyang Jianzhu University (Natural Science) Vol. 119(2013), p. 374-378 [4] Zhang Lixiu, WU Yuhou, et al.
Pazos-Arias et al.

In 2011, Chen et al. identified the nickel’s LSPR (Localized Surface Plasmon Resonance) shifting of near-field (like an oscillator amplitude) and far-field (assumed by energy dissipation of oscillator harmonic).
But, recently, Tymoczko et al. suggest the newest laser ablation method to create Fe-Au core-shell then showed fascinated magnetic and plasmonic properties [16].
This report agreed with Vikash et al. that interband energy noticed in a very small size and have similar energy resonance [22].
Grattana Gold nanorod-based localized surface plasmon resonance biosensors: A review Sensors and Actuators B 195 (2014) 332–351 [13] Qiu, Yongzhi, Tong, Sheng, Zhang, Linlin, Sakurai, Yumiko, Myers, David R, Hong, Lin, Lam, Wilbur A and Bao, Gang 2017 Magnetic forces enable controlled drug delivery by disrupting endothelial cell-cell junctions Nature Communications 8 15594 [14] Jain, Prashant K., Lee, Kyeong Seok, El-Sayed, Ivan H. and El-Sayed, Mostafa A. 2006 Calculated Absorption and Scattering Properties of Gold Nanoparticles of Different Size, Shape, and Composition: Applications in Biological Imaging and Biomedicine Journal of Physical Chemistry B 110 7238–48 [15] Ferry A.

However, the microstructure of Mg-Sn-Al alloys has not been confirmed clearly and the tensile properties were investigated rarely.
The present paper studies the microstructure and tensile properties of as cast, solutioned and aged Mg-5Sn-4Al alloy to develop a new Mg-Sn-Al alloy.
Experimental Commercial pure Mg ingot (99.9 wt.% purity), Al (99.99 wt.% purity) and Sn (99.99 wt.% purity) were used as raw materials to prepare Mg-5wt.
%Sn-4wt.% Al alloy.
Area C is rich in Mg and Al and has lamellar morphology which is confirmed as the secondary precipitation b-Mg17Al12.