Question

Material science class

Suppose 1 at % of the following elements is added to aluminum (forming a separate alloy with each element) without exceeding the solubility limit. Which one of the following would be expected to give the higher strength alloy. Mn: Ga: Be; or Li? The Atomic and lonic Radii of Selected Elements Valence Element Aluminum Antimony Arsenic Barium Beryllium Bismuth Boron Bromine Cadmium Calcium Carbon Cerium Cesium Chlorine Chromium Cobalt Copper Fluorine Gallum Germanium Atomic Radius (A) 1.432 1.45 115 2.178 1143 1.60 0.46 1.19 149 1978 Ionic Radius (A) 0.51 0.62 2.22 134 0.35 0.7 0.23 198 0.97 0.99 0.16 1034 167 18 0.63 0.72 0.96 133 0.77 184 265 0905 1249 123 1278 1218 SEDES-2233ES DES 053 Gold 1642 Hatnim Hydrogen 0.00 0.78 154 0.81 1570 lodine 220 0.84 Lanthanum 1241 COCCI 1200 FCC 1187 175 1519 1004 Lithium Magnesium Manganese 112 0.00 06 Mercury

Answer 1

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toy eveny element we will determine percentage difference in size. If the difference is more, alloy will give higher strength @ MD-A1 alloy Atomic radius of 1.4B2 Ao Mo. y 1.12 Ao & Aluminium in le. ria 1.124 X2 = 1420 A 2 70d=Tr-m 7x100 of (1.12-1.432 xroo 1-42 % = -21.78 77 % Go-A1 alloy 6 for Ga-A1 alloy - 149 n = 1.432 A

sol.dary-Yo 7 XIDO L72 4der 1.218-1-920 1.432 X 100 = -14.9% ♡ Be-Al alloy Die M-424 - 1432 lod. - (8-) X100 32 (1.143-1432) xoc -1.432 (od: - 2018 15 %. و لي الما ra 1.519 A me 1.4324

374= (Mrxo 2 Xloo 1-19-1422102 1:432 % do 6.0741 % from all the four alloy mentioned above. difference between atmore radil of UGAL brg hest le 6.0 74 %. , bence 4-A1 alloy will give higher strength