1. A polycrystalline cylindrical rod 120 mm long and having a diameter of 10 mm is to be deformed using a tensile load of 30 kN. It must not experience either plastic deformation or a diameter reduction of more than 8 × 10-3 mm. If you were to select among Aluminum, Copper, Nickel, or Titanium alloy, which would be appropriate selections? Yield Strength (МPа) Alloy Tensile Poisson's ratio Elastic Strength (MPa) 270 390 modulus (GPa) 70.8 129.8 Aluminum alloy Copper alloy Nickel alloy Titanium alloy 200 323 400 0.345 0.343 0.312 550 199.5 650 730 0.321 115.7

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