3. Write the equality or inequality( , or =) to make the following true (under equivalent conditions) (1 mark each = 10). Example: length of midterm e.g. # 1 2 3 4 5 6 7 8 9 10 APF of Mg Linear packing factor of [111] in Al Bond energy in Al Thermal expansion (CTE) of W Creep strain rate in secondary stage Perpendicular strain in tensile testing Tensile toughness in steel Fatigue limit carburized steel size of interstitial atom # of vacancies at low Temperature b. Pipeline steel in the Arctic ,= 4. For the following applications, what mechanical property would you wish to optimize and what mechanical test would you use to evaluate it? (1 mark each = 8). a. Steel used for a beam in a bridge d. A rotating shaft length of final APF of Al Linear packing factor of [111] in Cu Bond energy in Ni CTE of Au Creep strain rate in primary stage Lateral strain in tensile testing Tensile toughness in SiC Fatigue limit steel size of host (solvent) atom # of vacancies at high Temperature c. A metal radiant tube burner in a high temperature furnace