Answer:
691K, 543K, 725K, 1473K, 240K, 373K
Explanation:
Creep deformation of any metal is the transformational tendency of a metal to distort rapidly or slowly when attacked by any form of mechanical stress. The temperature significant for a metal to deform is gotten by the division of the actual temperature of the metal by its melting point. This is termed homologous temperature which is 0.4 or higher. It is calculated by the equation:
0.4Tm
Therefore for the listed metals...
For Nickel, 0.4Tm = 0.4 ×(1455 + 273) = 691 K
For Copper, 0.4Tm = 0.4 ×(1085 + 273) = 543 K
For Iron, 0.4Tm = 0.4 ×(1538 + 273) = 725 K
For Tungsten, 0.4Tm = 0.4 ×(3410 + 273) = 1473 K
For Lead, 0.4Tm = 0.4 × (327 + 273) = 240 K
For Aluminium, 0.4Tm = 0.4 ×(660 + 273) = 373 K
