When the temperature of a solid metal increases,
A. Strength of the metal decreases but ductility increases
B. Both strength and ductility of the metal decreases
C. Both strength and ductility of the metal increases
D. Strength of the metal increases but ductility decreases
Answer: Option A
Solution (By Examveda Team)
When the temperature of a solid metal increases, its intramolecular bonds are brake and strength of solid metal decreases. Due to decrease its strength, the elongation of the metal increases, when we apply the load i.e. ductility increasesThis Question Belongs to Mechanical Engineering >> Manufacturing And Production Technology
But I have a doubt, in powder metallurgy we do sintering which is a heat treatment to make the metal more stronger.