Recrystallization is the process in which deformed grains of the crystal structure are replaced by a new set of stress-free grains that nucleate and grow until all the original grains have been consumed. The process is accomplished by heating the material to temperatures above that of crystallization.
2) The temperature at which the new grains are formed in the metal is called
Answer is:
recrystallisation temperature
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
above the recrystallisation temperature
Explanation:
Hot working process metals are plastically deformed above their recrystallization temperature. Being above the recrystallization temperature allows the material to recrystallize during deformation.
Answer is:
all of the above
Explanation:
During hot working of metals the Porosity of the metal is largely eliminated and Grain structure of the metal is refined and Mechanical properties are improved due to refinement of grains.
Answer is:
all of these
Explanation:
During hot working of metals the Porosity of the metal is largely eliminated and Grain structure of the metal is refined and Mechanical properties are improved due to refinement of grains.
Answer is:
hot rolling
Explanation:
Structural shapes that can be made with this metal forming process include I-beams, H-beams, T-beams, U-beams, angle iron, channels, bar stock, and railroad rails.
The most commonly rolled material is structural steel.
it is made by Hot rolling.