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Q: The softest and most ductile form of steel can be obtained by _____________ process.
  • A. annealing
  • B. spheroidizing
  • C. tempering
  • D. normalising
Correct Answer: Option A - Annealing:– One of the most common heat treatments for steel is annealing. Is used soften steel and to improve ductility. In this process the steel is heated into the lower region of the austenite phase field and slowly cooled to room temperature.
A. Annealing:– One of the most common heat treatments for steel is annealing. Is used soften steel and to improve ductility. In this process the steel is heated into the lower region of the austenite phase field and slowly cooled to room temperature.

Explanations:

Annealing:– One of the most common heat treatments for steel is annealing. Is used soften steel and to improve ductility. In this process the steel is heated into the lower region of the austenite phase field and slowly cooled to room temperature.