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IMSE 250 Quiz 4 Solved 2024

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  • IMSE 250

IMSE 250 Quiz 4 Solved 2024

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  • October 16, 2024
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  • 2024/2025
  • Exam (elaborations)
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  • IMSE 250
  • IMSE 250
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IMSE 250 Quiz 4 Solved 2024
A "magic wand" to change the hardness of a steel part is ____________. - ANSWER-
(A) Heat Treatment

A steel part is heated to a certain temperature and kept at that temperature for a long
time (say, five hours). It then is cooled down to room temperature at a given rate. You
have all the diagrams for this steel. Which diagram would you use to find out the
structure of this steel at the room temperature? - ANSWER-( C) Continuous-Cooling
Diagram

A steel part is heated to a certain temperature and kept at that temperature for a long
time (say, five hours). You have all the diagrams for this steel. Which diagram would
you use to find out the structure of this steel at that temperature? - ANSWER-(A)
Equilibrium Diagram

Generally speaking, as the carbon content increases, the hardness of the steel will
______. - ANSWER-(A) Increases

Generally speaking, when heat treatment of steel parts, the faster the cooling rate, the
_________ the parts will be after the heat treatment. - ANSWER-(A) Harder

Typically, the hardness of the material is _________ after annealing. - ANSWER-(B)
decreased

Which of the following can achieve greater improvement on the properties for most
steels? - ANSWER-(B) Heat treatment

Which of the following is NOT among the purposes of heat treatment? - ANSWER-(D)
To alter the shape of the part.

Which of the following order represents the hardness order (from hardest to softest) of
the structures? - ANSWER-( C) Martensite>Bainite>Pearlie

Which of the following represents the most common heat treatment processes? -
ANSWER-(A) Hardening

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