Question

In process annealing, the hypo-eutectoid steel is

a.

heated from 30° C to 50° C above the upper critical temperature and then cooled in still air

b.

heated from 30° C to 50° C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

c.

heated from 30° C to 50° C above the upper critical temperature and then cooled slowly in the furnace

d.

heated below or close to the lower critical temperature and then cooled slowly

Posted under Mechanical Engineering

Answer: (d).heated below or close to the lower critical temperature and then cooled slowly

Interact with the Community - Share Your Thoughts

Uncertain About the Answer? Seek Clarification Here.

Understand the Explanation? Include it Here.

Q. In process annealing, the hypo-eutectoid steel is

Similar Questions

Explore Relevant Multiple Choice Questions (MCQs)

Q. Delta-iron occurs between the temperature range of

Q. According to Indian standard specifications, SG 400/15 means

Q. White cast iron has

Q. Iron-carbon alloys containing carbon __________ 4.3% are known as hyper-eutectic cast irons.

Q. Which of the following metal shrinks most from molten state to solid state?

Q. A steel containing ferrite and pearlite is

Q. The defect which takes place due to imperfect packing of atoms during crystallisation is known as

Q. The upper critical point varies according to the carbon content in steel.

Q. A coarse grained steel

Q. Cast iron is a ductile material.

Q. Manganese is added in low carbon steel to

Q. Beryllium bronze contains

Q. The portion of the blast furnace below its widest cross-section is called

Q. Gamma-iron occurs between the temperature range of

Q. Macro-structure of a material is, generally, examined by

Q. Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.

Q. Which of the following property is desirable for materials used in tools and machines?

Q. Babbit metal is a

Q. The metal suitable for bearings subjected to heavy loads, is

Q. The compressive strength of cast iron is __________ that of its tensile strength.

Recommended Subjects

Are you eager to expand your knowledge beyond Mechanical Engineering? We've handpicked a range of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!