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Mechanical Engineering · Q89

Engineering Materials

Engineering and GATE · Mechanical Engineering · question 89

Q89

Process of Austempering results in

A.
Formation of bainite structure
Answer
B.
Carburised structure
C.
Martenistic structure
D.
Lamellar layers of carbide distributed throughout the structure

Answer: Option A

Solution

Answer: Option A
Solution:
Austempering is heat treatment that is applied to ferrous metals, most notably steel and ductile iron.
In steel it produces a bainite microstructure whereas in cast irons it produces a structure of acicular ferrite and high carbon, stabilized austenite known as ausferrite
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