Q.1
In thermal cycling stage of spheroidised annealing transforms _____ to ______
  • a) austenite to perlite
  • b) cementite to carbide
  • c) cementite from perlite to spheroidal
  • d) cementite from ferrite to spheroidal
Q.2
Spheroidised annealing is used for ______
  • a) medium carbon steel
  • b) hardened alloy steels
  • c) tool steel
  • d) stainless steel
Q.3
In recrystallization annealing process, steel component is heated at the temperature in the range______
  • a) 300⁰C to 400⁰C
  • b) 455⁰C to 540⁰C
  • c) 590⁰C to 660⁰C
  • d) 625⁰C to 675⁰C
Q.4
Recrystallization annealing is applied before _____
  • a) hot working
  • b) cold working
  • c) stress relieving
  • d) full annealing
Q.5
Recrystallization annealing _____
  • a) improves ductility
  • b) improves hardness
  • c) decreases surface strain
  • d) decreases strength
Q.6
In stress relief annealing, steel is heated to a temperature between ______
  • a) 200⁰C to 250⁰C
  • b) 300⁰C to 325⁰C
  • c) 385⁰C to 440⁰C
  • d) 500⁰C to 550⁰C
Q.7
Stress relief annealing _____
  • a) decreases corrosion resistance
  • b) relieves stress at the loss of strength
  • c) improves corrosion resistance
  • d) improves yield strength
Q.8
Stress relief annealing is applicable for _____
  • a) hypoeutectoid steel containing less than 0.4% carbon
  • b) hypoeutectoid steel containing less than 1% carbon
  • c) hypereutectoid steel containing less than 0.4% carbon
  • d) high speed tool steel
Q.9
Spheroidal annealing produces globules of carbide in ferrite.
  • a) True
  • b) False
Q.10
Holding the steel component at just below the lower critical temperature transforms the _____ to globular cementite particles.
  • a) perlite
  • b) austenite
  • c) martensite
  • d) lignite
0 h : 0 m : 1 s