Welding Metallurgy Quiz

Master Welding Metallurgy with our Challenging Practice Quiz

Test your knowledge of welding metallurgy and enhance your understanding of weldability, preheat temperature, alloying elements and more with our 10-question multiple choice practice quiz. Answer explanations provided to clarify welding principles and strengthen your metal knowledge.

Questions Summary

  1. Which of the following elements has the highest diffusivity in steel?

a) Carbon
b) Manganese
c) Chromium
d) Molybdenum

  1. Preheat temperature for a carbon steel with 0.2% carbon should be in the range of:

a) 100 – 200°C
b) 200 – 300°C
c) 300 – 400°C
d) Above 400°C

  1. Grain growth in steel during welding is most effectively inhibited by:

a) Manganese
b) Silicon
c) Niobium
d) Chromium

  1. If Cr, Mo and Ni are to be simultaneously used in steel as alloying elements then their content should be in the following proportion:

a) Cr> Mo >Ni
b) Cr = Mo = Ni
c) Cr < Mo > Ni
d) Cr > Mo < Ni

  1. The blacksmith welding is carried out under :

a) Controlled Atmosphere
b) Shielding gas atmosphere
c) Air atmosphere
d) Vacuum

  1. Diffusible hydrogen content should always be kept as low as possible to avoid:

a) Weld porosity
b) Slag inclusions
c) Undercut
d) Cold cracking

  1. To increase the hardenability of ferrous alloys, which of the following elements is mostly used as alloying element:

a) Manganese
b) Silicon
c) Molybdenum
d) Nickel

  1. If the weld metal has the same composition as that of base metal, which of the following properties of the joint is least likely to change after welding:

a) Corrosion resistance
b) Hardness
c) Strength
d) Impact value

  1. If the chromium equivalent of austenitic stainless steel is increased:

a) The corrosion resistance decreases
b) The corrosion resistance increases
c) There is no effect on corrosion resistance
d) The mechanical properties decrease

  1. During multi-pass welding of carbon steel, metals which tend to segregate to the grain boundaries causing embrittlement are:

a) Chromium and Nickel
b) Phosphorus and Sulphur
c) Carbon and Silicon
d) Manganese and Molybdenum

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