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Excess of nitrogen in molten casting can cause embrittlement of casting components.

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in Casting-Forming-Welding II by (119k points)
Excess of nitrogen in molten casting can cause embrittlement of casting components.

(a) True

(b) False

I have been asked this question in an online interview.

My doubt is from Methods and Materials for Degassing topic in section Foundry Introduction & Materials of Casting-Forming-Welding II

1 Answer

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Best answer
The correct choice is (a) True

Explanation: During solidification of molten casting in mould cavity, excess of nitrogen is extracted from the melt which can cause blow holes and embrittlement of heat affected zone of casting component. So, it is very necessary to remove nitrogen from the melt to produce castings of desired quality and defects free.

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