Question

Which of the following is not a disadvantage of austempering?

(a) Needs to be cold worked

(b) Needs special bath

(c) Can be used for limited steels

(d) Can only be used for small sections

The question was posed to me in semester exam.

I'd like to ask this question from Interrupted Quenching topic in division Heat Treatment of Engineering Material & Metallurgy

Answer 1

Right option is (a) Needs to be cold worked

For explanation: Austempering experiences a number of disadvantages compared to quenching and tempering. It needs a special molten salt bath and can be used only for a limited number of steels. Furthermore, only small sections up to 9 mm thickness can be used.