Question

Residual stresses can cause any defects in the casting except distortion of the casting component.

(a) True

(b) False

This question was addressed to me during an interview.

I would like to ask this question from Residual Stress in chapter Cooling and Solidification of Casting-Forming-Welding I

Answer 1

Correct answer is (b) False

The explanation is: Residual stresses can be sufficient to cause any defects in the casting. It can split the metal part into two or more pieces abruptly without any application of external load or force. Residual stresses can also result in distortion of the casting component, which cannot regain its original shape easily.