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Natural aging treatment is a fast and accurate method for reducing residual stresses in the casting compared to the heat treatment.

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Natural aging treatment is a fast and accurate method for reducing residual stresses in the casting compared to the heat treatment.

(a) True

(b) False

The question was asked during an interview for a job.

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

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Right choice is (b) False

The best explanation: In natural aging treatment, generally the casting component is stored for several years to make the residual stress released slowly. This method takes long time and it is only suitable for the production of small-batch and larger casting components. And heat treatment does not take much of time depending on the type of heat treatment.

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