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Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695

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BuyFindarrow_forward

Welding: Principles and Applicatio...

8th Edition
Larry Jeffus
ISBN: 9781305494695
Textbook Problem
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Why must the stress-relieving temperature be kept be-low the critical temperature of the plate?

To determine

To discuss:

The reasons to keep the stress relieving temperature below the critical temperature of the plate.

Explanation

When a metal is cold-worked, residual stresses appears within the metal after the working. These are the stresses which stay within the material after the removal of load. Such stresses are undesirable and needs to be removed.

In order to remove such locked-up stresses, the metal is heated to the temperature known as stress-relieving temperature. When the metal is heated at this high temperature, its yield strength decreases resulting into lowering of residual stresses. Hence, with higher temperature, residual stress will be lower...

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