Question

High residual stress is induced during fusion welding if weld metal has

 1. Low yield strength and high ductility

2.  High yield strength and low ductility

 3. High yield strength and high ductility

 4. Low yield strength and high ductility

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Answer 1

Residual stress that exists in welded components is the results from the non-uniform expansion and compressive of the weld and the base material due to the non-uniform heat distribution duringthe welding process. Based on [24], residual stress that exists inweldment is due to the localized heating and rapid cooling.

Answer 2

High residual stress is induced during fusion welding if weld metal has High yield strength and low ductility.

Option: (2)  

Explanation:  

• The strength that is given during the welding of a metal is known as the residual stress.  

• This is dependent on a large number of parameters like Young's modulus, the tensile strength of the substances and the ductility of the material.  

• The more the amount of tensile strength the yield strength or the amount of residual stress is also more.  

• Also if the malleability and ductility of the material is low the tensile strength is high.

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