What is the weld boundary?

The weld boundary refers to the defined area around a weld joint where the material properties may be affected by the welding process. This includes regions influenced by heat, such as the heat-affected zone (HAZ), where the microstructure and mechanical properties of the base material can change. Understanding the weld boundary is crucial for assessing weld quality and ensuring structural integrity in welded components. Proper management of this zone helps prevent issues like cracking or reduced strength.