2. Plastic adaptation of welded joints

2.1 As-welded assembly condition

In the as-welded state, the joint undergoes various modifications that affect it at different levels.

• Geometric :

  • overall, as a result of deformations caused by welding (misalignment of components in particular);

  • locally, due to the presence of a bead (convexity) and its imperfections (gutter, for example).

• Metallurgy: the thermal cycle generates structures (ZF, ZAT) whose constituents behave differently from the base metal or alloy (MB), both chemically (corrosion) and mechanically (behavior law).

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