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Article | REF: M715 V1

Welding and metallurgical weldability of metals

Author: Guy MURRY

Publication date: January 10, 1994, Review date: April 11, 2017 | Lire en français

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    5. Post-welding actions

    Once a joint has been made, it may be useful to intervene to compensate for deficiencies resulting from the intervention of certain metallurgical phenomena. For example, if necessary :

    • modify the structural state of the metal in the joint and, in particular, refine the grains in the molten metal and in the superheated part of the ZAC;

    • to develop a non-equilibrium structural state, in which case it is an income treatment;

    • to reduce the level of residual stresses, i.e. relaxation;

    • improve the geometry of the connection between the base metal and the molten metal;

    • create residual stresses favorable to the mechanical strength (especially in fatigue) of the joint.

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