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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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    3. Metallurgical phenomena and their consequences

    A brief review of the principles of the various welding processes shows that a certain number of metallurgical phenomena may come into play; their list, taking all processes together, is as follows:

    • phenomena due to temperature variations :

      • melting and processing of the liquid bath,

      • solidification,

      • allotropic transformations,

      • dilatation ;

    • environmental phenomena :

      • action of the atmosphere,

      • pollutant actions ;

    • inclusion phenomena.

    In this section, we take a closer look at these phenomena.

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