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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Metallurgical phenomena and their consequences
Metallurgical weldability. Tests
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