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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:
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phenomena due to temperature variations :
melting and processing of the liquid bath,
solidification,
allotropic transformations,
dilatation ;
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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
Bibliography
References
Standardization
French Standards Association (Afnor)
- Soudage et techniques connexes. Fissuration à froid sur implants. Méthode d'essais. - NF A89-100 - 12-1991
- Construction d'ensembles mécanosoudés. Techniques de soudage. Partie 3 : Guide pour le choix des matériaux et pour les dispositions constructives. - FD E83-100-3 - 12-1995
Organizations
Institut de soudure (IS) http://www.isgroupe.com
Office technique pour l'utilisation de l'acier (OTUA) http://www.otua.org
Centre technique des industries mécaniques (Cetim) http://www.cetim.fr
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